Method for transmitting and receiving information for measurement of prs in a wireless communication system and apparatus therefor

Abstract

The present disclosure relates to a method for transmitting and receiving information for measurement of PRS in a wireless communication system and an apparatus therefor. A method for a user equipment to transmit information for measurement of a Positioning Reference Signal (PRS) in a wireless communication system according to an embodiment of the present disclosure, the method comprising: receiving configuration information related to the PRS from a location server, receiving the PRS from a base station, and transmitting information for measurement of the PRS to the location server. The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle. Boundary values of the range of the expected angle are determined based on the first value and the second value.

Description

TECHNICAL FIELD

[0001] The disclosure relates to a method for transmitting and receiving information for measurement of PRS in a wireless communication system and an apparatus thereof. BACKGROUND

[0002] A mobile communication system has been developed to provide a voice service while ensuring user activity. The mobile communication system has expanded its service from voice to data. The current rapidly growing data traffic is consuming resources, and user demand for higher data rate services leads to the demand for more advanced mobile communication systems.

[0003] The next-generation mobile communication system must be able to support the processing of explosive data traffic, a sharp increase in transmission rate per user, accommodate a significant increase in the number of connected devices, and support very low end-to-end latency and high energy efficiency. To this end, various technologies such as dual connectivity, massive multiple-input multiple-output (MIMO), in-band full duplex, non-orthogonal multiple access (NOMA), ultra-wideband support, and device networking are being researched.

[0004] Meanwhile, with regard to positioning, a location server (e.g., location management function, LMF) can transmit information for a search window (expected RSTD and uncertainty) to a base station (TRP) / user equipment (UE) for efficient measurement of timing-related positioning. However, this information (i.e., search window) cannot contribute to angle-based measurement.

[0005] With regard to angle-based measurement, a location server configures PRS resources in a UE. At this time, the location server delivers QCL information of an Rx beam to the UE. The UE receives PRS through the indicated / configured Rx beam, but this can not be the optimal beam perfectly reflecting the location of the TRP.

[0006] With regard to the above-described problem, information related to PRS can be configured in a UE in order to improve beam alignment between the UE / base station. Since an angle value related to PRS can be interpreted differently by the UE and the base station, a specific method of interpreting / configuring the angle related to PRS is required.

[0007] For example, a value representing a beam direction related to PRS can vary depending on whether an angle related to the beam direction is defined as a zenith angle or an elevation angle. That is, the zenith angle is measured in the vertical direction (e.g., 0 to 180), and the elevation angle is measured in the horizontal direction (e.g., -90 to +90).

[0008] As an example, when a value indicating a range of an angle related to a PRS is configured, a corresponding value can be defined according to whether it is based on a value indicating a start point (or an end point) of the range or a value indicating a mid-point of the range, to differently form a beam alignment between a UE / base station related to the PRS. SUMMARY

[0009] When beams between UEs / base stations are not aligned, a result of a position measurement can not be accurate. Information related to an angle of a PRS can be defined / configured in order to improve accuracy of an angle-based position measurement.

[0010] An object of the disclosure is to unambiguously configure information related to an angle of a PRS (angle and range) in terms of UE / base station operations.

[0011] In particular, the disclosure proposes a method for unambiguously configuring an angle related to a PRS in terms of UE / base station operations.

[0012] In addition, the disclosure proposes a method for unambiguously configuring a range of an angle related to a PRS in terms of UE / base station operations.

[0013] The technical objects of the disclosure are not limited to the above-mentioned technical objects, and other technical objects not mentioned above will be clearly understood by a person of ordinary skill in the art from the following description.

[0014] A method for a user equipment to transmit information for a measurement of a positioning reference signal (PRS) in a wireless communication system according to an embodiment of the disclosure includes receiving configuration information related to the PRS from a location server, receiving the PRS from a base station, and transmitting information for a measurement of the PRS to the location server.

[0015] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an intended angle and ii) a second value related to a range of the intended angle.

[0016] Boundary values of the range of the intended angle are determined based on the first value and the second value.

[0017] A first boundary value of the range of the intended angle can be determined as a value obtained by subtracting 1 / 2 of the second value from the first value.

[0018] A second boundary value of the range of the intended angle can be determined as a value obtained by adding 1 / 2 of the second value to the first value.

[0019] The first value can include i) a value related to an angle of arrival (AoA) and a value related to an angle of zenith (ZoA), or ii) a value related to an angle of departure (AoD) and a value related to an angle of zenith (ZoD).

[0020] The second value can include i) a value representing a range of values related to the AoA and a value representing a range of values related to the ZoA, or ii) a value representing a range of values related to the AoD and a value representing a range of values related to the ZoD.

[0021] The first value and the second value can be based on a global coordinate system (GCS) or a local coordinate system (LCS).

[0022] The first value and the second value can be configured in a predefined angular unit.

[0023] The angle information related to the PRS can be applied to a predefined positioning method. The predefined positioning method can include at least one of i) a downlink angle of departure (DL-AoD) based positioning method, ii) a downlink time difference of arrival (DL-TDOA) based positioning method, and / or iii) a multi-round trip time (multi-RTT) based positioning method.

[0024] The configuration information related to the PRS can be received based on a LTE positioning protocol (LPP) message.

[0025] A user equipment (UE) for transmitting information for measurement of a positioning reference signal (PRS) in a wireless communication system according to another embodiment of the disclosure, the UE includes one or more transceivers, one or more processors that control the one or more transceivers, and one or more memories operatively connected to the one or more processors.

[0026] The one or more memories store instructions for executing operations based on a running by the one or more processors.

[0027] The operations include receiving configuration information related to the PRS from a location server, receiving the PRS from a base station, and transmitting information for measurement of the PRS to the location server.

[0028] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle.

[0029] Boundary values of the range of the expected angle are determined based on the first value and the second value.

[0030] A device for controlling a user equipment (UE) to transmit information for measurement of a positioning reference signal (PRS) in a wireless communication system according to yet another embodiment of the disclosure includes one or more processors, and one or more memories operatively connected to the one or more processors.

[0031] The one or more memories store instructions for performing operations based on execution by the one or more processors.

[0032] The operations include receiving configuration information related to the PRS from a location server, receiving the PRS from a base station, and transmitting information for measurement of the PRS to the location server.

[0033] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an intended angle and ii) a second value related to a range of the intended angle.

[0034] Boundary values of the range of the intended angle are determined based on the first value and the second value.

[0035] One or more non-transitory computer-readable media storing one or more instructions according to yet another embodiment of the disclosure.

[0036] The one or more instructions perform operations based on execution by the one or more processors.

[0037] The operations include receiving configuration information related to the PRS from a location server, receiving the PRS from a base station, and transmitting information for measurement of the PRS to the location server.

[0038] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an intended angle and ii) a second value related to a range of the intended angle.

[0039] Boundary values of the range of the intended angle are determined based on the first value and the second value.

[0040] A method for a location server to receive information for measurement of a positioning reference signal (PRS) in a wireless communication system according to yet another embodiment of the disclosure includes transmitting configuration information related to the PRS to a user equipment (UE), wherein the PRS is transmitted from a base station to the UE, and receiving information for measurement of the PRS from the UE.

[0041] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle.

[0042] A boundary value of the range of the expected angle is determined based on the first value and the second value.

[0043] A location server receiving information for measurement of a positioning reference signal (PRS) in a wireless communication system according to yet another embodiment of the disclosure includes one or more transceivers, one or more processors controlling the one or more transceivers, and one or more memories operatively connected to the one or more processors.

[0044] The one or more memories store instructions for performing operations based on execution by the one or more processors.

[0045] The operations include transmitting, to a user equipment (UE), configuration information related to the PRS transmitted from a base station to the UE, and receiving, from the UE, information for measurement of the PRS.

[0046] The configuration information includes information of an angle related to the PRS, and the information of the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle.

[0047] A boundary value of the range of the expected angle is determined based on the first value and the second value.

[0048] According to embodiments of the disclosure, the information of the angle related to the PRS includes i) a first value related to an expected angle and ii) a second value related to a range of the expected angle. A boundary value of the range of the expected angle is determined based on the first value and the second value.

[0049] Accordingly, since a boundary value of the range of the expected angle is determined based on the first value and the second value, ambiguity in a UE / base station beam alignment operation that occurs when utilizing the angle information related to the PRS can be removed.

[0050] According to embodiments of the disclosure, a first boundary value of the range of the expected angle can be determined as a value obtained by subtracting 1 / 2 of the second value from the first value. A second boundary value of the range of the expected angle can be determined as a value obtained by adding 1 / 2 of the second value to the first value.

[0051] Accordingly, it is possible to prevent degradation of the beam alignment level between the UE and the base station caused by different interpretations / determinations of the range of the expected angle related to the PRS in aspects of the UE and the location server (and / or the base station), respectively.

[0052] According to embodiments of the disclosure, the first value can include i) a value related to an angle of arrival (AoA) and a value related to an angle of zenith (ZoA), or ii) a value related to an angle of departure (AoD) and a value related to an angle of zenith (ZoD). Also, the second value can include i) a value representing a range of the value related to the AoA and a value representing a range of the value related to the ZoA, or ii) a value representing a range of the value related to the AoD and a value representing a range of the value related to the ZoD.

[0053] Accordingly, it is possible to prevent degradation of the beam alignment level between the UE and the base station caused by different interpretations / determinations of the value for determining the expected angle related to the PRS and the range of the expected angle in aspects of the UE and the location server (and / or the base station), respectively.

[0054] Also, according to the above-described embodiments, it is possible to guarantee the effectiveness of the signaling performed for improving the accuracy of the positioning method, i.e., the signaling performed for configuring the angle related to the PRS.

