Method and device for transmitting and receiving signals in wireless communication system

Abstract

A method for a terminal to transmit a measurement report in a wireless communication system according to at least one of the examples disclosed in the specification may comprise: receiving positioning assistance information including information about a plurality of positioning reference units (PRUs) from a network; selecting at least one PRU among the plurality of PRUs on the basis of the positioning assistance information; determining at least one reference signal to be measured by the terminal among a plurality of reference signals on the basis of the selection of the at least one PRU; and transmitting a positioning-related measurement report on the basis of the measurement of the at least one determined reference signal.

Description

Method and device for transmitting and receiving signals in a wireless communication system

[0001] This specification relates to a wireless communication system, and more specifically, to a method for transmitting or receiving an uplink / downlink signal and a device therefor.

[0002] Wireless communication systems are widely deployed to provide various types of communication services, such as voice and data. Typically, wireless communication systems are multiple access systems that support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power). Examples of multiple access systems include 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).

[0003] The technical task to be achieved is to provide a method and a device for transmitting or receiving signals more accurately and efficiently in a wireless communication system.

[0004] The technical task to be achieved is not limited to this, and other technical tasks can be inferred from the disclosed embodiments.

[0005] A method for a terminal to transmit a measurement report in a wireless communication system according to one aspect may include receiving positioning assistance information including information on a plurality of positioning reference units (PRUs) from a network; selecting at least one PRU among the plurality of PRUs based on the positioning assistance information; determining at least one reference signal to be measured by the terminal among a plurality of reference signals based on the selection of the at least one PRU; and transmitting a positioning-related measurement report based on measurement of the determined at least one reference signal.

[0006] Each of the at least one reference signal measured at the terminal may be identical to a reference signal measured at each PRU selected by the terminal.

[0007] The terminal and each PRU selected by the terminal can each measure at least one reference signal in the same time resource.

[0008] The information about the plurality of PRUs may include at least one of resource information about each reference signal measured in each PRU or information about measurement timing of each PRU.

[0009] The at least one PRU may be selected based on PRU location information.

[0010] The information about the plurality of PRUs may include PRU location information.

[0011] The above PRU location information can be obtained through wireless sensing for ISAC (integrated sensing and communication).

[0012] The validity of the positioning assistance information may be determined based on at least one of the terminal's measurements or timers for the at least one reference signal.

[0013] The measurement of the terminal for the at least one reference signal may include a reference signal carrier phase measurement.

[0014] According to another aspect, a processor-readable recording medium having recorded thereon a program for performing the above-described method may be provided.

[0015] According to another aspect, a device for wireless communication includes a memory storing instructions; and a processor operating by executing the instructions, wherein the operation of the processor may include receiving positioning assistance information including information on a plurality of positioning reference units (PRUs) from a network; selecting at least one PRU among the plurality of PRUs based on the positioning assistance information; determining at least one reference signal to be measured by the device among a plurality of reference signals based on the selection of the at least one PRU; and transmitting a positioning-related measurement report based on a measurement of the determined at least one reference signal.

[0016] The above device may further include a transmitter and receiver.

[0017] The above device may be a terminal operating in a wireless communication system.

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

[0019] In another aspect, a method for a network node to receive a measurement report in a wireless communication system may include transmitting positioning assistance information including information about a plurality of positioning reference units (PRUs) to a terminal; receiving a measurement report of the terminal for at least one of a plurality of reference signals measured by the plurality of PRUs; selecting at least one PRU among the plurality of PRUs that measures the same reference signal as measured by the terminal based on the measurement report of the terminal; and determining a position of the terminal based on the measurement report of the terminal and the measurement report of the at least one selected PRU.

[0020] In another aspect, a network node configured to operate in a wireless communication system comprises at least one memory storing instructions; and at least one processor operable by executing the instructions, wherein the operation of the at least one processor may include transmitting positioning assistance information including information about a plurality of positioning reference units (PRUs) to a terminal; receiving a measurement report of the terminal for at least one of a plurality of reference signals measured by the plurality of PRUs; selecting at least one PRU among the plurality of PRUs that measures the same reference signal as measured by the terminal based on the measurement report of the terminal; and determining a location of the terminal based on the measurement report of the terminal and the measurement report of the at least one selected PRU.

[0021] According to one embodiment, signals can be transmitted or received more accurately and efficiently in a wireless communication system.

[0022] The technical effects are not limited thereto and other technical effects can be inferred from the disclosed embodiments.

[0023] Figure 1 illustrates physical channels used in a 3GPP system, which is an example of a wireless communication system, and a general signal transmission method using the channels.

[0024] Figure 2 illustrates the structure of a radio frame.

[0025] Figure 3 illustrates a resource grid of slots.

[0026] Figure 4 illustrates an example of physical channels being mapped within a slot.

[0027] Figure 5 illustrates the PDSCH reception and ACK / NACK transmission process.

[0028] Figure 6 illustrates a PUSCH transmission process.

[0029] Figure 7 is a diagram showing an example of positioning protocol settings.

[0030] Figure 8 is a diagram showing an example of OTDOA.

[0031] Figure 9 is a diagram showing an example of Multi RTT.

[0032] Figure 10 illustrates a procedure for operation of a network node (e.g., upper node of a terminal, LMF, etc.) according to one embodiment.

[0033] Figure 11 illustrates the procedure of terminal operation for performing positioning measurement.

[0034] Figure 12 illustrates various ISAC environments.

[0035] Figure 13 illustrates an example of a single differential method for DL ​​PRS.

[0036] Figure 14 illustrates an example of a double-difference method for DL ​​PRS.

[0037] FIG. 15 is a diagram for explaining a terminal positioning related procedure according to one embodiment.

[0038] Fig. 16 illustrates a flowchart of a method for transmitting a measurement report of a terminal according to one embodiment.

[0039] Fig. 17 illustrates a flowchart of a method for receiving a measurement report of a network node according to one embodiment.

[0040] Figures 18 to 21 illustrate a communication system (1) and a wireless device applicable to the present disclosure.

[0041] The following technologies can be used in various wireless access systems, such as CDMA (code division multiple access), FDMA (frequency division multiple access), TDMA (time division multiple access), OFDMA (orthogonal frequency division multiple access), and SC-FDMA (single carrier frequency division multiple access). CDMA can be implemented with radio technologies such as UTRA (Universal Terrestrial Radio Access) or CDMA2000. TDMA can be implemented with radio technologies such as GSM (Global System for Mobile communications) / GPRS (General Packet Radio Service) / EDGE (Enhanced Data Rates for GSM Evolution). OFDMA can be implemented with radio technologies such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, and E-UTRA (Evolved UTRA). UTRA is a part of UMTS (Universal Mobile Telecommunications System). 3GPP (3rd Generation Partnership Project) LTE (long term evolution) is part of E-UMTS (Evolved UMTS) that uses E-UTRA, and LTE-A (Advanced) 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.

[0042] As more and more communication devices demand greater communication capacity, the need for improved mobile broadband communication compared to existing RAT (Radio Access Technology) is emerging. Furthermore, massive MTC (Machine Type Communications), which connects multiple devices and objects to provide various services anytime, anywhere, is also a key issue to be considered in next-generation communication. Furthermore, communication system design that considers reliability and latency-sensitive services / terminals is being discussed. Accordingly, the introduction of next-generation RATs that consider enhanced Mobile BroadBand Communication (eMBB), massive MTC, and Ultra-Reliable and Low Latency Communication (URLLC) is being discussed. In one embodiment of the present invention, for convenience, the corresponding technology is referred to as NR (New Radio or New RAT).

[0043] The term 'base station' used in this specification may be replaced with terms such as fixed station, Node B, gNode B (gNB), Access Point (AP), cell, or transmission and reception point (TRP). The term 'relay node' may be replaced with terms such as Relay Node (RN) or Relay Station. In addition, the term 'terminal' may be replaced with terms such as User Equipment (UE), Mobile Station (MS), Mobile Subscriber Station (MSS), or Subscriber Station (SS).

[0044] For clarity of explanation, the description will focus on 3GPP NR, but the technical idea of ​​the present invention is not limited thereto.

[0045] The following documents may be referenced for background information, definitions of terms, abbreviations, etc. related to the present invention (Incorporated by Reference).

[0046] - 38.211: Physical channels and modulation

[0047] - 38.212: Multiplexing and channel coding

[0048] - 38.213: Physical layer procedures for control

[0049] - 38.214: Physical layer procedures for data

[0050] - 38.215: Physical layer measurements

[0051] - 38.300: NR and NG-RAN Overall Description

[0052] - 38.304: User Equipment (UE) procedures in idle mode and in RRC Inactive state

[0053] - 38.321Medium Access Control (MAC) protocol specification

[0054] - 38.331: Radio Resource Control (RRC) protocol specification

[0055] - 37.213: Introduction of channel access procedures to unlicensed spectrum for NR-based access

[0056] - 36.355: LTE Positioning Protocol

[0057] - 37.355: LTE Positioning Protocol

[0058] 용어 및 약어

[0059] - 5GC: 5G Core Network

[0060] - 5GS: 5G System

[0061] - AoA: Angle of Arrival

[0062] - AP: Access Point

[0063] - CID: Cell ID

[0064] - E-CID: Enhanced Cell ID

[0065] - GNSS: Global Navigation Satellite System

[0066] - GPS: Global Positioning System

[0067] - LCS: LoCation Service

[0068] - LMF: Location Management Function

[0069] - LPP: LTE Positioning Protocol

[0070] - MO-LR: Mobile Originated Location Request

[0071] - MT-LR: Mobile Terminated Location Request

[0072] - NRPPa: NR Positioning Protocol A

[0073] - OTDOA: Observed Time Difference Of Arrival

[0074] - PDU: Protocol Data Unit

[0075] - PRS: Positioning Reference Signal

[0076] - RRM: Radio Resource Management

[0077] - RSSI: Received Signal Strength Indicator

[0078] - RSTD: Reference Signal Time Difference

[0079] - ToA: Time of Arrival

[0080] - TP: Transmission Point

[0081] - TRP: Transmission and Reception Point

[0082] - UE: User Equipment

[0083] - SS: Search Space

[0084] - CSS: Common Search Space

[0085] - USS: UE-specific Search Space

[0086] - PDCCH: Physical Downlink Control Channel

[0087] - PDSCH: Physical Downlink Shared Channel;

[0088] - PUCCH: Physical Uplink Control Channel;

[0089] - PUSCH: Physical Uplink Shared Channel;

[0090] - DCI: Downlink Control Information

[0091] - UCI: Uplink Control Information

[0092] - SI: System Information

[0093] - SIB: System Information Block

[0094] - MIB: Master Information Block

[0095] - RRC: Radio Resource Control

[0096] - DRX: Discontinuous Reception

[0097] - RNTI: Radio Network Temporary Identifier

[0098] - CSI: Channel state information

[0099] - PCell: Primary Cell

[0100] - SCell: Secondary Cell

[0101] - PSCell: Primary SCG(Secondary Cell Group) Cell

[0102] - CA: Carrier Aggregation

[0103] - WUS: Wake up Signal

[0104] - TX: Transmitter

[0105] - RX: Receiver

[0106] - RSTD: Reference Signal Time Difference

[0107] - RS: Reference Signal

[0108] - PRS: Positioning Reference Signal

[0109] - SRS: Sounding Reference Signal

[0110] In a wireless communication system, a terminal receives information from a base station via the downlink (DL) and transmits it to the base station via the uplink (UL). The information transmitted and received between the base station and the terminal includes data and various control information, and various physical channels exist depending on the type and purpose of the information being transmitted and received.