[0055] Effects obtainable from the disclosure are not limited to what has been described above with reference to the effects. Also, other technical effects which are not mentioned above can be derived from the following description by those having ordinary skill in the art to which the disclosure pertains. BRIEF DESCRIPTION OF DRAWINGS

[0056] The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the detailed description, illustrate embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.

[0057] Figure 1 FIG. 1 is a diagram illustrating an example of an overall system structure of NR to which the method proposed in the disclosure can be applied.

[0058] Figure 2 FIG. 2 illustrates a relationship between an uplink frame and a downlink frame in a wireless communication system to which the method proposed in the disclosure can be applied.

[0059] Figure 3 FIG. 3 illustrates an example of a frame structure in an NR system.

[0060] Figure 4 FIG. 4 illustrates an example of a resource grid supported by a wireless communication system to which the method proposed in the disclosure can be applied.

[0061] Figure 5An example of a resource grid for each antenna port and parameter set to which the methods proposed in this disclosure can be applied is illustrated.

[0062] Figure 6 The diagram illustrates the physical channels and general signal transmission used in a 3GPP system.

[0063] Figure 7 This is a diagram illustrating an example of a positioning protocol configuration used to measure the location of a user equipment (UE).

[0064] Figure 8 This is a diagram illustrating an example of the architecture of a system used to measure the location of a UE.

[0065] Figure 9 This is a diagram illustrating an example of the process used to measure the position of a UE.

[0066] Figure 10 This is a diagram illustrating an example of a protocol layer used to support LPP message transmission.

[0067] Figure 11 This is a diagram illustrating an example of a protocol layer used to support NRPPa transport.

[0068] Figure 12 This is a diagram illustrating an example of the OTDOA positioning measurement method.

[0069] Figure 13A and Figure 13B This is a diagram illustrating an example of a multi-RTT positioning measurement method.

[0070] Figure 14 and Figure 15 This is a diagram illustrating the angles and angle ranges used for positioning according to embodiments of the present disclosure.

[0071] Figure 16 This is a diagram illustrating the operation of the UE, TRP, and LMF to which the methods proposed in this disclosure can be applied.

[0072] Figure 17 This is a flowchart used to explain the operation of each UE, TRP, and LMF to which the methods proposed in this disclosure can be applied.

[0073] Figure 18 This is a flowchart illustrating a method for a UE to transmit information about PRS measurements in a wireless communication system according to an embodiment of the present disclosure.

[0074] Figure 19 This is a flowchart illustrating a method for a location server to receive information about PRS measurements in a wireless communication system according to another embodiment of the present disclosure.

[0075] Figure 20 FIG. illustrates a communication system 1 to which the present disclosure is applied.

[0076] Figure 21 FIG. illustrates a wireless device suitable for the present disclosure.

[0077] Figure 22 FIG. illustrates a signal processing circuit to which the present disclosure is applied.

[0078] Figure 23 FIG. illustrates another example of a wireless device to which the present disclosure is applied.

[0079] Figure 24 FIG. illustrates a handheld device to which the present disclosure is applied. DETAILED DESCRIPTION

[0080] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the attached drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the disclosure in unnecessary detail. The following detailed description is, therefore, not to be considered in a limiting sense as the sole intended means for carrying out the present disclosure. The detailed description includes specific details for the purpose of providing a complete understanding of the Figure 1 The detailed description of the present disclosure is presented for the purpose of describing exemplary embodiments of the present disclosure, and not for the purpose of describing the only embodiments for carrying out the present disclosure. The detailed description includes details for the purpose of providing a complete understanding of the present disclosure. However, it will be apparent to those skilled in the art that the present disclosure can be carried out without the details.

[0081] In some cases, in order to prevent the concept of the present disclosure from being unclear, known structures or devices can be omitted, or known structures and devices can be shown in the form of a block diagram focusing on the core function of each structure and device.

[0082] Hereinafter, downlink (DL) refers to communication from a base station to a terminal, and uplink (UL) refers to communication from a terminal to a base station. In the downlink, a transmitter can be part of a base station, and a receiver can be part of a terminal. In the uplink, a transmitter can be part of a terminal, and a receiver can be part of a base station. A base station can be expressed as a first communication device, and a terminal can be expressed as a second communication device. A base station (BS) can be replaced with the following terms including: a fixed station, a Node B, an evolved-Node B (eNB), a next-generation Node B (gNB), a base transceiver system (BTS), an access point (AP), a network (5G network), an AI system, a road side unit (RSU), a vehicle, a robot, an unmanned aerial vehicle (UAV), an AR (augmented reality) device, a VR (virtual reality) device, etc. Also, a terminal can be fixed or mobile, and can be replaced with the following terms including: a user equipment (UE), a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), a wireless terminal (WT), a machine-type communication (MTC) device, a machine-to-machine (M2M) device, and a device-to-device (D2D) device, a vehicle, a robot, an AI module, an unmanned aerial vehicle (UAV), an AR (augmented reality) device, a VR (virtual reality) device, etc.

[0083] The following techniques can be used in various radio access systems including CDMA, FDMA, TDMA, OFDMA, SC-FDMA, etc. CDMA can be implemented by radio technology such as universal terrestrial radio access (UTRA) or CDMA2000. TDMA can be implemented by radio technology such as global system for mobile communications (GSM) / general packet radio service (GPRS) / enhanced data rates for GSM evolution (EDGE). OFDMA can be implemented as radio technology such as institute of electrical and electronics engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, evolved-UTRA (E-UTRA) etc. UTRA is part of universal mobile telecommunication system (UMTS). Third generation partnership project (3GPP) long term evolution (LTE) is part of evolved-UMTS (E-UMTS) using E-UTRA, and LTE-A / LTE-A pro 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 / LTE-A pro.

[0084] For clarity of description, the technical spirit of the disclosure is described based on a 3GPP communication system (e.g., LTE-A or NR), but the technical spirit of the disclosure is not limited thereto. LTE refers to technologies after Release 8 of 3GPP TS 36.xxx. In detail, LTE technologies after Release 10 of 3GPP TS 36.xxx are referred to as LTE-A, and LTE technologies after Release 13 of 3GPP TS 36.xxx are referred to as LTE-A Pro. 3GPP NR refers to technologies after Release 15 of TS 38.xxx. LTE / NR can be referred to as a 3GPP system. "xxx" refers to a detailed number of a standard document. LTE / NR can be collectively referred to as a 3GPP system. Matters disclosed in standard documents published before the disclosure can be referred to for background technologies, terms, abbreviations, etc. used to describe the disclosure. For example, the following documents can be referred to.

[0085] 3GPP LTE

[0086] - 36.211: Physical channels and modulation

[0087] - 36.212: Multiplexing and channel coding

[0088] - 36.213: Physical layer procedures

[0089] - 36.300: Overall description

[0090] - 36.331: Radio Resource Control (RRC)

[0091] 3GPP NR

[0092] - 38.211: Physical channels and modulation

[0093] - 38.212: Multiplexing and channel coding

[0094] - 38.213: Physical layer procedures for control

[0095] - 38.214: Physical layer procedures for data

[0096] - 38.300: NR and NG-RAN; Overall description

[0097] - 36.331: Radio Resource Control (RRC) protocol specification

[0098] As more communication devices require greater communication capacity, there is a demand for improved mobile broadband communication compared to existing radio access technologies (RATs). In addition, massive machine type communications (MTC), which provide various services anytime anywhere by connecting many devices and objects, is one of major issues to be considered in the next-generation communication. Also, communication system design considering services / UEs sensitive to reliability and latency is being discussed. As such, introduction of next-generation radio access technologies considering enhanced mobile broadband communication (eMBB), massive MTC (mMTC), ultra-reliability and low latency communication (URLLC) is discussed, and in the present disclosure, for convenience, the technology will be referred to as NR. NR is an expression indicating an example of a 5G radio access technology (RAT).

[0099] In a new RAT system including NR, an OFDM transmission scheme or a similar transmission scheme is used. The new RAT system can follow OFDM parameters different from those of LTE. Alternatively, the new RAT system can follow the parameter set of the conventional LTE / LTE-A as it is or have a larger system bandwidth (e.g., 100 MHz). Alternatively, one cell can support multiple parameter sets. In other words, UEs operating with different parameter sets can coexist in one cell.

[0100] A parameter set corresponds to one subcarrier spacing in a frequency domain. Different parameter sets can be defined by scaling a reference subcarrier spacing by an integer N.

[0101] Definitions of terms

[0102] eLTE eNB: The eLTE eNB is an evolution of an eNB that supports connectivity to both EPC and NGC.

[0103] gNB: A node that supports NR as well as connectivity to NGC.

[0104] New RAN: A radio access network that supports NR or E-UTRA or interfaces with NGC.

[0105] Network Slice: Network slicing refers to a network customized by an operator for a specific market scenario, providing optimized solutions for requirements in end-to-end range.

[0106] Network Function: A network function is a logical node in a network architecture, having a well-defined external interface and a well-defined functional behavior.

[0107] NG-C: Control plane interface used on the NG2 reference point between the new RAN and the NGC.

[0108] NG-U: User plane interface used on NG3 reference point between new RAN and NGC.

[0109] Non-standalone NR: A deployment configuration in which a gNB requires a LTE eNB as an anchor for control plane connectivity to EPC or an eLTE eNB as an anchor for control plane connectivity to NGC.

[0110] Non-standalone E-UTRA: A deployment configuration in which an eLTE eNB requires a gNB as an anchor for control plane connectivity to NGC.

[0111] User plane gateway: Termination point of NG-U interface.

[0112] System overview

[0113] Figure 1 An example of the overall system structure of NR to which the method proposed in the present disclosure is applicable is illustrated.

[0114] Referring to Figure 1 , the NG-RAN is composed of multiple gNBs to provide NG-RA user plane (new AS sublayer / PDCP / RLC / MAC / PHY) and control plane (RRC) protocol termination for user equipment (UE).