[0111] Figure 1 is a drawing for explaining physical channels used in a 3GPP NR system and a general signal transmission method using them.

[0112] When a terminal is powered on again from a powered-off state or enters a new cell, it performs an initial cell search operation, such as synchronizing with the base station, in step S101. To this end, the terminal receives a Synchronization Signal Block (SSB) from the base station. The SSB includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). The terminal synchronizes with the base station based on the PSS / SSS and obtains information such as a cell ID. In addition, the terminal can obtain broadcast information within the cell based on the PBCH. Meanwhile, the terminal can check the downlink channel status by receiving a Downlink Reference Signal (DL RS) during the initial cell search phase.

[0113] After completing the initial cell search, the terminal can obtain more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) based on the physical downlink control channel information in step S102.

[0114] Thereafter, the terminal may perform a random access procedure such as steps S103 to S106 to complete connection to the base station. To this end, the terminal may transmit a preamble through a physical random access channel (PRACH) (S103) and receive a response message to the preamble through a physical downlink control channel and a corresponding physical downlink shared channel (S104). In the case of contention-based random access, a contention resolution procedure such as transmission of an additional physical random access channel (S105) and reception of a physical downlink control channel and a corresponding physical downlink shared channel (S106) may be performed.

[0115] The terminal that has performed the procedure as described above can then perform the general uplink / downlink signal transmission procedure, such as receiving a physical downlink control channel / physical downlink shared channel (S107) and transmitting a physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) (S108). The control information that the terminal transmits to the base station is collectively referred to as uplink control information (UCI). UCI includes HARQ ACK / NACK (Hybrid Automatic Repeat and reQuest Acknowledgement / Negative-ACK), SR (Scheduling Request), CSI (Channel State Information), etc. CSI includes CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), RI (Rank Indication), etc. UCI is generally transmitted through PUCCH, but can be transmitted through PUSCH when control information and traffic data must be transmitted simultaneously. Additionally, UCI can be transmitted aperiodically via PUSCH upon request / instruction from the network.

[0116] Figure 2 illustrates the structure of a radio frame. In NR, uplink and downlink transmissions are organized into frames. Each radio frame is 10 ms long and is divided into two 5 ms half-frames (HF). Each half-frame is divided into five 1 ms sub-frames (SF). A sub-frame is divided into one or more slots, and the number of slots within a sub-frame depends on the subcarrier spacing (SCS). Each slot contains 12 or 14 OFDM (Orthogonal Frequency Division Multiplexing) symbols, depending on the cyclic prefix (CP). When a normal CP is used, each slot contains 14 OFDM symbols. When an extended CP is used, each slot contains 12 OFDM symbols.

[0117] Table 1 illustrates that when CP is normally used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS.

[0118] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 15KHz (u=0)1410130KHz (u=1)1420260KHz (u=2)14404120KHz (u=3)14808240KHz (u=4)1416016

[0119] * N slot symb : Number of symbols in the slot

[0120] * N frame,u slot : Number of slots in the frame

[0121] * N subframe,u slot : Number of slots in a subframe

[0122] Table 2 illustrates that when extended CP is used, the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary depending on the SCS.

[0123] SCS (15*2 u )N slot symb N frame,u slot N subframe,u slot 60KHz (u=2)12404

[0124] The structure of the frame is only an example, and the number of subframes, number of slots, and number of symbols in the frame can be varied.

[0125] In an NR system, OFDM numerology (e.g., SCS) may be set differently between multiple cells that are merged into a single terminal. Accordingly, the (absolute time) interval of a time resource (e.g., SF, slot, or TTI) (conveniently referred to as TU (Time Unit)) consisting of the same number of symbols may be set differently between the merged cells. Here, the symbol may include an OFDM symbol (or CP-OFDM symbol), an SC-FDMA symbol (or Discrete Fourier Transform-spread-OFDM, DFT-s-OFDM symbol).

[0126] Figure 3 illustrates a resource grid of a slot. A slot includes multiple symbols in the time domain. For example, in the case of a regular CP, one slot includes 14 symbols, but in the case of an extended CP, one slot includes 12 symbols. A carrier includes multiple subcarriers in the frequency domain. A Resource Block (RB) is defined as multiple (e.g., 12) consecutive subcarriers in the frequency domain. A Bandwidth Part (BWP) is defined as multiple consecutive Physical RBs (PRBs) in the frequency domain and can correspond to a single numerology (e.g., SCS, CP length, etc.). A carrier can include up to N (e.g., 5) BWPs. Data communication is performed through activated BWPs, and only one BWP can be activated for a single terminal. Each element in the resource grid is referred to as a Resource Element (RE), to which one complex symbol can be mapped.

[0127] Figure 4 illustrates an example of mapping physical channels within a slot. In an NR system, a frame is characterized by a self-contained structure in which a DL control channel, DL or UL data, and a UL control channel can all be included within a single slot. For example, the first N symbols within a slot can be used to transmit a DL control channel (e.g., PDCCH) (hereinafter, DL control region), and the last M symbols within a slot can be used to transmit a UL control channel (e.g., PUCCH) (hereinafter, UL control region). N and M are each integers greater than or equal to 0. A resource region (hereinafter, data region) between the DL control region and the UL control region can be used to transmit DL data (e.g., PDSCH) or UL data (e.g., PUSCH). GP provides a time gap when a base station and a terminal switch from a transmission mode to a reception mode or from a reception mode to a transmission mode. Some symbols at the time of switching from DL to UL within a subframe can be set as GP.

[0128] The PDCCH carries Downlink Control Information (DCI). For example, the PCCCH (i.e., DCI) carries the transmission format and resource allocation of the downlink shared channel (DL-SCH), resource allocation information for the uplink shared channel (UL-SCH), paging information for the paging channel (PCH), system information on the DL-SCH, resource allocation information for upper layer control messages such as random access responses transmitted on the PDSCH, transmission power control commands, activation / deactivation of Configured Scheduling (CS), etc. The DCI includes a cyclic redundancy check (CRC), which is masked / scrambled with various identifiers (e.g., Radio Network Temporary Identifier, RNTI) depending on the owner or usage of the PDCCH. For example, if the PDCCH is for a specific terminal, the CRC is masked with a terminal identifier (e.g., Cell-RNTI, C-RNTI). If the PDCCH is for paging, the CRC is masked with the Paging-RNTI (P-RNTI). If the PDCCH is for system information (e.g., a System Information Block, SIB), the CRC is masked with the System Information RNTI (SI-RNTI). If the PDCCH is for a random access response, the CRC is masked with the Random Access-RNTI (RA-RNTI).

[0129] Fig. 5 illustrates a PDSCH reception and ACK / NACK transmission process. Referring to Fig. 5, a UE can detect a PDCCH in slot #n. Here, the PDCCH includes downlink scheduling information (e.g., DCI format 1_0, 1_1), and indicates a DL assignment-to-PDSCH offset (K0) and a PDSCH-HARQ-ACK reporting offset (K1). The UE receives a PDSCH from slot #(n+K0) according to the scheduling information of slot #n, and then, when reception of the PDSCH is completed in slot #n1 (where, n+K0≤n1), the UE can transmit a UCI through a PUCCH in slot #(n1+K1). Here, the UCI can include a HARQ-ACK response to the PDSCH. If the PDSCH is configured to transmit up to 1 TB, the HARQ-ACK response can be configured with 1 bit. When a PDSCH is configured to transmit up to 2 TB, the HARQ-ACK response may consist of 2 bits if spatial bundling is not configured, and may consist of 1 bit if spatial bundling is configured. When the HARQ-ACK transmission timing for multiple PDSCHs is designated as slot #(n+K1), the UCI transmitted in slot #(n+K1) includes HARQ-ACK responses for multiple PDSCHs.

[0130] Figure 6 illustrates a PUSCH transmission process. Referring to Figure 6, a terminal can detect a PDCCH in slot #n. Here, the PDCCH includes uplink scheduling information (e.g., DCI formats 0_0, 0_1). The terminal can transmit a PUSCH in slot #(n+K2) according to the scheduling information in slot #n. Here, the PUSCH includes an UL-SCH TB.

[0131] Positioning

[0132] Positioning can refer to determining the geographic location and / or velocity of a user equipment (UE) by measuring wireless signals. Location information can be requested by a client (e.g., an application) associated with the UE and reported to the client. Furthermore, the location information may be contained within a core network or requested by a client connected to the core network. The location information may be reported in a standard format, such as cell-based or geographic coordinates, and may also include an estimated error value for the UE's location and velocity and / or the positioning method used for positioning.

[0133] Figure 7 is a diagram showing an example of a positioning protocol configuration for measuring the position of a terminal.

[0134] Referring to FIG. 7, LPP can be used as a point-to-point between a location server (E-SMLC and / or SLP and / or LMF) and a target device to position the target device (UE and / or SET) using position-related measurements obtained from one or more reference sources. Through LPP, the target device and the location server can exchange measurement and / or location information based on signal A and / or signal B.

[0135] NRPPa can be used to exchange information between a reference source (ACCESS NODE and / or BS and / or TP and / or NG-RAN node) and a location server.

[0136] The functions provided by the NRPPa protocol may include:

[0137] - E-CID Location Information Transfer. This function allows location information to be exchanged between the reference source and the LMF for E-CID positioning purposes.

[0138] - OTDOA Information Transfer. This function allows information to be exchanged between the reference source and the LMF for OTDOA positioning purposes.

[0139] - Reporting of General Error Situations. This feature allows reporting of general error situations for which no function-specific error message is defined.

[0140] The positioning methods supported by NG-RAN may include GNSS (Global Navigation Satellite System), OTDOA, E-CID (enhanced cell ID), barometric positioning, WLAN positioning, Bluetooth positioning, terrestrial beacon system (TBS), and UTDOA (Uplink Time Difference of Arrival). Among the above positioning methods, the position of the UE may be measured using any one of the positioning methods, but the position of the UE may also be measured using two or more positioning methods.