[0115] The gNBs are interconnected through the Xn interface.

[0116] The gNBs are also connected to the NGC through the NG interface.

[0117] More specifically, the gNBs are connected to the access and mobility management function (AMF) through the N2 interface and to the user plane function (UPF) through the N3 interface.

[0118] New RAT (NR) numerologies and frame structure

[0119] In the NR system, a plurality of numerologies can be supported. The numerology can be defined by a subcarrier spacing and a CP (cyclic prefix) overhead. A plurality of subcarriers can be derived by scaling a basic subcarrier spacing by an integer N (or μ). Also, although it is assumed that a very low subcarrier spacing is not used at a very high subcarrier frequency, the numerology to be used can be selected independently of a frequency band.

[0120] Also, in the NR system, a plurality of frame structures according to a plurality of numerologies can be supported.

[0121] Hereinafter, orthogonal frequency division multiplexing (OFDM) numerologies and frame structures that can be considered in the NR system will be described.

[0122] A plurality of OFDM numerology sets supported in the NR system can be defined as in Table 1.

[0123] [Table 1]

[0124] Cyclic prefix △f = 2 μ · 15 [kHz]] Normal 0 15 Normal 1 30 Normal, extended 2 60 Normal 3 120 Normal 4 240 Frequency range name

[0125] NR supports a plurality of numerologies (or subcarrier spacings (SCSs)) to support various 5G services. For example, if the SCS is 15 kHz, NR supports a wide area in a typical cellular band. If the SCS is 30 kHz / 60 kHz, NR supports dense cities, lower latency, and wider carrier bandwidth. If the SCS is 60 kHz or higher than that, NR supports a bandwidth greater than 24.25 GHz to overcome phase noise.

[0126] NR bands are defined as frequency ranges of two types, FR1 and FR2. FR1 and FR2 can be configured as shown in Table 1 below. In addition, FR2 can refer to millimeter wave (mmW).

[0127] [Table 2]

[0128] Corresponding frequency range Subcarrier spacing FR1 410 MHz - 7125 MHz 15, 30, 60 kHz FR2 24250 MHz - 52600 MHz 60, 120, 240 kHz Figure 2

[0129] Regarding a frame structure in the NR system, the size of each field in the time domain is expressed as a multiple of a time unit of T s = 1 / (△f max ·N f ), where △f max = 480·10 3 and N f = 4096. Downlink and uplink transmissions are composed of radio frames having a period of T f =(△f max N f / 100)·T s = 10 ms. Here, a radio frame is composed of ten subframes, each having a period of T sf =(△f max N f / 1000)·T s = 1 ms. In this case, there can be one set of frames for uplink and one set of frames for downlink.

[0130] Figure 2 FIG. illustrates a relationship between an uplink frame and a downlink frame in a wireless communication system to which the method proposed in the disclosure is applicable.

[0131] As illustrated in FIG., an uplink frame number i for transmission from a user equipment (UE) should be T Figure 3 ms before the start of a downlink frame of the UE.TA = N TA T s Start.

[0132] With respect to a numerology μ, slots are numbered in ascending order within a subframe and in ascending order within a radio frame . One slot consists of consecutive OFDM symbols and is determined according to the numerology used and the slot configuration. In the subframe, the start of a slot is aligned in time with the start of a slot .

[0133] Not all UEs are capable of transmitting and receiving at the same time, and this means that not all OFDM symbols in a downlink slot or an uplink slot can be used.

[0134] Table 3 represents the number of OFDM symbols per slot in normal CP the number of slots per radio frame and the number of slots per subframe Table 4 represents the number of OFDM symbols per slot in extended CP, the number of slots per radio frame, and the number of slots per subframe.

[0135] [Table 3]

[0136]

[0137] [Table 4]

[0138]

[0139] Figure 3 FIG. illustrates an example of a frame structure in an NR system. Figure 3 This is only for the convenience of explanation and does not limit the scope of the present disclosure.

[0140] In Table 4, in the case of μ = 2, that is, as an example in which a subcarrier spacing (SCS) is 60 kHz, referring to Table 3, one subframe (or frame) can include four slots, and Figure 4 one subframe = {1, 2, 4} slots shown in μ = 2, for example, the number of slots that can be included in one subframe is defined as in Table 3.

[0141] In addition, a mini-slot can consist of 2, 4, or 7 symbols, or can consist of more or less symbols.

[0142] With respect to a physical resource in an NR system, an antenna port, a resource grid, a resource element, a resource block, a carrier part, etc. can be considered.

[0143] Hereinafter, the above-described physical resources which can be considered in the NR system are described in more detail.

[0144] First, regarding the antenna port, the antenna port is defined such that a channel through which a symbol of the antenna port is transmitted can be inferred from a channel through which another symbol on the same antenna port is transmitted. When a large-scale property of a channel through which a symbol on one antenna port is transmitted can be inferred from a channel through which a symbol on another antenna port is transmitted, the two antenna ports can be regarded as a quasi co-location or quasi co-location (QC / QCL) relationship. In this case, the large-scale property includes at least one of the following: delay spread, Doppler spread, frequency shift, average received power, and received timing.

[0145] Figure 4 An example of a resource grid supported in a wireless communication system to which the method proposed in the disclosure is applicable is illustrated.

[0146] Reference Figure 5 The resource grid consists of subcarriers in the frequency domain, and each subframe consists of μ OFDM symbols, but the disclosure is not limited thereto.

[0147] In the NR system, a signal transmitted is described by one or more resource grids consisting of subcarriers and OFDM symbols, where indicates the maximum transmission bandwidth, and can be changed not only between numerologies but also between uplink and downlink.

[0148] In this case, as illustrated in Figure 5 , one resource grid can be configured for each numerology μ and antenna port p.

[0149] Physical channels and general signal transmission An example of a resource grid for each antenna port and numerology to which the method proposed in the disclosure is applicable is illustrated.

[0150] Each element of the resource grid for the numerology μ and the antenna port p is referred to as a resource element, and is uniquely identified by an index pair , where is an index in the frequency domain, and refers to the position of a symbol in a subframe. The index pair is used to refer to a resource element in a slot, where

[0151] The resource element corresponding to a complex value If there is no risk of confusion, or when no specific antenna port or parameter set is specified, the indices p and μ can be dropped, and as a result, the complex value can be or

[0152] In addition, a physical resource block is defined as consecutive subcarriers in the frequency domain.

[0153] Point A is used as a common reference point for the resource block grid, and can be obtained as follows.

[0154] - offsetToPointA for PCell downlink indicates the frequency offset between point A and the lowest subcarrier of the lowest resource block that overlaps with the SS / PBCH block used for initial cell selection by the UE and is expressed in units of resource blocks, with a subcarrier spacing of 15 kHz assumed for FR1 and a subcarrier spacing of 60 kHz assumed for FR2;

[0155] - absoluteFrequencyPointA indicates the frequency location of point A, expressed in absolute radio frequency channel number (ARFCN).

[0156] The common resource blocks are numbered from 0 upwards in the frequency domain for a subcarrier spacing configuration μ.

[0157] The center of subcarrier 0 of common resource block 0 for subcarrier spacing configuration μ coincides with "point A". The common resource block number in the frequency domain and the resource element (k, l) for subcarrier spacing configuration μ.

[0158] [Equation 1]

[0159]

[0160] Here, k can be defined with respect to point A such that k = 0 corresponds to the subcarrier centered at point A. The physical resource blocks are defined within a bandwidth part (BWP) and numbered from 0 to where i is the number of the BWP. The physical resource block n PRB in the BWP i CRB The relationship between the common resource block n

[0161] [Equation 2]

[0162]

[0163] Here, may be the common resource block at which the BWP starts with respect to the common resource block 0.

[0164] Figure 6

[0165] Beam management (BM) Physical channels and general signal transmission used in the 3GPP system are illustrated. In a wireless communication system, a UE receives information from an eNB through a downlink (DL), and transmits information to the eNB through an uplink (UL). The information that the eNB and the UE transmit and receive includes data and various control information, and depending on the type / use of the information that the eNB and the UE transmit and receive, there are various physical channels.

[0166] When the UE is powered on or newly enters a cell, the UE performs an initial cell search operation (S601), such as synchronization with the eNB. To this end, the UE can receive a primary synchronization signal (PSS) and a (secondary synchronization signal (SSS)) from the eNB, and synchronize with the eNB and acquire information such as a cell ID. Thereafter, the UE can receive a physical broadcast channel (PBCH) from the eNB and acquire in-cell broadcast information. Meanwhile, the UE receives a downlink reference signal (DL RS) in the initial cell search step to check a downlink channel state.

[0167] The UE that completes the initial cell search acquires more specific system information by receiving a physical downlink control channel (PDCCH) and a physical downlink shared channel (PDSCH) according to information loaded on the PDCCH (S602).

[0168] Meanwhile, when there is no radio resource for signal transmission that first accesses the eNB or is accessed, the UE can perform a random access procedure (RACH) to the eNB (S603 to S606). To this end, the UE can transmit a specific sequence with a preamble through a physical random access channel (PRACH) (S603 and S605), and receive a response message (random access response (RAR) message) for the preamble through a PDCCH and a corresponding PDSCH. In the case of a contention-based RACH, a contention resolution procedure can be additionally performed (S606).

[0169] Then, the UE that performs the above-described procedure can perform PDCCH / PDSCH reception (S607) and physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) transmission (S608) as a general uplink / downlink signal transmission procedure. In particular, the UE can receive downlink control information (DCI) through a PDCCH. Here, the DCI can include control information such as resource allocation information for the UE, and a format can be differently applied according to a use purpose.

[0170] Meanwhile, control information transmitted by the UE to the eNB through the uplink or received by the UE from the eNB can include a downlink / uplink ACK / NACK signal, a channel quality indicator (CQI), a precoding matrix index (PMI), a rank indicator (RI), etc. The UE can transmit control information such as CQI / PMI / RI, etc. through the PUSCH and / or the PUCCH.

[0171] DL beam management (DL

[0172] As a BM procedure for acquiring and maintaining a set of base stations (e.g., gNB, TRP, etc.) and / or a layer 1 (L1) / layer 2 (L2) procedure of a terminal (e.g., UE) beam that can be used for downlink (DL) and uplink (UL) transmission / reception, the BM procedure can include the following procedures and terms.

[0173] - Beam measurement: an operation of measuring a characteristic of a beamformed signal received by the eNB or the UE.

[0174] - Beam determination: an operation of selecting a transmit (Tx) beam / receive (Rx) beam of the eNB or the UE by the eNB or the UE.

[0175] - Beam sweeping: an operation of covering a spatial region using a transmission and / or reception beam at a time interval in a predetermined scheme.

[0176] - Beam reporting: an operation in which the UE reports information of a beamformed signal based on beam measurement.

[0177] The BM procedure can be divided into (1) a DL BM procedure using a synchronization signal (SS) / physical broadcast channel (PBCH) block or a CSI-RS and (2) an UL BM procedure using a sounding reference signal (SRS). In addition, each BM procedure can include Tx beam sweeping for determining a Tx beam and Rx beam sweeping for determining a Rx beam.

[0178] BM) Positioning

[0179] The DL BM procedure can include (1) transmission of a beamformed DL reference signal (RS) (e.g., a CSI-RS or an SS block (SSB)) of the eNB and (2) beam reporting of the UE.

[0180] Here, the beam reporting preferred DL RS identifier (ID) and L1-reference signal received power (RSRP).

[0181] The DL RS ID can be an SSB resource indicator (SSBRI) or a CSI-RS resource indicator (CRI).

[0182] In the following, matters related to the definition of the TRP mentioned in the present specification will be described in detail.

[0183] The base station described in the present disclosure can be a general term of an object for transmitting and receiving data to and from a UE. For example, the base station described herein can be a concept including one or more transmission points (TPs), one or more transmission and reception points (TRPs), or the like. For example, the plurality of TPs and / or the plurality of TRPs described herein can be included in one base station or included in a plurality of base stations. Also, the TP and / or the TRP can include a panel, a transmission and reception unit, or the like of a base station.

[0184] Also, the TRP described in the present disclosure refers to an antenna array having one or more antenna elements that can be used in a network located at a specific geographical location in a specific area. Although the present disclosure is described with respect to the "TRP" for convenience of explanation, the TRP can be replaced with a base station, a transmission point (TP), a cell (e.g., a macro cell / small cell / pico cell, or the like), an antenna array, or a panel, and can be understood and applied as such.

[0185] Hereinafter, matters related to positioning in a wireless communication system will be described in detail.

[0186] Table 5 below shows definitions of terms used in relation to positioning.

[0187] [table 5]

[0188]

[0189]

[0190] The following shows definitions of abbreviations used in relation to the above-described positioning.

[0191] 5GS: 5G system

[0192] AoA: Angle of Arrival

[0193] AP: Access Point

[0194] BDS: BeiDou Navigation Satellite System

[0195] BSSID: Basic Service Set Identifier

[0196] CID: Cell-ID (positioning method)

[0197] E-SMLC: Enhanced Serving Mobile Location Center

[0198] E-CID: Enhanced Cell-ID (positioning method)

[0199] ECEF: Earth-Centered, Earth-Fixed

[0200] ECI: Earth-Centered Inertial

[0201] EGNOS: European Geostationary Navigation Overlay Service

[0202] E-UTRAN: Evolved Universal Terrestrial Radio Access Network

[0203] GAGAN: GPS Aided Geo Augmented Navigation

[0204] GLONASS: Global Navigation Satellite System

[0205] GMLC: Gateway Mobile Location Center

[0206] GNSS: Global Navigation Satellite System

[0207] GPS: Global Positioning System

[0208] HESSID: Homogeneous Extended Service Set Identifier

[0209] LCS: Location Service

[0210] LMF: Location Management Function

[0211] LPP: LTE Positioning Protocol

[0212] MBS: Metropolitan Beacon System

[0213] MO-LR: Mobile Originated Location Request

[0214] MT-LR: Mobile Terminated Location Request

[0215] NG-C: NG Control Plane

[0216] NG-AP: NG Application Protocol

[0217] NI-LR: Network Initiated Location Request

[0218] NRPPA: NR Positioning Protocol A

[0219] OTDOA: Observed Time Difference Of Arrival

[0220] PDU: Protocol Data Unit

[0221] PRS: Positioning Reference Signal

[0222] QZSS: Quasi-Zenith Satellite System

[0223] RRM: Radio Resource Management

[0224] RSSI: Received Signal Strength Indicator

[0225] RSTD: Reference Signal Time Difference / Relative Signal Time Difference

[0226] SBAS: Satellite Based Augmentation System

[0227] SET: SUPL Enabled Terminal

[0228] SLP: SUPL Location Platform

[0229] SSID: Service Set Identifier

[0230] SUPL: Secure User Plane Location

[0231] TADV: Timing Advance

[0232] TBS: Terrestrial Beacon System

[0233] TOA: Time of Arrival

[0234] TP: Transmission Point (TRP: Transmission and Reception Point)

[0235] UE: User Equipment

[0236] WAAS: Wide Area Augmentation System

[0237] WGS-84: World Geodetic System 1984

[0238] WLAN: Wireless Local Area Network

[0239] Positioning protocol configuration

[0240] Positioning can mean determining a geographical position and / or a speed of a UE by measuring radio signals. Position information can be requested by a client (e.g., an application) related to the UE and reported to the client. In addition, the position information can be included in a core network or can be requested by a client connected to the core network. The position information can be reported in a standard format such as cell-based coordinates or geographical coordinates, and in this case, an estimated error value of a position (bearing) and a speed of the UE and / or a positioning measurement method used for positioning can be reported together.

[0241] Figure 7

[0242] Figure 7 FIG. 1 is a diagram illustrating an example of a positioning protocol configuration for measuring a position of a user equipment (UE).

[0243] Reference PRS mappingLPP 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) based on position-related measurements obtained from one or more reference sources. The target device and the location server can exchange measurements and / or location information over LPP based on signal A and / or signal B.

[0244] 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.

[0245] The functions provided by the NRPPa protocol can include the following functions.

[0246] - E-CID location information transfer: through this function, location information can be exchanged between a reference source and an LMF for E-CID positioning purposes.

[0247] - OTDOA information transfer: through this function, information can be exchanged between a reference source and an LMF for OTDOA positioning purposes.

[0248] - Report general error cases: through this function, general error cases for which no error message is defined for each function can be reported.

[0249] PRS reception procedure

[0250] For positioning, a positioning reference signal (PRS) can be used. PRS is a reference signal for position estimation of a UE.

[0251] The PRS mapping in a wireless communication system to which embodiments of the disclosure can be applied can be performed based on the following Table 6.

[0252] [Table 6]

[0253]

[0254]

[0255]

[0256]

[0257] Positioning architecture

[0258] The PRS reception procedure of a UE in a wireless communication system to which embodiments of the disclosure can be applied can be performed based on the following Table 7.

[0259] [Table 7]

[0260]

[0261]

[0262]

[0263]

[0264]

[0265]

[0266] Figure 8

[0267] Figure 8 FIG. 1 is a diagram illustrating an example of an architecture of a system for measuring a location of a UE.

[0268] Referring to Positioning measurement procedure , an AMF (core access and mobility management function) can receive a request for a location service related to a specific target UE from another entity such as a GMLC (gateway mobile location center), or can decide to start a location service on behalf of a specific target UE in the AMF itself. Then, the AMF transmits a location service request to an LMF (location management function). The LMF receiving the location service request can process the location service request and return a processing result including an estimated location of the UE to the AMF. On the other hand, based on receiving a location service request from another entity different from the AMF such as a GMLC, the AMF can transmit a processing result received from the LMF to another entity.

[0269] A new generation evolved NB (ng-eNB) and a gNB can be network elements of an NG-RAN, which can provide measurement results for location tracking, and measure radio signals for a target UE and transmit results to an LMF. In addition, the ng-eNB can control some TP (transmission point) such as a remote radio head, or a PRS-only TP supporting a PRS-based beacon system for E-UTRA.

[0270] An LMF can be connected to an enhanced serving mobile location center (E-SMLC), and the E-SMLC can enable the LMF to access an E-UTRAN. For example, the E-SMLC can enable the LMF to support observed time difference of arrival (OTDOA) as one of E-UTRAN positioning measurement methods based on downlink measurements obtained by a target UE through signals transmitted from eNBs and / or TPs dedicated for PRS in an E-UTRAN.

[0271] Simultaneously, the LMF can connect to the SUPL (Secure User Plane Location) platform (SLP). The LMF can support and manage different location services for the target UE. The LMF can interact with the serving ng-eNB or serving gNB for the target UE to obtain the UE's location measurements. To locate the target UE, the LMF can determine the location measurement method based on the Location Service (LCS) client type, required QoS (Quality of Service), UE location capabilities, and the location capabilities of the gNB and ng-eNB, and apply this location measurement method to the serving gNB and / or serving ng-eNB. The LMF can then determine the orientation estimate for the target UE, as well as additional information such as the accuracy of the orientation estimate and velocity. The SLP is the SUPL (Secure User Plane Location) entity responsible for location through the user plane.