[0141] OTDOA (Observed Time Difference Of Arrival)

[0142] Figure 8 is a diagram showing an example of an OTDOA (observed time difference of arrival) positioning method.

[0143] The OTDOA positioning method utilizes the timing measurements of downlink signals received by the UE from multiple TPs, including the eNB, ng-eNB, and PRS-dedicated TPs. The UE measures the timing of the received downlink signals using location assistance data received from a location server. Based on these measurement results and the geographic coordinates of neighboring TPs, the UE's location can be determined.

[0144] A UE connected to a gNB can request a measurement gap for OTDOA measurements from a TP. If the UE does not recognize the SFN for at least one TP in the OTDOA assistance data, the UE can use an autonomous gap to obtain the SFN of the OTDOA reference cell before requesting a measurement gap to perform Reference Signal Time Difference (RSTD) measurements.

[0145] Here, the RSTD can be defined based on the smallest relative time difference between the boundaries of two subframes received from the reference cell and the measurement cell, respectively. That is, it can be calculated based on the relative time difference between the start time of the subframe of the reference cell that is closest to the start time of the subframe received from the measurement cell. Meanwhile, the reference cell can be selected by the UE.

[0146] Accurate OTDOA measurement requires measuring the time of arrival (TOA) of signals received from three or more geographically dispersed TPs or base stations. For example, the TOA for TP 1, TP 2, and TP 3 can be measured, and based on the three TOAs, the RSTD for TP 1-TP 2, the RSTD for TP 2-TP 3, and the RSTD for TP 3-TP 1 can be calculated. Based on these TOAs, a geometric hyperbola can be determined, and the point where these hyperbolas intersect can be used to estimate the UE's location. Since each TOA measurement may have inaccuracies and / or uncertainties, the estimated UE's location can be known within a certain range depending on the measurement uncertainty.

[0147] For example, the RSTD for two TPs can be calculated based on Equation 1.

[0148]

[0149] c is the speed of light, and {x t , y t} are the (unknown) coordinates of the target UE, and {x i , y i} are the coordinates of the (known) TP, and {x1, y1} can be the coordinates of the reference TP (or another TP). Here, (T i -T1) is the transmission time offset between two TPs, which can be called "Real Time Differences" (RTDs), and n i , n1 can represent a value related to the UE TOA measurement error.

[0150] E-CID (Enhanced Cell ID)

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

[0152] Meanwhile, the E-CID positioning method may utilize additional UE measurements and / or NG-RAN radio resources in addition to the CID positioning method to improve the UE position estimate. In the E-CID positioning method, some of the same measurement methods as the measurement control system of the RRC protocol may be used, but generally, additional measurements are not performed solely for UE position measurement. In other words, a separate measurement configuration or measurement control message may not be provided to measure the UE's position, and the UE may not expect to be requested to perform additional measurement operations solely for position measurement, and may report measurement values ​​obtained through measurement methods that the UE can generally measure.

[0153] For example, a serving gNB can implement an E-CID positioning method using E-UTRA measurements provided from the UE.

[0154] Examples of measurement elements that can be used for E-CID positioning include:

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

[0156] - E-UTRAN measurements: ng-eNB Rx-Tx Time difference, Timing Advance (T ADV ), Angle of Arrival (AoA)

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

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

[0159] T ADV Type 2 = ng-eNB receive-transmit time difference

[0160] Meanwhile, AoA can be used to measure the direction of a UE. AoA can be defined as an estimated angle relative to the UE's position in a counterclockwise direction from a base station / TP. In this case, the geographical reference direction may be north. The base station / TP can use uplink signals such as a Sounding Reference Signal (SRS) and / or a Demodulation Reference Signal (DMRS) for AoA measurement. In addition, the larger the antenna array array, the higher the AoA measurement accuracy. When antenna arrays are arranged at equal intervals, signals received from adjacent antenna elements can have a constant phase shift (phase-rotate).

[0161] UTDOA (Uplink Time Difference of Arrival)

[0162] UTDOA is a method for determining the location of a UE by estimating the arrival time of the SRS. When calculating the estimated SRS arrival time, the serving cell is used as a reference cell, and the UE's location can be estimated through the arrival time difference with other cells (or base stations / TPs). To implement UTDOA, the E-SMLC can indicate the target UE's serving cell to instruct the target UE to transmit SRS. In addition, the E-SMLC can provide configuration settings such as whether the SRS is periodic or aperiodic, bandwidth, and frequency / group / sequence hopping.

[0163] Multi RTT (round trip time)

[0164] Figure 9 is a diagram showing an example of a Multi RTT (round trip time) positioning method.

[0165] Referring to Fig. 9 (a), an RTT process is illustrated in which a TOA measurement is performed by an initiating device and a responding device, and the responding device provides the TOA measurement to the initiating device for RTT measurement (calculation). For example, the initiating device may be a TRP and / or a terminal, and the responding device may be a terminal and / or a TRP.

[0166] The initiating device transmits an RTT measurement request, and the responding device can receive it (1301).

[0167] The initiating device can transmit the RTT measurement signal at t0, and the responding device can obtain the TOA measurement t1 (1303).

[0168] The responding device can transmit the RTT measurement signal at t2, and the initiating device can obtain the TOA measurement t3 (1305).

[0169] The responding device can transmit information about [t2-t1], and the initiating device can receive the information and calculate the RTT based on Equation 2 (1307). The information can be transmitted and received based on a separate signal, or can be transmitted and received by being included in the RTT measurement signal (1305).

[0170]

[0171] Referring to Fig. 9 (b), the RTT can correspond to a double-range measurement between two devices. Positioning estimation can be performed from the information. Based on the measured RTT, d1, d2, and d3 can be determined, and the target device location can be determined as the intersection of a circle centered at each of BS1, BS2, and BS3 (or TRP) and having each of d1, d2, and d3 as a radius.

[0172] NG-RAN positioning architecture and procedures

[0173] Figure 10 illustrates the positioning structure of a next generation (NG) radio access network (RAN). The NR RAN may be referred to as an NR RAN or a 5G RAN.

[0174] The AMF may receive a request for some location services related to a particular target UE from another entity (e.g., a GMLC or a UE), or the AMF itself may decide to initiate some location services on behalf of a particular target UE (e.g., in case of an IMS emergency call). The AMF may then send a location service request to the LMF. The LMF may process the location service request, which may include sending assistance data to the target UE for UE-based and / or UE-assisted positioning and / or positioning the target UE. The LMF sends the location service result (e.g., a position estimate for the UE) to the AMF. If the location service is requested by an entity other than the AMF (e.g., a GMLC or a UE), the AMF sends the location service result to that entity.

[0175] NG-RAN nodes can control TRPs / TPs such as RRM or DL-PRS only TPs to support PRS-based TBS.

[0176] LMF can be connected to E-SMLC to access UTRAN information.

[0177] LMF can be connected to SLP, which is responsible for positioning with respect to the user plane.

[0178] Figure 11 illustrates an example of location services supported by NG-RAN.

[0179] When the AMF receives a Location Service Request while the UE is in CM-IDLE state, the AMF performs a network triggered service request to establish signaling for connection with the UE and allocation of a specific serving gNB / ng-eNB. In Figure 11, it is assumed that the UE is in connected mode.

[0180] A location service request for the UE may be triggered, and the location service request for the UE may be any one of 1101, 1102 or 1103. For example, an entity of 5GC (e.g. GMLC) may request some location service (e.g. positioning) for the target UE to the serving AMF (1101), or the serving AMF may itself trigger some location service (e.g. to locate the UE for an emergency call) for the target UE (1102), or the UE may request some location service (e.g. positioning or assistance data forwarding) to the serving AMF at the NAS level (1103).

[0181] AMF forwards the location service request to LMF (1104).

[0182] LMF provides services in NG-RAN to obtain location measurement or assistance data and initiates a positioning procedure with a nearby ng-eNB / gNB (1105).

[0183] (Instead of or in addition to step 1105) the LMF initiates a positioning procedure with the UE to obtain a position estimate or positioning measurement or to transmit position assistance data to the UE (1106).

[0184] The LMF provides a location service response to the AMF (1107) (e.g., success or failure indication and a position estimate for the UE if requested and obtained).

[0185] (For 1101) AMF provides a location service response to the 5GC entity (1108) (e.g., location estimation for the UE).

[0186] (For 1102), AMF uses the location service response received in step 1107 to support the service triggered in step 1102 (1109) (e.g., providing location estimates related to emergency calls to GMLC).

[0187] (For 1103) AMF provides a location service response to the UE (1110) (e.g., location estimation for the UE).

[0188] ISAC (Integrated Sensing And Communication)

[0189] Recently, various methods for utilizing wireless sensing in wireless communication systems are being discussed. While utilizing existing radar technology for wireless sensing purposes can be considered, radar technology is specialized for sensing and does not consider communication characteristics. Furthermore, transmitting and receiving nodes require separate devices to transmit and receive signals for wireless sensing purposes, which can pose limitations. To address these issues, methods for utilizing wireless sensing in wireless communication systems that support communication using cellular networks, such as 5G and / or next-generation 6G (e.g., ISAC or JCAS (Joint Communication And Sensing)) are being actively studied.

[0190] 3GPP standardization has begun a study on supporting ISAC in 5G / 6G. In TR 22.837 document published by 3GPP SA1 WG, wireless sensing is defined as a technology that uses radio waves to measure distance, angle, or instantaneous velocity to obtain information about the characteristics of the environment and / or surrounding objects. At this time, a scenario in which sensing and communication share the same frequency band and hardware is being considered, and the radio wave for sensing can share / reuse the radio wave for communication purposes (e.g., use of reference signals for communication purposes (e.g., SSB, DMRS, CSI-RS and / or SRS)) or design a separate radio wave for wireless sensing purposes.

[0191] Generally, wireless sensing supported by ISAC can be considered to be performed through a process in which a signal transmitted from a transmitter is reflected by a target object and received by a receiver, and a sensing mode for a scenario that is distinguished depending on the relationship between the transmitter and receiver can be defined. Based on whether the transmitter and receiver are identical, a case in which the transmitter and receiver are the same can be defined as a mono-static sensing mode, and a case in which the transmitter and receiver are different can be defined as a bi-static sensing mode.

[0192] Figure 12 illustrates examples of wireless sensing modes supported by ISAC.

[0193] Referring to Figure 12, when considering the transmission and reception operations and the nodes participating in them in the 3GPP standard, the sensing mode can be broadly classified as follows.

[0194] (a) BS mono-static sensing mode: BS that transmits radio waves receives the reflected signal.

[0195] (b) BS-to-BS bi-static sensing mode: A BS receives the reflected signal of a radio wave transmitted by another BS.

[0196] (c) BS-to-UE bi-static sensing mode: UE receives the signal reflected from the radio wave transmitted by BS.

[0197] (d) BS mono-static sensing mode: UE that transmits radio wave receives reflected signal

[0198] (e) UE-to-UE bi-static sensing mode: A UE receives the reflected signal of a radio wave transmitted by a specific transmitting UE.

[0199] (f) UE-to-BS bi-static sensing mode: BS receives the reflected signal of the radio wave transmitted by the transmitting UE.

[0200] However, in addition to the six use cases mentioned above, a sensing mode that includes multiple transmitting / receiving nodes can be referred to using the term multi-static sensing mode.

[0201] Wireless sensing via ISAC / JCAS is being considered for various scenarios. Generally, wireless sensing is intended to obtain information about a target without (or regardless of) a communication module. The scenarios considered can be broadly categorized into three categories.

[0202] (1) Object detection and tracking: A scenario for detecting target objects or people or tracking location information. Representative scenarios that can be considered include intruder detection in indoor / outdoor situations, location tracking of UAVs or AGVs, and autonomous driving support.

[0203] (2) Environment monitoring: A scenario for the purpose of collecting information about the environment around the transmitting / receiving node. Representative scenarios that can be considered include rainfall information observation and flood detection scenarios.

[0204] (3) Motion monitoring: A scenario for detecting the motion of a target, such as a scenario for distinguishing human motion or gestures, can be considered as a representative example.

[0205] The performance metrics and levels required for each of the above scenarios vary and may differ from one another. To design an ISAC / JCAS suitable for the service quality required for each scenario, various key performance requirements must be considered. TS 22.137 of the 3GPP standard defines the following key performance requirements for each service scenario: positioning estimation accuracy, velocity estimation accuracy, confidence level, sensing resolution, missed detection probability, false alarm probability, sensing service maximum delay, and refreshing rate. The required levels for each key performance requirement may vary depending on the service scenario.

[0206]

[0207]

[0208] The suggestions discussed below can also be applied to the ISAC environment described above.

[0209] DL RSPD measurements related to CPP

[0210] In NR, various techniques can be used to perform positioning, and as described above, timing-based methods (e.g., DL-TDOA, UL-RTOA, Multi RTT), angle-based methods (e.g., AoA, AoD), and cell ID-based methods (e.g., E-CID) can be used.

[0211] Additionally, the introduction of Carrier Phase Measurement (CPM)-based Positioning (CPP) is being discussed in Rel-18. CPP allows phase measurement to be performed / utilized based on the carrier frequency of the received signal to measure the propagation delay of a reference signal caused by the distance between the base station and the terminal.

[0212] Positioning-related actions based on neighboring PRU information

[0213] The suggestions discussed below can also be applied to the ISAC environment described above. For example, ISAC's wireless sensing techniques can be used to select / discover adjacent PRUs.

[0214] In 3GPP NR, various techniques can be used to perform positioning, including timing-based methods (e.g., DL-TDOA, UL-RTOA, Multi RTT), angle-based methods (e.g., AoA, AoD), and cell ID-based methods (e.g., E-CID) as described above.

[0215] Additionally, the introduction of Carrier Phase Measurement (CPM)-based Positioning (CPP) is being discussed in Rel-18. CPP allows phase measurement to be performed / utilized based on the carrier frequency of the received signal to measure the propagation delay of a reference signal caused by the distance between the base station and the terminal.

[0216] CPP considers a positioning method that utilizes phase measurement on a carrier frequency. Given that high-frequency carrier frequencies are typically used, distance information measured through phase measurement can be very precise. For example, if a 3 GHz carrier frequency is used for transmission and reception of a reference signal, the length of one wavelength, where the phase changes from 0 to 2π, has a value of approximately 9.99 cm, so the accuracy of distance that can be distinguished through phase can be on the cm level. However, to ensure such precise positioning, it is necessary to consider the effects of phase error that can affect phase measurement. The occurrence of phase error can have various causes, including the implementation precision of the transceiver, instantaneous errors in hardware components, channel conditions such as the mobility of the transceiver and multipath environment, and inaccurate prior information. Such phase error can affect the measurement results of phase measurement and significantly reduce positioning accuracy.

[0217] To improve the positioning accuracy of CPP by attenuating / cancelling the effects of phase error, a differencing / differential method can be used that utilizes the differences between multiple received measurements. The differencing method can include a single differencing / differential method and a double differencing / differential method. The simpler single differencing method can be applied in two cases: i) when multiple receiving nodes receive a signal transmitted by one transmitting node, and ii) when one receiving node receives multiple signals transmitted by multiple transmitting nodes. As an example of i), two phase measurements affected by phase error can be considered as follows.

[0218]

[0219] In mathematical expression 3, Φ i k means the phase measurement on the kth subcarrier of the signal received by the ith node, and Φ i tx Wow Φ i rx represents the effect of the initial phase error on the signal received by the i-th node, respectively. f c and Δf represent the carrier frequency and the size of the subcarrier spacing (SCS), respectively, and η i k It expresses errors caused by influences such as AWGN (additive white Gaussian noise). If the above phase measurements suffer from the same initial reception phase error (i.e. Φ 1 rx =Φ 2 rx ) Φ i rx The influence of Φ 1 k Wow Φ 2 k can be removed by the differential method of taking the difference, Φ i tx The influence of can also be eliminated through the same concept.

[0220] Meanwhile, Fig. 13 illustrates a case in which ii) multiple signals transmitted by multiple transmitting nodes are received by one receiving node in a single differential method based on DL PRS. Referring to Fig. 13, TRP1 and TRP2 transmit PRS1 and PRS2 to the same UE, respectively. TRP1 and TRP2 may be a target TRP and a reference TRP, respectively. The terminal measures the phase for receiving PRS1 and calculates Φ PRS1 , and the terminal measures the phase for PRS2 reception to obtain Φ PRS2 You can obtain Φ PRS1 and Φ PRS2The phase error can be eliminated by using the difference.

[0221] Double differencing / differential is a technique that uses multiple single differencing / differentials.

[0222] Fig. 14 illustrates an example of a double-difference method for DL ​​PRS. Compared to Fig. 13, Fig. 14 additionally illustrates another device, the Positioning Reference Unit (PRU), which measures PRS1 / 2. i) The phase of PRS1 received by the PRU, Φ PRU PRS1 and the phase of PRS2 is Φ PRU PRS2 The difference is the single difference measured by the PRU, and ii) the phase of PRS1 received by the UE, Φ. UE PRS1 and the phase of PRS2 is Φ UE PRS1 The difference is the single difference measured by the UE. The double difference can be obtained by the difference between i) the single difference measured by the PRU and ii) the single difference measured by the terminal.

[0223] Meanwhile, the measurement results of the Positioning Reference Unit (PRU) can be useful for eliminating phase errors, especially phase errors occurring at the transmitter. A PRU refers to a terminal whose location information is known (or estimated with relatively high accuracy). When a PRU measures a PRS transmitted from a TRP at a specific point in time, this can be used to estimate the transmission error occurring at the point in time and in the PRS at the corresponding TRP. When estimating the position of a target terminal, measurement information performed by the target terminal and measurement information performed by the PRU terminal, or information on the transmission error measured based on the measurement information, can be utilized to perform more precise positioning. For such precise positioning, the case where the same transmission error occurs in the measurements made by the target terminal and the PRU terminal, which are the target of positioning, must be considered. To this end, certain conditions may need to be satisfied, such as the terminal and the PRU measuring the same PRS resource at the same point in time. To this end, a higher node such as a location server can provide information on requirements or recommendations for measurement to terminals and PRUs that are the target of positioning, and this information can include information on PRS resources that the terminal must measure and the timing at which the corresponding PRS resources must be measured.

[0224] The improvement in positioning accuracy achieved through a PRU may vary depending on the relative positions of the PRU and the target terminal. For example, according to TR38.859, a research result on Rel-18 positioning, CPP performance is confirmed to improve as the position of the target terminal is closer to the position of the PRU used for double differencing / differential purposes. Therefore, to obtain precise CPP performance, it may be necessary to select an appropriate PRU according to the position and environment of the target terminal and design the measurement operation considering this. However, based on the Rel-17 NR standard and the Rel-18 standard technologies currently being discussed, it may not be easy for a specific terminal to know and utilize the location information of another terminal using the supported standard technologies.

[0225] In this specification, considering the above characteristics and problems, we propose a method for generating and providing suitable positioning measurement-related information by considering relative location information of two different terminals (or between multiple terminals), and operating methods of upper nodes (e.g., TRP or location servers) and terminals based on the generated information. Characteristically, the different terminals may include a terminal that is the target of location information estimation (hereinafter, a target terminal) and / or a PRU.

[0226] Although this specification describes methods that are proposed mainly for the purpose of phase error elimination in CPP by utilizing measurements of a target terminal and a PRU, the scope of the invention is not limited thereto, and can be generally applied to various positioning techniques in which a PRU is utilized to obtain positioning accuracy of a target terminal through processes such as controlling errors that affect reference signals transmitted and received for positioning.

[0227] In this specification, a method is proposed mainly based on a DL positioning technique in which a terminal receives and measures PRS resources transmitted by a TRP, but is not limited thereto, and can be generally applied to a UL positioning technique in which a TRP receives and measures SRS resources transmitted by a terminal (e.g., a target terminal or PRU), or a DL+UL positioning technique including both DL and UL.

[0228] The PRU referred to in this specification is a terminal whose location is accurately known by a location server (or an upper node such as a gNB / TRP), and the proposed method is described, but is not limited thereto, and may also be applied to cases where a general terminal (e.g., another target terminal) that satisfies certain conditions performs the role of a PRU. The certain conditions may, for example, be considered conditions for positioning accuracy or reliability thereof.

[0229] In this specification, a method is described based on the 3GPP NR system, focusing on the positioning technique in the supported DL direction, but is not limited thereto, and can also be applied to other positioning techniques capable of measuring the position of a terminal.

[0230] The proposed methods may be implemented in combination with one or more of the methods, or may be implemented independently without any combination. Certain terms, symbols, and sequences used may be replaced with other terms, symbols, and sequences, as long as the principles of the invention are maintained.

[0231] Hereinafter, the term "location server" may be used with the same meaning as location server or positioning server, and may be used as a concept including the functions of E-SMLC and / or SLP and / or LMF.

[0232] Hereinafter, the term "pre-configured positioning support information" may refer to preset information provided to a terminal by a location server or base station. Pre-configured positioning support information may refer to information supporting simultaneous measurement or reporting between different devices (e.g., target UE and PRU). As a specific example, the preset positioning support information may include information about the terminal's target PRS resource for measurement and information such as measurement timing.