[0272] The UE can measure its location by utilizing downlink reference signals transmitted from NG-RAN and E-UTRAN. In this case, the downlink reference signals transmitted from NG-RAN and E-UTRAN to the UE may include SS / PBCH blocks, CSI-RS, and / or PRS, etc., and whether any downlink reference signals are used to measure the UE's location may depend on the configuration of LMF / E-SMLC / ng-eNB / E-UTRAN, etc. Furthermore, the UE's location can be measured using RAT-independent methods using different GNSS (Global Navigation Satellite System), TBS (Terrestrial Beacon System), WLAN access points, Bluetooth beacons, and sensors built into the UE (e.g., atmospheric pressure sensors). The UE may include an LCS application and access the LCS application through communication with the network to which the UE is connected or other applications included in the UE. The LCS application may include the measurement and calculation functions required to determine the UE's location. For example, the UE may include independent positioning capabilities such as GPS and may report the UE's location independently of NG-RAN transmissions. Independently acquired positioning information can be used as supplementary information to positioning information acquired from the network.

[0273] Figure 9

[0274] Figure 9 This is a diagram illustrating an example of the process used to measure the position of a UE.

[0275] When the UE is in CM-IDLE (Connection Management-IDLE) state, when the AMF receives a location service request, the AMF can establish a signaling connection with the UE and request the network to trigger a service to allocate a specific service gNB or ng-eNB. Figure 8 This operation process has been omitted. That is, in Figure 8In this case, it can be assumed that the UE is in a connected mode. However, the signaling connection can be released by the NG-RAN during the positioning procedure due to reasons such as signaling and data inactivity.

[0276] Referring to Figure 9 and Figure 9 In detail, looking at the operation procedure of the network for measuring the location of the UE, in step 1a, a 5GC entity such as a GMLC can request a location service for measuring the location of a target UE from an AMF. However, even if the GMLC does not request a location service, based on step 1b, the serving AMF can determine that a location service is necessary for measuring the location of the target UE. For example, in order to measure the location of a UE for an emergency call, the serving AMF can decide to directly perform a location service.

[0277] Then, based on step 2, the AMF can transmit a location service request to an LMF, and based on step 3a, the LMF can initiate a location procedure for obtaining location measurement data or location measurement assistance data together with a serving ng-eNB and a serving gNB. For example, the LMF can request the NG-RAN for location-related information related to one or more UEs, and indicate the type of required location information and the associated QoS. Then, in response to the request, the NG-RAN can transmit the location-related information to the LMF. In this case, based on the method for determining the location by the request is E-CID, the NG-RAN can transmit additional location-related information to the LMF through one or more NRPPa messages. Here, the "location-related information" can mean all values for location calculation such as actual location estimation information and radio measurements or location measurements, etc. In addition, the protocol used in step 3a can be the NRPPa protocol, which will be described later.

[0278] In addition, based on step 3b, the LMF can initiate a location procedure for downlink positioning together with a UE. For example, the LMF can transmit location assistance data to the UE, or obtain a location estimate or a location measurement. For example, in step 3b, a capability transfer procedure can be performed. Specifically, the LMF can request capability information from the UE, and the UE can transmit the capability information to the LMF. In this case, the capability information can include information on the location measurement methods that the LMF or the UE can support, information on various aspects of a specific location measurement method such as various types of assistance data for A-GNSS, and information on common characteristics not limited to any one location measurement method such as the ability to handle multiple LPP transactions, etc. Meanwhile, in some cases, even if the LMF does not request the capability information from the UE, the UE can provide the capability information to the LMF.

[0279] As another example, the location assistance data transfer procedure can be performed in step 3b. Specifically, the UE can request the location assistance data from the LMF, and can indicate the specific location assistance data required to the LMF. Then, the LMF can deliver the location assistance data corresponding thereto to the UE, and additionally can transmit additional assistance data to the UE through one or more additional LPP messages. On the other hand, the location assistance data transmitted from the LMF to the UE can be transmitted through a unicast method, and in some cases, the LMF can transmit the location assistance data and / or additional assistance data to the UE without the UE requesting the assistance data to the LMF.

[0280] As another example, the location information transfer procedure can be performed in step 3b. Specifically, the LMF can request the location related information related to the UE from the UE, and can indicate the type of the location information required and the associated QoS. Then, in response to the request, the UE can transmit the location related information to the LMF. In this case, the UE can additionally transmit additional location related information to the LMF through one or more LPP messages. Here, the "location related information" can mean all values for the location calculation such as actual location estimate information and wireless measurements or location measurements, etc., and representatively, there can be a Reference Signal Time Difference (RSTD) value measured by the UE based on the downlink reference signals transmitted to the UE from a plurality of NG-RANs and / or E-UTRANs. Similar to the above, the UE can transmit the location related information to the LMF even without the request from the LMF.

[0281] On the other hand, the procedures performed in step 3b described above can be independently performed, but can also be sequentially performed. In general, step 3b is performed in the order of the capability transfer procedure, the assistance data transfer procedure, and the location information transfer procedure, but is not limited to the order. In other words, step 3b is not limited to a specific order in order to improve the flexibility of the position measurement. For example, the UE can request the location assistance data at any time to perform the position measurement request that the LMF has requested. In addition, the LMF can also request the location information such as the position measurement or the location estimate at any time if the location information delivered by the UE does not satisfy the required QoS. Similarly, the UE can transmit the capability information to the LMF at any time when the UE does not perform the measurement for the location estimate.

[0282] In addition, when an error occurs in the information or the request exchanged between the LMF and the UE in step 3b, an error message can be transmitted / received, and a stop message can be transmitted / received for stopping the position measurement.

[0283] On the other hand, the protocol used in step 3b can be an LPP protocol, which will be described later.

[0284] Meanwhile, step 3b can be additionally performed after step 3a is performed, or can be performed instead of step 3a.

[0285] In step 4, the LMF can provide a location service response to the AMF. In addition, the location service response can include information about whether the location estimation of the UE is successful and the location estimation of the UE. Thereafter, if the procedure of Figure 9 the procedure is initiated by step 1a, the AMF can deliver the location service response to a 5GC entity such as a GMLC, and if LTE positioning protocol (LPP) the procedure is initiated by step 1b, the AMF can use the location service response to provide a location service related to an emergency call or the like.

[0286] In the location measurement protocol described below, the definition of some terms can be based on Table 8 below.

[0287] [Table 8]

[0288]

[0289] Figure 10

[0290] Figure 10 is a diagram illustrating an example of protocol layers for supporting LPP message transmission.

[0291] Referring to LPP procedures for UE positioning , an LPP PDU can be transmitted between a MAF and a UE through a NAS PDU. LPP can terminate a connection between a target device (e.g., a UE in a control plane or a SUPL enabled terminal (SET) in a user plane) and a location server (e.g., an LMF in a control plane or an SLP in a user plane). LPP messages can be delivered in the form of a transparent PDU through an intermediate network interface using an appropriate protocol (such as NGAP through an NG-C interface, NAS / RRC through LTE-Uu and NR-Uu interfaces). The LPP protocol enables positioning for NR and LTE based on various positioning methods.

[0292] For example, a target device and a location server can exchange capability information, assistance data for positioning, and / or location information with each other through the LPP protocol. In addition, error information exchange and / or an instruction to stop an LPP procedure can be performed through an LPP message.

[0293] NR positioning protocol A (NRPPa)

[0294] Signal transmission / reception operations based on the LPP protocol to which the method proposed in the present disclosure can be applied can be performed based on Table 9 below.

[0295] [Table 9]

[0296]

[0297]

[0298]

[0299] Figure 11

[0300] Figure 11 is a diagram illustrating an example of a protocol layer for supporting NRPPa transmission. Specifically, NRPPa procedures illustrates a protocol layer for supporting transmission of NRPPa PDU (NR Positioning Protocol a Protocol Data Unit).

[0301] NRPPa can be used for information exchange between an NG-RAN node and an LMF. Specifically, NRPPa can be used to exchange E-CID for measurements, data for supporting OTDOA positioning method, cell ID and cell location ID for NR Cell ID positioning method, etc. transmitted from an ng-eNB to an LMF. Even if there is no information about an associated NRPPa transaction, an AMF can route an NRPPa PDU over an NG-C interface based on a routing ID of an associated LMF.

[0302] Procedures of the NRPPa protocol for location and data collection can be divided into two types. The first type is a UE-associated procedure for delivering information about a specific UE (e.g., location measurement information, etc.), and the second type is a non-UE-associated procedure for delivering information applicable to an NG-RAN node and related TPs (e.g., gNB / ng-eNG / TP timing information, etc.). Both types of procedures can be supported independently or simultaneously.

[0303] Positioning measurement methods

[0304] Signal transmission / reception operations based on the NRPPa protocol to which the embodiments presented in the disclosure can be applied can be performed based on Table 10 below.

[0305] [Table 10]

[0306]

[0307]

[0308] In the disclosure, messages exchanged (transmitted and received) between a UE (target device) / location server for positioning and configurations related to the messages can be based on Table 11 below.

[0309] [Table 11]

[0310]

[0311]

[0312]

[0313]

[0314]

[0315]

[0316]

[0317]

[0318]

[0319]

[0320]

[0321]

[0322]

[0323]

[0324] OTDOA (Observed Time Difference of Arrival) The positioning measurement methods supported by the NG-RAN can include GNSS, OTDOA, E-CID (Enhanced Cell ID), Multi-RTT (Round Trip Time) / Multi-cell RTT, barometric sensor positioning, WLAN positioning, Bluetooth positioning, and TBS (Terrestrial Beacon System), UTDOA (Uplink Time Difference of Arrival), etc. Among the positioning measurement methods, any one of the positioning measurement methods can be used to measure the position of the UE, but two or more positioning measurement methods can also be used to measure the position of the UE.

[0325] Among the positioning measurement methods described below, the definition of some terms can be based on Table 12 below.