[0233] Hereinafter, "simultaneous measurement" is used to refer to the operation of two or more devices (e.g., terminals) measuring a specific reference signal within the same time resource. Simultaneous measurement can also be applied when additional conditions are included (e.g., matching the RF frequency that serves as the reference for CPM).

[0234] Hereinafter, “terminal” may be used as a concept encompassing one or both of the target terminal and / or PRU unless otherwise specified.

[0235] In the description below, RSPD (reference signal carrier phase difference) may also be referred to as RSCPD (reference signal carrier phase difference).

[0236] [Proposal 1] Provision of multiple preset positioning support information

[0237] Proposal 1 may include a location server or base station providing multiple preset positioning support information to a terminal. To this end, the location server may configure one or more pieces of positioning support information and provide them to the terminal via LPP, or to the base station via NRPPa (or LPPa). If the base station receives one or more pieces of preset positioning support information, or information related thereto, from the location server, the base station may provide the terminal with the necessary information. Specifically, higher-layer signaling, such as SIB or UE-dedicated RRC, may be used.

[0238] Whether a terminal can acquire preset positioning support information can be determined by the terminal capability (UE capability). If the terminal has a UE capability for the preset positioning support information, the terminal reports the capability, and an upper node (e.g., a base station or a location server) can perform related operations by considering the reported UE capability. The UE capability may be information indicating whether CPP is supported, or may be information related to the acquisition of preset positioning support information that can be configured separately from whether CPP is supported. If the UE capability is related to the acquisition of preset positioning support information, the UE capability may be designed to include more details. For example, the details may include the maximum number of preset positioning support information that the terminal can receive and process, and / or may include the types of preset positioning support information that the terminal can receive and process.

[0239] The base station and terminal can obtain measurements for PRS resources based on multiple preset positioning support information sets configured / provided. For example, the terminal can use one (or more) of the multiple preset positioning support information sets received to determine the target PRS resources to be measured and the corresponding reception timing.

[0240] As a specific example, a target terminal can receive multiple preset positioning support information via upper-layer signaling (e.g., LPP or SIB / dedicated RRC) transmitted by an upper node (e.g., a location server or base station), and can utilize some of the preset positioning support information received to determine and measure the PRS resources and timing of the measurement target. This can be advantageous from the perspective of power saving of the terminal.

[0241] As a specific example, the PRU can receive multiple preset positioning support information via higher layer signaling (e.g., LPP or SIB / dedicated RRC) transmitted by an upper node (e.g., a location server or base station), and can perform measurements on all PRS resources and timings determined by all received preset positioning support information. This may be for the purpose of obtaining all available measurement information when aiming to improve the positioning accuracy of a target terminal by utilizing the PRU's measurements.

[0242] Each of the preset positioning support information items set / provided above may be assigned an individual indicator (e.g., an index). For example, if N preset positioning support information items are provided by a location server, each of the provided preset positioning support information items may be assigned a different N integer as an indicator.

[0243] In this case, when multiple preset positioning support information is set / provided, each preset positioning support information can be set to express measurement-related information for different PRUs, and a target terminal that receives the same can be configured to be provided with an opportunity to perform simultaneous measurement for adjacent PRUs.

[0244] In this case, when multiple preset positioning support information is set / provided, an additional method may be applied to support the terminal's operation of selecting some of the multiple preset positioning support information provided. This may be for the purpose of supporting the terminal to perform measurements by utilizing / applying appropriate preset positioning support information while considering other adjacent terminals, thereby improving positioning accuracy while simultaneously achieving power saving and complexity reduction for the terminals. Specifically, one of the detailed methods below may be used, or a combination thereof.

[0245] [Proposal 1-1] The upper node indicates some of the preset positioning support information.

[0246] Proposal 1-1 may include, when a method is used in which a location server or a base station provides a plurality of preset positioning support information to a terminal, that some of the preset positioning support information is provided by the location server or the base station as information that is recommended or indicated to a specific terminal. To this end, the location server may select one or more preset positioning support information(s) for the target terminal from among the plurality of preset positioning support information that have already been provided, and provide the same to the terminal via LPP, or to the base station via NRPPa (or LPPa). If the base station receives one or more preset positioning support information selected for a specific terminal from the location server, or information related thereto, the base station may provide the terminal with the necessary information, and as a specific method, higher layer signaling such as SIB or UE dedicated RRC may be used.

[0247] When Proposal 1-1 is used and the UE capability that the terminal can report includes a maximum number of preset positioning support information that the terminal can receive and process, the information expressed by the UE capability can be set to be the maximum number of preset positioning support information that the terminal can process simultaneously. This can mean that the maximum number of preset positioning support information that the upper node sets / provides and the terminal can receive and store information can be greater than the number indicated by the UE capability, and can mean that the maximum number of preset positioning support information that is recommended / indicated by the upper node and / or that the terminal can actually apply simultaneously can be determined by the UE capability of the terminal.

[0248] When a plurality of preset positioning support information is assigned an indicator and used, the indicator can be used to recommend / instruct some of the plurality of preset positioning support information set by the upper node to the terminal. For example, when the upper node provides the terminal with information on the indicator of a specific preset positioning support information to recommend / instruct, the terminal can receive this and determine the preset positioning support information to be applied based on the plurality of preset positioning support information already received and the information of each indicator.

[0249] As a specific example, a target terminal can receive multiple preset positioning support information via higher layer signaling (e.g., LPP or SIB / dedicated RRC) transmitted by an upper node (e.g., location server or base station), and then receive information on recommended indicator(s) provided by the upper node. The target terminal can use the multiple preset positioning support information and the indicator recommendation information to determine the PRS resource and timing of the measurement target and measure it. This can be advantageous in that, when the location server can estimate the position of the terminal through the terminal's measurement report, as in the UE-assisted positioning technique, it can determine an appropriate (e.g., adjacent) PRU for the target terminal and inform the target terminal of the preset positioning support information associated therewith, thereby supporting simultaneous measurement between adjacent target terminals and PRUs. In addition, it has an advantage in that it can adaptively provide information on PRS resources suitable for taking measurements at the position of the target terminal.

[0250] As a specific example, the PRU can receive multiple preset positioning support information via higher layer signaling (e.g., LPP or SIB / dedicated RRC) transmitted by an upper node (e.g., location server or base station), and then receive information on indicator indicator(s) provided by the upper node. The PRU can determine the PRS resources and timing of the measurement target and measure them by utilizing the multiple preset positioning support information and indicator indication information that have been configured. This can be advantageous in that, when the location server can estimate the position of the terminal through the terminal's measurement report, as in the UE-assisted positioning technique, it can determine the targets of specific target terminals adjacent to the PRU and instruct the PRU to provide appropriate preset positioning support information (e.g., PRS resources measured by the target terminals and their timing information that are identical or similar) to support the positioning of the target terminals, thereby supporting simultaneous measurement between adjacent target terminals and the PRU. Specifically, in order to apply the double differencing technique, the reference signal measured by the target terminal must be identical to the reference signal measured by the PRU. Therefore, a target terminal performing UE-assisted positioning can select an advantageous adjacent PRU to improve positioning accuracy, measure the same reference signal as that measured by the selected PRU, and report it to the network.

[0251] In addition, the proposed method does not change the signaling transmission / reception or measurement execution method of the target terminal, and can control the measurement operation of the PRU as needed, thereby achieving the effects of reducing power and complexity of the PRU and reducing measurement reporting overhead.

[0252] Another method for a base station to recommend / indicate specific preset positioning support information for a specific terminal may be to utilize activation / deactivation using MAC CE. For example, the MAC CE may indicate through LCID that it contains information related to the preset positioning support information. If the MAC CE includes information recommending / indicating the preset positioning support information, the MAC CE may include indicator information for the preset positioning support information. If the terminal can perform measurements by applying only one preset positioning support information at a time, the indicator information included in the MAC CE indicates an activation indication for the corresponding preset positioning support information, and if there is a preset positioning support information that was previously used, it may be deactivated at the same time. If the terminal can perform measurements by applying more than one preset positioning support information at a time, the MAC CE may include an additional field to indicate whether the preset positioning support information is activated / deactivated along with the indicator information for the preset positioning support information.

[0253] Proposal 1-1 may be advantageous in that the upper node can determine suitable preset positioning support information based on the location information of the terminal and thereby support efficient simultaneous measurement operations.

[0254] [Proposal 1-2] The upper node provides multiple preset positioning support information and the location information of the PRU.

[0255] Proposal 1-2 may include providing location information of a terminal corresponding to each preset positioning support information when a method is used in which a location server or base station provides a plurality of preset positioning support information to a terminal. In this case, the terminal corresponding to the preset positioning support information refers to a terminal that performs positioning measurement based on the information, and may refer to a terminal that performs measurement using PRS resources and measurement timing included in the preset positioning support information, for example. The terminal corresponding to the preset positioning support information may be a PRU, and for the convenience of explanation, the term PRU will be used for the following description.

[0256] Proposals 1-2 may be suitable for UE-based positioning techniques, where the terminal directly measures its own location. For example, the terminal can compare its previously calculated location information with the location information of each PRU provided by the upper node, select an appropriate (or adjacent) PRU, and utilize the corresponding preset positioning support information.

[0257] The terminal's location information corresponding to the preset positioning support information provided to the terminal may include PRU coordinate information. For example, information identical to or similar to the LocationCoordinates defined in the TS 37.355 standard may be defined and used. This is expected to have a beneficial effect in that it accurately provides PRU coordinate information to the terminal.

[0258] The location information of the terminal corresponding to the preset positioning support information provided to the above terminal may include measurements measured by the PRU. For example, measurement information such as AoD, RSRP, RSTD (or ToA) for PRS resources measured by the PRU may be provided to the terminal to support the target terminal in estimating the location information of the PRU. This may be optionally supported in a way that the target terminal receives additional PRU measurements in addition to the CPM for performing double differencing for CPP purposes.

[0259] Proposal 1-2 can provide an advantageous effect in that the terminal can directly select the appropriate preset positioning support information without separate signaling overhead when the terminal performs positioning directly, such as UE-based positioning, or when the terminal has been set with multiple preset positioning support information.

[0260] [Proposal 2] Selection and provision of PRU-related information according to terminal requests.

[0261] Proposal 2 may include selecting and providing PRU-related information upon request from a terminal. In this case, the PRU-related information may include preset positioning assistance information, or may be information on measurements taken from a PRU. To this end, the terminal may be configured to request a higher node to set or change PRU-related information. For example, the terminal may perform the request to receive new PRU-related information, or may perform the request for the purpose of changing previously received PRU-related information. To this end, the terminal may perform the request to the location server via LPP, or may perform the request to the base station via assistance information via MAC CE, DCI, or RRC.

[0262] At least one of the options below may be used as a specific method for a terminal to request PRU-related information from an upper node.

[0263] (Option 2-1) If the upper node provides multiple preset positioning support information to the terminal, the terminal can report the preset positioning support information selected by it to the upper node. For example, if indicator information corresponding to the preset positioning support information is provided, the terminal can perform the requested operation by reporting the indicator information. If the terminal needs to receive the measurement of the PRU, such as in UE-based positioning (e.g., receiving CPM for performing double differencing), the upper node can provide the terminal with the measurement information of the PRU considering (or corresponding to) the information requested by the terminal. This has the advantageous effect of increasing the freedom of operation of the terminal by supporting the operation of selecting preset positioning support information appropriate to the situation, and has the advantage of allowing the terminal to adaptively select an appropriate PRU when directly performing positioning, such as in UE-based positioning. In addition, since the terminal stores the necessary information in advance, it has the advantage of reducing the latency required for transmitting and receiving the preset positioning support information.

[0264] (Option 2-2) If the upper node only provides the terminal with location information for multiple PRUs, the terminal can select a preferred PRU and report it to the upper node. For example, if indicator information for each PRU is provided together with the location information, the terminal can perform the requested operation by reporting the indicator information. In this case, multiple preset positioning support information is not provided, and the upper node can provide the terminal with preset positioning support information based on (or corresponding to) the PRU preference information reported by the terminal after receiving it. In addition, if the terminal needs to receive measurements of the PRU, such as in UE-based positioning (e.g., receiving CPM for performing double differencing), the upper node can provide the terminal with measurement information of the PRU (or corresponding to) considering the information requested by the terminal. This can be suitable for the purpose of reducing the resource overhead required to provide multiple preset positioning support information to the terminal, and has the advantage of allowing the terminal to adaptively select an appropriate PRU when directly performing positioning, such as in UE-based positioning.

[0265] (Option 2-3) It can be set so that the terminal can request the upper node to provide PRU-related information corresponding to a PRU that has not been configured. This can be used for the purpose of requesting a change in a situation where the upper node provides only a single PRU-related information to the terminal and the terminal determines that the existing PRU-related information is invalid. Alternatively, even when the upper node provides multiple PRU-related information to the terminal, this can be used for the purpose of requesting addition / change in a case where the terminal requires additional PRU-related information or determines that the existing PRU-related information is invalid. For this purpose, the information that the terminal requests from the upper node can include 1 bit of information requesting a change or configuration of the PRU-related information. Thereafter, the upper node can configure and provide specific PRU-related information(s) (e.g., preset positioning support information or PRU location, or PRU measurement, etc.) to the terminal. This may be suitable in that it can reduce the resource overhead required to provide preset positioning support information to the terminal, and has an advantageous effect in that the terminal can be utilized as a device that can request information other than previously set PRU-related information as needed.

[0266] [Proposal 3] Determining the validity of preset positioning support information

[0267] Proposal 3 may include a device for determining the validity of preset positioning support information(s) set to a terminal by an upper node such as a location server or a base station, and the operation method of the upper node and the terminal associated therewith. The device for determining the validity may refer to methods for determining whether the preset positioning support information received by the terminal can be used by the terminal. For example, if the validity is not satisfied, the terminal may determine that the preset positioning support information is no longer valid and stop the related operation, or it may be used as a condition for initiating a procedure for updating the preset positioning support information. To this end, the upper node may provide the terminal with the preset positioning support information along with the validity determination information. Alternatively, the validity determination information may be used in a way that is agreed upon in advance (e.g., defined by a standard).

[0268] Proposal 3 may be applied only to a terminal in a specific state, or may be applied differently. The specific state may refer to the RRC state of the terminal, and for example, the validity determination may be applied only to a terminal in the RRC Inactive state. If the validity determination of the preset positioning support information is applied to a terminal in the RRC Inactive state, the validity determination information may be provided through a suspend message received by the terminal in the RRC Release phase. This may be to prevent unnecessary operations of the terminal and ensure stable positioning performance by determining the availability of the preset positioning support information without separate signaling, considering that, unlike the RRC Connected state where dedicated data transmission and reception (e.g., transmission and reception of PUSCH / PDSCH using C-RNTI) between the upper node and the terminal is easy, the RRC Inactive state does not have sufficient procedures for selectively controlling the operation of only a specific terminal or for the terminal to report its own information.

[0269] The specific method of configuring the device for determining validity proposed in Proposal 3 may be one of the detailed methods below, or a combination of multiple methods may be used.

[0270] (Proposal 3-1) Validation of preset positioning support information based on a timer

[0271] Proposal 3-1 may include setting a timer to determine the validity of preset positioning support information. To this end, an upper node, such as a location server or a base station, may provide the terminal with the preset positioning support information along with a corresponding timer size, or the timer size may be determined by a pre-agreed rule (e.g., defined by a standard). The upper node and the terminal may assume that the timer counts from a point in time determined based on the terminal's receipt of the preset positioning support information and / or timer information, and when the timer started from the point in time expires (e.g., when a time equivalent to the timer size has elapsed), the preset positioning support information corresponding to the timer may be assumed to be no longer valid.

[0272] The timer for the above preset positioning support information may be updated or terminated according to specific conditions. For example, if all preset positioning support information corresponding to a specific timer is terminated by a higher node, the timer may be terminated together. For example, if the validity determination by the timer for the preset positioning support information is limited to a specific RRC state and the terminal switches the RRC state, the timer may be terminated together. For example, if the terminal receives new preset positioning support information, the timer may be restarted based on the time of reception of the preset positioning support information. For example, the terminal may be instructed to restart the timer through the MAC CE transmitted by the base station or the LPP provided by the location server.

[0273] Proposal 3-1 offers the advantage of ensuring terminal positioning efficiency without incurring additional signaling overhead, even in situations where dedicated signaling between upper nodes and terminals is not readily available. Furthermore, because it utilizes simple timer-based operations, it has the advantage of not increasing terminal implementation complexity.

[0274] (Proposal 3-2) Validity determination of preset positioning support information based on reference signal measurement results

[0275] Proposal 3-2 may include utilizing measurements of specific reference signal(s) to determine the validity of preset positioning support information. Specifically, based on measurements of specific reference signals measured at the time when the terminal receives preset positioning support information from an upper node, it is determined that the preset positioning support information may be valid in a section where the size / state of the reference signal measurement is maintained, and conversely, if a change (greater than a specific size) occurs in the size / state of the reference signal measurement, it is determined that the preset positioning support information is no longer valid.

[0276] The reference signal used for the above reference signal measurement criteria may be a reference signal transmitted by a base station, such as SSB, PRS, CSI-RS / TRS, and the target of the reference signal used for this purpose may be included in the validity determination information provided by the upper node, or may be determined by a rule agreed upon in advance (e.g., definition by a standard). In the following, the present specification describes proposed methods by referring to the reference signal used for validity determination as a validity reference signal.

[0277] As one specific method of Proposal 3-2, the validity of preset positioning support information may be determined based on a change in the RSRP value for the validity reference signal, or the absolute value of the RSRP. For example, the RSRP value of the validity reference signal measured at the time of receiving the target preset positioning support information may be compared with the RSRP value of the validity reference signal measured at a specific point in time. If the change in the RSRP value of the validity reference signal measured at a specific point in time is within a specific threshold, the corresponding preset positioning support information may be determined to be valid. Otherwise, the corresponding preset positioning support information may be determined to be no longer valid. For this purpose, the specific threshold may be included in the validity determination information provided by the upper node, or may be determined by a pre-agreed rule (e.g., definition by a standard). In another example, if the RSRP value of the validity reference signal measured by the terminal at a specific point in time is a value within a specific range, the corresponding preset positioning support information may be determined to be valid. Otherwise, the corresponding preset positioning support information may be determined to be no longer valid. For this purpose, the above specific threshold may be included in the validity determination information provided by the upper node, or may be determined by a rule agreed upon in advance (e.g., defined by a standard).

[0278] As a specific example of Proposal 3-2, if the reception of the above validation reference signal is attempted but fails (i.e., measurement is not performed), the corresponding preset positioning support information can be determined to be invalid.

[0279] Proposal 3-2 offers the advantage of ensuring terminal positioning efficiency without incurring additional signaling overhead, even in situations where dedicated signaling between the upper node and the terminal is not readily available. Furthermore, because it utilizes a validation procedure based on terminal measurements, it is advantageous in that it can reflect the impact of significant changes in the terminal's location or changes in the wireless channel environment in validating the terminal.

[0280] FIG. 15 is a diagram for explaining a positioning-related procedure performed in a wireless communication system according to one embodiment.

[0281] Referring to FIG. 15, the location server can signal positioning assistance information to the terminal and the PRU, respectively, via TRP(s) (A05). The positioning assistance information provided to the terminal can include information on multiple PRUs (positioning reference units). For example, the positioning assistance information can be the "pre-configured positioning assistance information" described above. The information on the multiple PRUs can include at least one of DL PRS resource information measured by each PRU or information on the measurement timing of each PRU.

[0282] Based on the positioning support information, the terminal can determine at least one of the plurality of PRUs and the DL PRS(s) associated with the PRU (A10). At least one PRU can be selected based on PRU location information. For example, a PRU located close to the terminal can be preferentially selected. In other words, a PRU can be selected based on the distance between the terminal and each PRU. The PRU location information can be received from the network or directly acquired via wireless sensing for integrated sensing and communication (ISAC).

[0283] The terminal can receive (A15) and measure (A20) the determined DL PRS(s) from the TRP(s). The PRU selected by the terminal can also receive (A15) and measure (A25) the same DL PRS(s) as the terminal from the TRP(s). The terminal and each PRU selected by the terminal can simultaneously measure the same DL PRS in the same time resource. The measurements of the terminal / PRU can include the CPP for the PRS.

[0284] Such DL PRS measurements of terminals / PRUs may be performed multiple times (A35 / A40).

[0285] The terminal can transmit a terminal measurement report based on the measurement of DL PRS(s) (A45).

[0286] Each PRU may also transmit a PRU measurement report based on measurements of DL PRS(s) (A50).

[0287] The location server may select at least one PRU and / or a measurement report of the PRU that measures the same DL PRS as measured by the terminal based on the measurement report of the terminal (A55).

[0288] The location server can determine the location of the terminal based on the terminal's measurement report and the PRU's measurement report (A60). For example, the terminal's measurement report and the PRU's measurement report can each be associated with an RSCPD. The PRU's measurement report can be used to obtain a double difference for the terminal's measurement report. The location server can estimate the terminal's location more accurately by eliminating phase errors in the terminal's measurement report based on the double difference.

[0289] Fig. 16 illustrates a flowchart of a method for transmitting a measurement report of a terminal according to one embodiment.