[0326] [Table 12]

[0327]

[0328]

[0329]

[0330]

[0331]

[0332]

[0333] Figure 12

[0334] E-CID (Enhanced Cell ID) FIG. 1 is a diagram illustrating an example of an OTDOA positioning measurement method.

[0335] In the OTDOA positioning measurement method, the timing of the measurements of the downlink signals received by the UE from multiple TPs including eNBs, ng-eNBs, and PRS-only TPs is used. The UE measures the timing of the received downlink signals by using the location assistance data received from a location server. In addition, the location of the UE can be determined based on these measurements and the geographic coordinates of the neighboring TPs.

[0336] A UE connected to a gNB can request measurement gaps for OTDOA measurements from a TP. If the UE does not identify 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 for performing a Reference Signal Time Difference (RSTD) measurement.

[0337] Here, the RSTD can be defined based on the minimum relative time difference between the boundaries of two subframes received from a reference cell and a 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 closest to the start time of the subframe received from the measurement cell. Meanwhile, the reference cell can be selected by the UE.

[0338] For accurate OTDOA measurements, the time of arrival (TOA) of signals received from three or more geographically dispersed TPs or base stations must be measured. For example, the TOA for each of TPs 1, 2, and 3 can be measured, the RSTD for TPs 1-2, TPs 2-3, and TPs 3-1 can be calculated based on the three TOAs, the hyperbolas can be determined based on this, and the point at which these hyperbolas intersect can be estimated as the location of the UE. In this case, since the accuracy and / or uncertainty of each TOA measurement can occur, the estimated location of the UE can be referred to as a certain range depending on the measurement uncertainty.

[0339] For example, the RSTD for two TPs can be calculated based on Equation 3 below.

[0340] [Equation 3]

[0341]

[0342] Here, c can be the speed of light, {xt, yt} can be the (unknown) coordinates of the target UE, {xi, yi} can be the coordinates of the (known) TP, {x1, y1} can be the coordinates of the reference TP (or other TPs). Here, (Ti-T1) is the transmission time offset between two TPs, which can be referred to as a "real-time difference" (RTD), and ni and n1 can represent values related to UE TOA measurement errors.

[0343] UTDOA (Uplink Time Difference of Arrival)

[0344] In a cell ID (CID) positioning measurement method, a position of a UE can be measured through geographic information of a serving ng-eNB, a serving gNB, and / or a serving cell of the UE. For example, the geographic information of the serving ng-eNB, the serving gNB, and / or the serving cell can be obtained through paging, registration, etc.

[0345] Meanwhile, in addition to the CID positioning measurement method, an E-CID positioning measurement method can improve a UE position estimation using additional UE measurements and / or NG-RAN radio resources, etc. In the E-CID positioning measurement method, some of the measurement methods can be used as in the measurement method of the measurement control system of the RRC protocol, but generally, additional measurements are performed not only for the position measurement of the UE. In other words, a separate measurement configuration or measurement control message can not be provided to measure the position of the UE, and the UE is not expected that an additional measurement operation for the position measurement only will be requested, and the UE can report measurement values obtained through the measurement methods that are generally measurable.

[0346] For example, a serving gNB can implement an E-CID positioning measurement method using E-UTRA measurements provided from a UE.

[0347] Examples of measurement elements that can be used for E-CID positioning can be as follows.

[0348] - UE measurements: E-UTRA RSRP (Reference Signal Received Power), E-UTRA RSRQ (Reference Signal Received Quality), UE E-UTRA receive-transmit time difference (Rx-Tx time difference), GERAN / WLAN RSSI (Reference Signal Strength Indicator), UTRAN CPICH (Common Pilot Channel) RSCP (Received Signal Code Power), UTRAN CPICH Ec / Io

[0349] - E-UTRAN measurements: ng-eNB receive-transmit time difference (Rx-Tx time difference), timing advance (Timing Advance; TADV), angle of arrival (AoA)

[0350] Here, TADV can be divided into Type 1 and Type 2 as follows.

[0351] TADV Type 1 = (ng-eNB receive - transmit time difference) + (UE E-UTRA receive - transmit time difference)

[0352] TADV Type 2 = ng-eNB receive - transmit time difference

[0353] On the other hand, AoA can be used to measure the direction of the UE. AoA can be defined as the estimated angle of the UE's position from the base station / TP in the counterclockwise direction. In this case, the geographic reference direction can be north. The base station / TP can use uplink signals, such as a sounding reference signal (SRS) and / or a demodulation reference signal (DMRS) to make AoA measurements. In addition, the larger the antenna array arrangement, the higher the AoA measurement accuracy, when the antenna array is arranged at the same interval, the signals received from adjacent antenna elements can have a constant phase rotation.

[0354] Multi-RTT (Multi-cell RTT)

[0355] UTDOA is a method of determining the position of a UE by estimating the arrival time of an SRS. When calculating the estimated SRS arrival time, the position of the UE can be estimated by using the serving cell as a reference cell, by the arrival time difference with another cell (or base station / TP). To implement UTDOA, the E-SMLC can instruct the serving cell of the target UE in order to instruct the target UE to transmit an SRS. In addition, the E-SMLC can provide configurations such as whether the SRS is periodic / non-periodic, bandwidth, and frequency / group / sequence hopping.

[0356] Figure 13A

[0357] Unlike OTDOA, which requires fine synchronization (e.g., nanosecond level) between TPs in a network, RTT is based on TOA measurements similarly to OTDOA, but only requires coarse TRP (e.g., base station) timing synchronization. Below, an RTT procedure is described in detail with reference to Figure 13A and 13B .

[0358] Figure 13B and Figure 13A are diagrams illustrating examples of multi-RTT positioning measurement methods.

[0359] Reference is made to Figure 13B , which illustrates an RTT procedure in which TOA measurements are performed in an initiating device and a responding device, and the responding device provides the TOA measurements to the initiating device for RTT measurement (calculation). For example, the initiating device can be a TRP and / or a UE, and the responding device can be a UE and / or a TRP.

[0360] In operation B801 based on the exemplary embodiment, the initiating device can transmit the RTT measurement request, and the responding device can receive the RTT measurement request.

[0361] In operation B803 based on the exemplary embodiment, the initiating device can transmit the RTT measurement signal at t0, and the responding device can acquire the TOA measurement t1.

[0362] In operation B805 based on the exemplary embodiment, the responding device can transmit the RTT measurement signal at t2, and the initiating device can acquire the TOA measurement t3.

[0363] In operation B807 based on the exemplary embodiment, the responding device can transmit information on [t2-t1], and the initiating device can receive the corresponding information and calculate the RTT based on the following Equation 4. The corresponding information can be transmitted / received based on a separate signal or can be transmitted / received by being included in the RTT measurement signal of B805.

[0364] [Equation 4]

[0365] RTT = t3 - t0 - [t2 - t1]

[0366] Reference UL angle-based measurements The corresponding RTT can correspond to a double range measurement between the two devices. Positioning estimation can be performed according to the corresponding information, and a multilateration technique can be used. Based on the measured RTT, d1, d2, and d3 can be determined, and the target device position can be determined by the intersection of the circumferences of the circles centered on each BS1, BS2, BS3 (or TRP) and having each d1, d2, and d3 as a radius.

[0367] The above (3GPP system, positioning protocol, procedure for measuring a position of a UE, positioning measurement method, etc.) can be applied in combination with the method proposed in the present disclosure described later, or can be supplemented to clarify the technical features of the method proposed in the present disclosure. The methods described below are divided for the convenience of description, and of course, some components of any one method can be replaced with some components of another method, or can be applied in combination with each other. That is, unless mutually exclusive, the various embodiments of the present disclosure described below can be combined in whole or in part to constitute other various embodiments of the present disclosure, which can be clearly understood by one of ordinary skill in the art.

[0368] Hereinafter, matters related to technical problems of embodiments described later will be described.

[0369] In the case of angle-based positioning measurement, performance is greatly affected depending on beam alignment between gNB / TRP and UE. In fact, even if the UE uses a configured Tx spatial beam related to the SRS resource, the Tx spatial beam for transmission can deviate from the LoS direction between the UE and each TRP. In addition, when the UE transmits the SRS, a method for reducing the overhead of beam sweeping is also required.

[0370] In the case of angle-based positioning measurement, performance is greatly affected depending on beam alignment between gNB / TRP and UE. In fact, even if the UE uses a configured Tx spatial beam related to the SRS resource, the Tx spatial beam for transmission can deviate from the LoS direction between the UE and each TRP. In this disclosure, a method for improving the performance of angle-based measurement in a method for calculating the position of the UE will be described. That is, the purpose of the embodiments described below relates to beam alignment between the UE and the base station (TRP) for improving the performance of angle-based measurement. Hereinafter, a method for improving the performance of angle-based measurement will be described for each UL / DL scenario.

[0371] Figure 14

[0372] Expected AoA / ZoA

[0373] Conventionally, the LMF delivers a search window (expected RSTD and uncertainty) to each TRP in order to make an effective measurement of timing-related positioning. However, this information (i.e., search window) cannot contribute to angle-based measurement.

[0374] As a method for improving the angle-based method, a method of setting an angle-based search window similar to the search window (expected RSTD and uncertainty) can be considered. Specifically, the angle-based search window can be defined to include at least one of the expected AoA and / or uncertainty (angle range). As an example, the LMF can deliver information about the angle-based search window to each TRP. The effect according to this embodiment is as follows.

[0375] There can be a gain for beam alignment between the UE and the TRP, and the search window (angle) in the TRP can be reduced, which can be helpful for Rx beam configuration. In addition, the above-described embodiments can be used for LoS / N-LoS filtering. Here, LoS can mean line of sight, and N-LoS can mean non-line of sight.