[0290] Referring to FIG. 16, a terminal can receive positioning assistance information (B05) from the network, which includes information about multiple positioning reference units (PRUs). For example, the positioning assistance information may be the "pre-configured positioning assistance information" described above.

[0291] The terminal can select at least one PRU among the plurality of PRUs based on the positioning support information (B10).

[0292] The terminal can determine at least one reference signal to be measured by the terminal from among a plurality of reference signals based on the selection of at least one PRU (B15).

[0293] The terminal can transmit a positioning-related measurement report based on measurements for at least one determined reference signal (B20).

[0294] Each of the at least one reference signal measured at the terminal may be identical to a reference signal measured at each PRU selected by the terminal.

[0295] The terminal and each PRU selected by the terminal can each measure at least one reference signal in the same time resource.

[0296] The information about the plurality of PRUs may include at least one of resource information about each reference signal measured in each PRU or information about measurement timing of each PRU.

[0297] At least one of the PRUs may be selected based on PRU location information. For example, a PRU located close to the terminal may be preferentially selected. In other words, a PRU may be selected based on the distance between the terminal and each PRU.

[0298] The information about the plurality of PRUs may include PRU location information.

[0299] The above PRU location information can be obtained through wireless sensing for ISAC (integrated sensing and communication).

[0300] The validity of the positioning assistance information may be determined based on at least one of the terminal's measurements or timers for the at least one reference signal.

[0301] The measurement of the terminal for the at least one reference signal may include a reference signal carrier phase measurement.

[0302] FIG. 17 illustrates a flowchart of a method for receiving a measurement report from a network node according to one embodiment. As an example, the network node may include at least one of a base station or a location server.

[0303] Referring to FIG. 17, a network node may transmit positioning assistance information containing information about multiple positioning reference units (PRUs) to a terminal (C05). For example, the positioning assistance information may be the "pre-configured positioning assistance information" described above.

[0304] The network node can receive a measurement report of the terminal for at least one of a plurality of reference signals measured by a plurality of PRUs (C10).

[0305] Additionally, a network node can receive measurement reports from multiple PRUs.

[0306] The network node may select at least one PRU among the plurality of PRUs that measures the same reference signal as that measured by the terminal based on the measurement report of the terminal (C15).

[0307] The network node can determine the location of the terminal based on the measurement report of the terminal and the measurement report of at least one selected PRU (C20).

[0308] For example, the terminal's measurement report and the PRU's measurement report may each be for positioning (CPP) based on carrier phase measurement (CPM) for a reference signal (e.g., RSCPD). The PRU's measurement report may be used to obtain a double difference for the terminal's measurement report. By eliminating phase errors in the terminal's measurement report based on the double difference, the network node can more accurately estimate the terminal's position.

[0309] The above terminal and each of the above selected PRUs can each measure the same reference signal in the same time resource and report it to the network node.

[0310] The information about the plurality of PRUs may include at least one of resource information about each reference signal measured in each PRU or information about measurement timing of each PRU.

[0311] The information about the plurality of PRUs may include PRU location information.

[0312] The validity of the positioning assistance information may be determined based on at least one of the terminal's measurements or timers for the at least one reference signal.

[0313] Each of the measurement report of the above terminal and the measurement report of the PRU may relate to measurement of the reference signal carrier phase.

[0314] Fig. 18 illustrates a communication system (1) applicable to this embodiment.

[0315] Referring to FIG. 18, a communication system (1) includes a wireless device, a base station, and a network. Here, the wireless device refers to a device that performs communication using a wireless access technology (e.g., 5G NR (New RAT), LTE (Long Term Evolution)) and may be referred to as a communication / wireless / 5G device. Although not limited thereto, the wireless device may include a robot (100a), a vehicle (100b-1, 100b-2), an XR (eXtended Reality) device (100c), a hand-held device (100d), a home appliance (100e), an IoT (Internet of Things) device (100f), and an AI device / server (400). For example, the vehicle may include a vehicle equipped with a wireless communication function, an autonomous vehicle, a vehicle capable of performing vehicle-to-vehicle communication, etc. Here, the vehicle may include an Unmanned Aerial Vehicle (UAV) (e.g., a drone). XR devices include AR (Augmented Reality) / VR (Virtual Reality) / MR (Mixed Reality) devices, and can be implemented in the form of HMD (Head-Mounted Device), HUD (Head-Up Display) installed in a vehicle, television, smartphone, computer, wearable device, home appliance, digital signage, vehicle, robot, etc. Mobile devices can include smartphone, smart pad, wearable device (e.g., smart watch, smart glass), computer (e.g., laptop, etc.), etc. Home appliances can include TV, refrigerator, washing machine, etc. IoT devices can include sensors, smart meters, etc. For example, base stations and networks can also be implemented as wireless devices, and a specific wireless device (200a) can act as a base station / network node to other wireless devices.

[0316] Wireless devices (100a to 100f) can be connected to a network (300) via a base station (200). Artificial Intelligence (AI) technology can be applied to the wireless devices (100a to 100f), and the wireless devices (100a to 100f) can be connected to an AI server (400) via the network (300). The network (300) can be configured using a 3G network, a 4G (e.g., LTE) network, a 5G (e.g., NR) network, etc. The wireless devices (100a to 100f) can communicate with each other via the base station (200) / network (300), but can also communicate directly (e.g., sidelink communication) without going through the base station / network. For example, vehicles (100b-1, 100b-2) can communicate directly (e.g., V2V (Vehicle to Vehicle) / V2X (Vehicle to Everything) communication). In addition, IoT devices (e.g., sensors) can communicate directly with other IoT devices (e.g., sensors) or other wireless devices (100a to 100f).

[0317] Wireless communication / connection (150a, 150b, 150c) can be established between wireless devices (100a~100f) / base stations (200), and base stations (200) / base stations (200). Here, wireless communication / connection can be achieved through various wireless access technologies (e.g., 5G NR) such as uplink / downlink communication (150a), sidelink communication (150b) (or D2D communication), and communication between base stations (150c) (e.g., relay, IAB (Integrated Access Backhaul). Through wireless communication / connection (150a, 150b, 150c), wireless devices and base stations / wireless devices, and base stations and base stations can transmit / receive wireless signals to each other. For example, wireless communication / connection (150a, 150b, 150c) can transmit / receive signals through various physical channels. To this end, at least some of various configuration information setting processes for transmitting / receiving wireless signals, various signal processing processes (e.g., channel encoding / decoding, modulation / demodulation, resource mapping / demapping, etc.), and resource allocation processes can be performed based on various proposals of the present invention.

[0318] Figure 19 illustrates a wireless device applicable to the present invention.

[0319] Referring to FIG. 19, the first wireless device (100) and the second wireless device (200) can transmit and receive wireless signals through various wireless access technologies (e.g., LTE, NR). Here, {the first wireless device (100), the second wireless device (200)} can correspond to {the wireless device (100x), the base station (200)} and / or {the wireless device (100x), the wireless device (100x)} of FIG. 19.

[0320] A first wireless device (100) includes one or more processors (102) and one or more memories (104), and may further include one or more transceivers (106) and / or one or more antennas (108). The processor (102) controls the memories (104) and / or the transceivers (106), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (102) may process information in the memory (104) to generate first information / signal, and then transmit a wireless signal including the first information / signal via the transceiver (106). In addition, the processor (102) may receive a wireless signal including second information / signal via the transceiver (106), and then store information obtained from signal processing of the second information / signal 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 perform some or all of the processes controlled by the processor (102), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (102) and the memory (104) may be part of a communication modem / circuit / chip designed to implement a wireless communication technology (e.g., LTE, NR). The transceiver (106) may be connected to the processor (102) and may transmit and / or receive wireless signals via one or more antennas (108). The transceiver (106) may include a transmitter and / or a receiver. The transceiver (106) may be used interchangeably with an RF (Radio Frequency) unit. In one embodiment of the present invention, the wireless device may mean a communication modem / circuit / chip.

[0321] The second wireless device (200) includes one or more processors (202), one or more memories (204), and may further include one or more transceivers (206) and / or one or more antennas (208). The processor (202) controls the memories (204) and / or the transceivers (206), and may be configured to implement the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor (202) may process information in the memory (204) to generate third information / signals, and then transmit a wireless signal including the third information / signals via the transceivers (206). Furthermore, the processor (202) may receive a wireless signal including fourth information / signals via the transceivers (206), and then store information obtained from signal processing of 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 perform some or all of the processes controlled by the processor (202), or may store software code including commands for performing the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. Here, the processor (202) and the memory (204) may be part of a communication modem / circuit / chip designed to implement wireless communication technology (e.g., LTE, NR). The transceiver (206) may be connected to the processor (202) and may transmit and / or receive wireless signals via one or more antennas (208). The transceiver (206) may include a transmitter and / or a receiver. The transceiver (206) may be used interchangeably with an RF unit. In one embodiment of the present invention, the wireless device may also mean a communication modem / circuit / chip.

[0322] Hereinafter, hardware elements of the wireless device (100, 200) will be described in more specific examples. Although not limited thereto, one or more protocol layers may be implemented by one or more processors (102, 202). For example, one or more processors (102, 202) may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, SDAP). One or more processors (102, 202) may generate one or more Protocol Data Units (PDUs) and / or one or more Service Data Units (SDUs) according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operation flowcharts disclosed in this document. One or more processors (102, 202) may generate signals (e.g., baseband signals) comprising PDUs, SDUs, messages, control information, data or information according to the functions, procedures, proposals and / or methods disclosed herein, and provide the signals to one or more transceivers (106, 206). One or more processors (102, 202) may receive signals (e.g., baseband signals) from one or more transceivers (106, 206) and obtain PDUs, SDUs, messages, control information, data or information according to the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed herein.

[0323] One or more processors (102, 202) may be referred to as a controller, a microcontroller, a microprocessor, or a microcomputer. One or more processors (102, 202) may be implemented by hardware, firmware, software, or a combination thereof. For 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, 202). The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be implemented to include modules, procedures, functions, etc. The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software configured to perform one or more processors (102, 202) or stored in one or more memories (104, 204) and executed by one or more processors (102, 202). The descriptions, functions, procedures, suggestions, methods and / or operation flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, instructions and / or sets of instructions.

[0324] One or more memories (104, 204) may be coupled to one or more processors (102, 202) and may store various forms of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories (104, 204) may be configured as ROM, RAM, EPROM, flash memory, hard drives, registers, cache memory, computer-readable storage media, and / or combinations thereof. The one or more memories (104, 204) may be located internally and / or externally to the one or more processors (102, 202). Additionally, the one or more memories (104, 204) may be coupled to the one or more processors (102, 202) via various technologies, such as wired or wireless connections.