[0376] With respect to the above information for the angle-based search window, the intended UL-AoA / ZoA can be utilized from the base station side. Also, the intended UL-AoD / ZoD and the uncertainty (i.e., angle range) of the corresponding angle (intended UL-AoD / ZoD) can be utilized for the enhancement in the UE side.

[0377] The intended UL-AoZ / AoZ (AoD / ZoD) values are generated based on the location of the existing target UE in the LMF, and the generated values are delivered to the UE through the LPP message. The generated values can be delivered to the base station through the NRPPa. The UE refers to the received intended UL-AoZ / AoZ (AoD / ZoD) values, but can not always operate based on the corresponding values. That is, the operation based on the intended UL-AoZ / AoZ (AoD / ZoD) values can not be enforced on the UE. When the measurement request is requested, the corresponding values can be delivered to the UE.

[0378] Hereinafter, DL / UL intended AoA / ZoA (AoD / AoD) for positioning and ranges (uncertainties) therefor will be described with reference to Figure 15 and Figure 14

[0379] Figure 15 and Figure 14 are diagrams illustrating angles and angle ranges for positioning according to embodiments of the disclosure. Specifically, Figure 14 and 15 intended AoA / ZoA and the uncertainty considering the reference angle (direction) are exemplified. Figure 15 related to reception of the UE (transmission of the TRP) (DL intended AoA / ZoA (AoD / AoD)), while Figure 14 related to transmission of the UE (reception of the TRP) (UL intended AoA / ZoA (AoD / AoD)).

[0380] Referring to Figure 14 , the uncertainty considering the reference angle (direction) can mean an angle range (beam sweeping range) based on a reference direction (e.g., reference directions #1 to #4) of a signal (e.g., PRS) transmitted by the TRP in relation to beam sweeping.

[0381] When the reference direction is #1 to #4, Figure 14 to exemplify intended AoA / ZoA, respectively. When a single intended AoA / ZoA is given, the value can be differently interpreted according to the reference direction (reference angle) and the rotation, as Figure 14 ​​from this perspective, a clear flag for setting the intended AoA / ZoA should be defined. The simplest way to indicate the intended AoA / ZoA is to apply the following flag for azimuth setting of DL-PRS resource (refer to TS 37.355). The flag for setting the azimuth of the DL-PRS resource can be based on Table 13 below.

[0382] [Table 13]

[0383]

[0384] That is, the intended AoA / ZoA can be set to a value expressed based on at least one of the GCS and the LCS. In addition, a method of interpreting the uncertainty representing the angle range (i.e., the angle range based on the uncertainty) must be determined. That is, it can be interpreted that the TRP operates differently based on the uncertainty.

[0385] Referring to Figure 14 (b), the angle intended AoA can be the starting point of the beam sweeping operation. In this case, it is necessary to set whether the direction of the beam sweeping operation is clockwise or counterclockwise. For example, the beam sweeping range related to the uncertainty can be set as the end point of the beam sweeping operation.

[0386] Referring to DL angle-based measurements (a), the angle intended AoA can be set to the middle value of the beam sweeping range.

[0387] As described above, the angle range related to the beam sweeping (beam sweeping range) can vary depending on the interpretation (or starting position) of the configured uncertainty value.

[0388] Figure 14

[0389] When configuring the PRS resource, the base station or the LMF delivers the QCL information of the Rx beam included in the PRS configuration to the UE. The UE receives the PRS through the indicated / configured Rx beam, but this can not be the optimal beam that fully reflects the location of the TRP. Therefore, regarding the configuration of the PRS resource, the LMF can transmit / configure / indicate additional information to the UE as follows.

[0390] The LMF can transmit / configure / indicate information of the intended Tx beam for PRS transmission (e.g., intended AoD / ZoD) to the UE, considering the previously measured UE location in the base station. In this case, the LMF can additionally provide the range information of the maximum guaranteed angle (uncertainty) in addition to the intended Tx beam (intended AoD / ZoD) or the intended Rx beam (intended AoA / ZoA).

[0391] In other words, PRS-related information (transmitted from the base station / each TRP) can be transmitted / configured / indicated to the UE from the LMF. The PRS-related information can include at least one of i) an expected angle (an expected AoD / ZoD or an expected AoA / ZoA) and / or ii) information on a range related to the expected angle (a range related to the expected AoD / ZoD or a range related to the expected AoA / ZoA). That is, the above-described angle-based search window can be configured based on the PRS-related information.

[0392] Hereinafter, reference will be made to Figure 14 for a detailed description of an example of configuring an angle-based search window.

[0393] The unit (granularity) of the information (angle, angle range) included in the PRS-related information can be configured as 1 degree. As an example, a range of the expected AoD / AoA can be configured within [0, 60] with a step of 1 degree. As an example, a range of the expected ZoD / ZoA can be configured within [0, 30] with a step of 1 degree.

[0394] Referring to Figure 14 , the PRS-related information can include information on i) an expected angle and ii) a range related to the expected angle. The information on the expected angle (i.e., an expected AoD / ZoD and / or an expected AoA / ZoA) can indicate a median value of the range related to the expected angle. Figure 14 in (a) of ). As an example, the information on the range related to the expected angle can indicate a size value of the beam sweep range (uncertainty) in (a) of Figure 15 . As a specific example, when the size value is X, the range related to the expected angle can be defined / configured as follows.

[0395] [median - X / 2 to median + X / 2]

[0396] As part of DL-AoA enhancements, signaling of UL AoA / ZoA assistance information (expected UL-AoA / ZoA and uncertainty range) has been introduced.

[0397] On the other hand, in the case of DL angle-based positioning measurements, both DL AoD / ZoD (e.g., gNB viewpoint) and DL AoA / ZoA (e.g., UE viewpoint) are considered, and all options of DL positioning measurements are considered. In consideration of this, it is desirable to introduce expected UL-AoD / ZoD signaled from a location server (LMF) to a UE.

[0398] When the intended UL-AoD and uncertainty are clear to the UE (i.e., when the UE determines the intended UL-AoD and uncertainty or receives information including the intended UL-AoD and uncertainty), the UE does not need to transmit all SRS within the configured SRS resources. In addition, the intended UL-AoD and uncertainty can help the UE determine Tx beamforming. Figure 15 This operation is illustrated.

[0399] Referring to Figure 15 The uncertainty related to the intended UL-AoD can mean a range of angles (beam sweep range) related to beam sweeping based on a reference direction (e.g., reference directions #1 to #2) of a signal (e.g., PRS) transmitted by the TRP.

[0400] Figures 20 to 24 of and Intended UL-AoD / ZoD (AoA / ZoA) when the reference direction is #1 to #2 is exemplified, respectively.

[0401] As an example, may be the intended UL-AoD (AoA). The beam sweep range corresponding to the uncertainty can be determined by using as an intermediate value.

[0402] As an example, may be the intended UL-ZoD (ZoA). The beam sweep range corresponding to the uncertainty can be determined by using as a starting point (end point) of the beam sweep range.

[0403] The beam sweep range is only an example and does not mean that any one determination method is restrictively applied to a specific angle type (e.g., zenith angle or azimuth angle). As an example, the intended UL-ZoD (ZoA) may be defined / configured as an intermediate value of the beam sweep range (uncertainty). For example, the intended UL-AoD (AoA) may be defined as a value representing a starting point (end point) of the beam sweep range (uncertainty).

[0404] As described above, when the intended UL-AoD and uncertainty are configured in the UE, the UE does not need to transmit SRS based on all configured SRS resources, and the intended UL-AoD and uncertainty can help the UE determine Tx beamforming.

[0405] When RAN1 supports expected UL-AoD / ZoD signaled to the UE from the location server (LMF), the configuration related to this can follow the configuration of expected UL-AoA and uncertainty (or details up to RAN2).

[0406] The uncertainty range of expected UL AoD / ZoD can be defined as follows.

[0407] The range of expected UL AoD (azimuth of departure) can be defined as (θAOA-ΔθAOA / 2, θAOA+ΔθAOA / 2). Here, θAOA is the expected azimuth of departure, and ΔθAOA is the uncertainty range of the expected azimuth of departure. Here, is the expected azimuth of departure, and is the uncertainty range of the expected azimuth of departure.

[0408] The range of expected UL ZoD (zenith of departure) can be defined as (θZOD-ΔθAOA / 2, θZOD+ΔθZOD / 2). Here, θZOD is the expected zenith of departure, and ΔθZOD is the uncertainty range of the expected zenith of departure.

[0409] The above values can be configured based on a global coordinate system (GCS) or a local coordinate system (LCS). When the above values are configured based on the GCS, AoD and ZoD can be configured based on north or zenith, respectively.

[0410] In addition to the above method, the location server (LMF) can directly configure the restriction on the SRS resource to the UE. As an example, the LMF can indicate / configure the priority of the SRS resource to the UE. The UE can perform the SRS transmission based on the priority only for some SRS resources.

[0411] Hereinafter, embodiments that can be applied to DL angle-based positioning measurement will be described.

[0412] Table 14 below shows agreements related to the adjacent beam report.

[0413] [Table 14]

[0414]

[0415] It is necessary to clearly determine whether the UE should always report all measurements of the PRS resources related to the subset. This can depend on the UE implementation method, in which case some priority rules should be defined.

[0416] For example, if the PRS resources in the subset are prioritized in descending or ascending order, the UE can report the measurement results of some PRS resources according to the priority. Considering the usefulness of the LMF, the priority rule can be configured / used as follows. The LMF can indicate / configure the subset of the PRS resources to the UE using a priority rule such as descending / ascending order.

[0417] In the following, embodiments related to expected uncertainty window will be described.

[0418] It is agreed that expected uncertainty is supported for DL-AoD improvement when considering the benefits such as reducing Rx beam sweep overhead or beamforming decision. The related agreements are shown in Table 15 below.