[0325] One or more transceivers (106, 206) can transmit user data, control information, wireless signals / channels, etc., as mentioned in the methods and / or flowcharts of this document, to one or more other devices. One or more transceivers (106, 206) can receive user data, control information, wireless signals / channels, etc., as mentioned in the descriptions, functions, procedures, proposals, methods and / or flowcharts of this document, from one or more other devices. For example, one or more transceivers (106, 206) can be connected to one or more processors (102, 202) and can transmit and receive wireless signals. For example, one or more processors (102, 202) can control one or more transceivers (106, 206) to transmit user data, control information, or wireless signals to one or more other devices. Additionally, one or more processors (102, 202) may control one or more transceivers (106, 206) to receive user data, control information, or wireless signals from one or more other devices. Additionally, one or more transceivers (106, 206) may be coupled to one or more antennas (108, 208), and one or more transceivers (106, 206) may be configured to transmit and receive user data, control information, wireless signals / channels, or the like, as referred to in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed herein, via one or more antennas (108, 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, 206) can convert received user data, control information, wireless signals / channels, etc. from RF band signals to baseband signals in order to process the received user data, control information, wireless signals / channels, etc. using one or more processors (102, 202).One or more transceivers (106, 206) may convert user data, control information, wireless signals / channels, etc. processed by one or more processors (102, 202) from baseband signals to RF band signals. For this purpose, one or more transceivers (106, 206) may include an (analog) oscillator and / or filter.

[0326] Figure 20 illustrates another example of a wireless device applicable to the present invention. The wireless device may be implemented in various forms depending on the use case / service (see Figure 18).

[0327] Referring to FIG. 20, the wireless device (100, 200) corresponds to the wireless device (100, 200) of FIG. 19 and may be composed of various elements, components, units / units, and / or modules. For example, the wireless device (100, 200) may include a communication unit (110), a control unit (120), a memory unit (130), and an additional element (140). The communication unit may include a communication circuit (112) and a transceiver(s) (114). For example, the communication circuit (112) may include one or more processors (102, 202) and / or one or more memories (104, 204) of FIG. 19. For example, the transceiver(s) (114) may include one or more transceivers (106, 206) and / or one or more antennas (108, 208) of FIG. 19. The control unit (120) is electrically connected to the communication unit (110), the memory unit (130), and the additional elements (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). In addition, the control unit (120) may transmit information stored in the memory unit (130) to an external device (e.g., another communication device) via a wireless / wired interface through the communication unit (110), or store information received from an external device (e.g., another communication device) via a wireless / wired interface in the memory unit (130).

[0328] The additional element (140) may be configured in various ways depending on the type of the wireless device. For example, the additional element (140) may include at least one of a power unit / battery, an input / output unit (I / O unit), a driving unit, and a computing unit. Although not limited thereto, the wireless device may be implemented in the form of a robot (Fig. 19, 100a), a vehicle (Fig. 19, 100b-1, 100b-2), an XR device (Fig. 19, 100c), a portable device (Fig. 19, 100d), a home appliance (Fig. 19, 100e), an IoT device (Fig. 19, 100f), a terminal for digital broadcasting, a hologram device, a public safety device, an MTC device, a medical device, a fintech device (or a financial device), a security device, a climate / environmental device, an AI server / device (Fig. 19, 400), a base station (Fig. 19, 200), a network node, etc. Wireless devices may be mobile or stationary depending on the use / service.

[0329] In FIG. 20, various elements, components, units / parts, and / or modules within the wireless device (100, 200) may be entirely interconnected via a wired interface, or at least some may be wirelessly connected via a communication unit (110). For example, within the wireless device (100, 200), the control unit (120) and the communication unit (110) may be wired, and the control unit (120) and a first unit (e.g., 130, 140) may be wirelessly connected via the communication unit (110). In addition, each element, component, unit / part, and / or module within the wireless device (100, 200) may further include one or more elements. For example, the control unit (120) may be composed of a set of one or more processors. For example, the control unit (120) may be composed of a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing processor, a memory control processor, etc. As another example, the memory unit (130) may be composed of RAM (Random Access Memory), DRAM (Dynamic RAM), ROM (Read Only Memory), flash memory, volatile memory, non-volatile memory, and / or a combination thereof.

[0330] Figure 21 illustrates a vehicle or autonomous vehicle applicable to the present invention. The vehicle or autonomous vehicle may be implemented as a mobile robot, car, train, manned / unmanned aerial vehicle (AV), ship, etc.

[0331] Referring to FIG. 21, a vehicle or autonomous vehicle (100) may include an antenna unit (108), a communication unit (110), a control unit (120), a driving 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 blocks 110 / 130 / 140 of FIG. 20, respectively.

[0332] The communication unit (110) can transmit and receive signals (e.g., data, control signals, etc.) with external devices such as other vehicles, base stations (e.g., base stations, road side units, etc.), and servers. The control unit (120) can control elements of the vehicle or autonomous vehicle (100) to perform various operations. The control unit (120) can include an ECU (Electronic Control Unit). The drive unit (140a) can drive the vehicle or autonomous vehicle (100) on the ground. The drive unit (140a) can include an engine, a motor, a power train, wheels, brakes, a steering device, etc. The power supply unit (140b) supplies power to the vehicle or autonomous vehicle (100) and can include a wired / wireless charging circuit, a battery, etc. The sensor unit (140c) can obtain vehicle status, surrounding environment information, user information, etc. The sensor unit (140c) may include an IMU (inertial measurement unit) sensor, a collision sensor, a wheel sensor, a speed sensor, an incline sensor, a weight detection sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a humidity sensor, an ultrasonic sensor, an illuminance sensor, a pedal position sensor, etc. The autonomous driving unit (140d) may implement a technology for maintaining a driving lane, a technology for automatically controlling speed such as adaptive cruise control, a technology for automatically driving along a set path, a technology for automatically setting a path and driving when a destination is set, etc.

[0333] For example, the communication unit (110) can receive map data, traffic information data, etc. from an external server. The autonomous driving unit (140d) can generate an autonomous driving route and driving plan based on the acquired data. The control unit (120) can control the drive unit (140a) so that the vehicle or autonomous vehicle (100) moves along the autonomous driving route according to the driving plan (e.g., speed / direction control). During autonomous driving, the communication unit (110) can irregularly / periodically acquire the latest traffic information data from an external server and can acquire surrounding traffic information data from surrounding vehicles. In addition, during autonomous driving, the sensor unit (140c) can acquire vehicle status and surrounding environment information. The autonomous driving unit (140d) can update the autonomous driving route and driving plan based on newly acquired data / information. The communication unit (110) can transmit information regarding the vehicle location, autonomous driving route, driving plan, etc. to the external server. External servers can predict traffic information data in advance using AI technology or other technologies based on information collected from vehicles or autonomous vehicles, and provide the predicted traffic information data to the vehicles or autonomous vehicles.

[0334] The embodiments described above are combinations of components and features of the present invention in a predetermined form. Each component or feature should be considered optional unless explicitly stated otherwise. Each component or feature may be implemented without being combined with other components or features. Furthermore, it is also possible to form an embodiment of the present invention by combining some components and / or features. The order of operations described in the embodiments of the present invention may be changed. Some components or features of one embodiment may be included in another embodiment or may be replaced with corresponding components or features of another embodiment. Claims that do not have an explicit citation relationship in the patent claims may be combined to form an embodiment or may be incorporated as a new claim through a post-application amendment.

[0335] It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the scope of the invention. Therefore, the above detailed description should not be construed as limiting in any respect, but rather as illustrative. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the present invention are intended to be included within the scope of the present invention.

[0336] The present invention can be used in a terminal, base station, or other equipment of a wireless mobile communication system.

Claims

1. In a method for a terminal to transmit a measurement report in a wireless communication system, Receive positioning assistance information from the network, including information about multiple positioning reference units (PRUs); Selecting at least one PRU among the plurality of PRUs based on the positioning support information; determining at least one reference signal to be measured by the terminal among a plurality of reference signals based on the selection of at least one PRU; and A method comprising transmitting a positioning-related measurement report based on measurements for at least one reference signal determined above.

2. In paragraph 1, A method wherein each of the at least one reference signal measured at the terminal is identical to a reference signal measured at each PRU selected by the terminal.

3. In paragraph 1, A method in which the terminal and each PRU selected by the terminal each measure the at least one reference signal in the same time resource.

4. In paragraph 1, A method wherein the information about the plurality of PRUs includes at least one of resource information about each reference signal measured in each PRU or information about measurement timing of each PRU.

5. In paragraph 1, A method wherein at least one PRU is selected based on PRU location information.

6. In paragraph 5, A method wherein information about the plurality of PRUs includes PRU location information.

7. In paragraph 5, A method in which the above PRU location information is obtained through wireless sensing for ISAC (integrated sensing and communication).

8. In paragraph 1, A method wherein the validity of the positioning assistance information is determined based on at least one of the terminal's measurements or timers for the at least one reference signal.

9. In paragraph 1, A method wherein the measurement of the terminal for the at least one reference signal comprises measuring the reference signal carrier phase.

10. A processor-readable recording medium having recorded thereon a program for performing the method described in paragraph 1.

11. In a device for wireless communication, memory that stores commands; and A processor that operates by executing the above instructions, The operation of the above processor is as follows: Receive positioning assistance information from the network, including information about multiple positioning reference units (PRUs); Selecting at least one PRU among the plurality of PRUs based on the positioning support information; determining at least one reference signal to be measured in the device among a plurality of reference signals based on selection of at least one PRU; and A device comprising transmitting a positioning-related measurement report based on measurements for at least one reference signal determined above.

12. In paragraph 11, Including a transmitter and receiver, The above device is a terminal operating in a wireless communication system.

13. In paragraph 11, The above device is a processing device configured to control a terminal operating in a wireless communication system.

14. In a method for a network node to receive a measurement report in a wireless communication system, Transmit positioning assistance information containing information about multiple PRUs (positioning reference units) to the terminal; Receiving a measurement report of the terminal for at least one of the plurality of reference signals measured in the plurality of PRUs; Based on the measurement report of the terminal, at least one PRU is selected from among the plurality of PRUs to measure the same reference signal as that measured by the terminal; and A method comprising determining a location of the terminal based on a measurement report of the terminal and a measurement report of at least one selected PRU.

15. In a network node configured to operate in a wireless communication system, At least one memory for storing instructions; and comprising at least one processor that operates by executing the above instructions, The operation of at least one processor is: Transmit positioning assistance information containing information about multiple PRUs (positioning reference units) to the terminal; Receiving a measurement report of the terminal for at least one of the plurality of reference signals measured in the plurality of PRUs; Based on the measurement report of the terminal, at least one PRU is selected from among the plurality of PRUs to measure the same reference signal as that measured by the terminal; and A network node comprising determining the location of the terminal based on a measurement report of the terminal and a measurement report of at least one selected PRU.

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