[0419] [Table 15]

[0420]

[0421] Referring to Table 15, the location server (LMF) can signal the configuration information for supporting AOD measurement to the UE based on the expected uncertainty window. For example, the configuration information can include a first value (e.g., expected DL-AoD / ZoD value or expected DL-AoA / ZoA value) and a second value (e.g., uncertainty value related to the first value).

[0422] The remaining issue for expected DL-AoD / ZoD (AoA / ZoA) assistance information is the method to signal the corresponding information to the UE. The details for signaling the expected DL-AoD / ZoD (AoA / ZoA) assistance information can follow the same method as the UL AoA / ZoA assistance information (e.g., expected value and uncertainty range). This can be desirable in terms of consistency.

[0423] For the signaling of expected DL-AoD / ZoD (AoA / ZoA) assistance information related to DL-AoD enhancement, the embodiments based on Table 16 below can be considered.

[0424] [Table 16]

[0425]

[0426] Referring to Table 16, the range of the expected angle can be defined / determined by a first value and a second value. The first value can include i) and θAOA or ii) and θAOD. The second value can include i) and ΔθAOA or ii) and ΔθAOD.

[0427] The expected DL AoA (Azimuth of Arrival) range can be defined as Here, is the expected Azimuth of Arrival, while is the uncertainty range of the expected Azimuth of Arrival.

[0428] A range of an expected DL ZoA (Zenith Angle of Arrival) can be defined as (θAOD-ΔθAOD / 2, θAOD+ΔθAOD / 2). Here, θAOD is an expected zenith angle of arrival, and ΔθAOD is an uncertainty range of the expected zenith angle of arrival.

[0429] A range of an expected DL AoD (Azimuth Angle of Departure) can be defined as Here, is an expected azimuth angle of departure, and is an uncertainty range of the expected azimuth angle of departure.

[0430] A range of an expected DL ZOD (Zenith Angle of Departure) can be defined as (θAOD-ΔθAOD / 2, θAOD+ΔθAOD / 2). Here, θAOD is an expected zenith angle, and ΔθAOD is an uncertainty range of the expected zenith angle.

[0431] The first value and the second value can be indicated / configured based on a global coordinate system (GCS) or a local coordinate system (LCS). Also, the first value and the second value can be configured in a predetermined angle unit.

[0432] A boundary value of a range of an expected angle can be determined based on the first value and the second value.

[0433] For example, a first boundary value (e.g., an upper limit value or a lower limit value of the range) of the range of the expected angle can be a value obtained by subtracting 1 / 2 of the second value from the first value (e.g., θ

[0434] or θAOD-ΔθAOD / 2).

[0435] For example, a second boundary value (e.g., an upper limit value or a lower limit value of the range) of the range of the expected angle can be determined as a value obtained by adding 1 / 2 of the second value to the first value (e.g., θ or θAOD+ΔθAOD / 2).

[0436] Also, since the assistance information can be used to determine the LoS / NLoS path, the assistance information can also be used for a timing-based positioning method. In consideration of this, signaling of the assistance information (expected value and uncertainty range) of the DL AoA / ZoA and the DL-AoD / ZoD can also be supported for the DL-TDOA and the multiple RTT positioning methods.

[0437] The methods and rules described in the disclosure can be applied to all positioning methods of all UL / DL+UL, and the above-described SRS can include SRS for MIMO as well as SRS for positioning.

[0438] The methods and rules described in the disclosure can be extended and applied to artificial intelligence (AI) / machine learning (ML).

[0439] The methods and rules described in the disclosure can be applied regardless of the RRC state (e.g., RRC connected state / RRC idle state / RRC inactive state).

[0440] The methods and rules described in the disclosure can be extended and applied to timing-based positioning measurements and hybrid positioning measurements as well as angle-based positioning measurements.

[0441] In an implementation aspect, the operations (e.g., operations related to positioning measurements) of the UE / base station / position server according to the above-described embodiments can be processed by the devices (e.g., the processors 102 and 202 in Figure 21 ). Figure 21

[0442] In addition, the operations (e.g., operations related to positioning measurements) of the UE / base station / position server according to the above-described embodiments can be stored in the form of instructions / programs (e.g., instructions, executable codes) for driving at least one processor (e.g., 102 and 202 in Figure 21 ) in the memory (e.g., 104 and 204 in Figure 16 ).

[0443] Hereinafter, the operations of the UE, the base station (TRP), and the location server (LMF) to which the above-described embodiments can be combined and applied will be described in detail with reference to Figure 17 and Figure 16 .

[0444] Figure 16 is a diagram illustrating the operations of the UE, the TRP, and the LMF to which the methods proposed in the disclosure can be applied.

[0445] Referring to Figure 17 , in operation 2001 according to an exemplary embodiment, the location server and / or LMF can transmit configuration information to the UE, and the UE can receive the configuration information.

[0446] Meanwhile, in operation 2003 according to an exemplary embodiment, the location server and / or LMF can transmit reference configuration information to a transmission and reception point (TRP), and the TRP can receive the information. In operation 2005 according to an exemplary embodiment, the TRP can transmit the reference configuration information to the UE, and the UE can receive the reference configuration information. In this case, operation 2001 according to an exemplary embodiment can be omitted.

[0447] ​On the contrary, operations 2003 and 2005 according to an exemplary embodiment can be omitted. In this case, operation 2001 according to an exemplary embodiment can be performed.

[0448] That is, operation 2001 according to an exemplary embodiment and operations 2003 and 2005 according to an exemplary embodiment can be optional.

[0449] In operation 2007 according to an exemplary embodiment, the TRP can transmit a signal related to the configuration information to the UE, and the UE can receive the signal. For example, the signal related to the configuration information can be a signal for positioning of the UE.

[0450] In operation 2009 according to an exemplary embodiment, the UE can transmit a signal related to the positioning to the TRP, and the TRP can receive the signal. In operation 2011 according to an exemplary embodiment, the TRP can transmit the signal related to the positioning to the location server and / or the LMF, and the location server and / or the LMF can receive the signal.

[0451] Meanwhile, in operation 2013 according to an exemplary embodiment, the UE can transmit the signal related to the positioning to the location server and / or the LMF, and the location server and / or the LMF can receive the signal. In this case, operations 2009 and 2011 according to an exemplary embodiment can be omitted.

[0452] On the contrary, operation 2013 according to an exemplary embodiment can be omitted. In this case, operations 2009 and 2011 according to an exemplary embodiment can be performed.

[0453] That is, operations 2009 and 2011 according to an exemplary embodiment and operation 2013 according to an exemplary embodiment can be optional.

[0454] In an exemplary embodiment, the signal related to the positioning can be obtained based on the configuration information and / or the signal related to the configuration information.

[0455] Figure 17 is a flowchart for explaining operations of each of the UE, the TRP, and the LMF to which the method proposed in the disclosure can be applied.

[0456] Referring to Figure 17 (a), in operation 2101 according to an exemplary embodiment, the UE can receive the configuration information. In operation 2103 according to an exemplary embodiment, the UE can receive the signal related to the configuration information. In operation 2105 according to an exemplary embodiment, the UE can transmit the information related to the positioning.

[0457] Referring to Figure 17of (b), in operation 2201 according to an example embodiment, the TRP can receive the configuration information from the location server and / or LMF, and can transmit it to the UE. In operation 2203 according to an example embodiment, the TRP can transmit a signal related to the configuration information. In operation 2205 according to an example embodiment, the TRP can receive information related to positioning, and can transmit the information to the location server and / or LMF.

[0458] Reference Figure 18 of (c), in operation 2301 according to an example embodiment, the location server and / or LMF can transmit the configuration information. In operation 2305 according to an example embodiment, the location server and / or LMF can receive information related to positioning.

[0459] More specific operations, functions, terms, etc. in operations according to each example embodiment can be performed and described in connection with at least one of the above-described various embodiments and later-described embodiments.

[0460] Hereinafter, the above-described embodiments will be described in detail with reference to operations of the UE Figures 7 to 17 . Figure 18 The methods described below are divided for the sake of description, and unless mutually exclusive, some components of any one method can be replaced with some components of another method, or can be applied in combination with each other.

[0461] Figure 18 is a flowchart illustrating a method for a UE to transmit information about measurements on PRS in a wireless communication system according to an embodiment of the disclosure.

[0462] Reference Figure 7 A method for a UE to transmit information about measurements on a Positioning Reference Signal (PRS) in a wireless communication system according to an embodiment of the disclosure can include receiving configuration information related to PRS (S1810), receiving PRS (S1820), and transmitting information about measurements on PRS (S1830).

[0463] In S1810, the UE receives configuration information related to PRS from a location server. For example, the location server can refer to a Location Management Function (LMF) of Figure 16 . S1810 can be based on operations 2001 or 2003 and 2005 according to Figure 17 , and operation 2101 of Figures 20 to 24 . That is, the configuration information related to PRS can be i) transmitted directly from the location server to the UE, or ii) transmitted from the location server to the UE through a base station (TRP).

[0464] For example, the configuration information related to PRS can include DL PRS resource sets and / or DL-PRS resources, which are based on the higher layer parameters of Table 7 above. However, the disclosure is not limited thereto, and the configuration information related to PRS can further include other higher layer parameters defined in Table 7 above.

[0465] For example, the configuration information related to PRS can be based on assistance information (e.g., ProvideAssistanceData) provided to the UE through an LPP message. The assistance information can include assistance information related to common IEs (common information elements) applicable to one or more positioning methods (e.g., commonIEsProvideAssistanceData). The assistance information related to the common IEs can include assistance data related to PRS (e.g., NR-DL-PRS-AssistanceData).

[0466] Based on an embodiment, the configuration information can include information on an angle related to PRS.

[0467] The information on the angle related to PRS can include i) a first value related to an expected angle and ii) a second value related to a range of the expected angle. This embodiment can be based on Table 16 described above.

[0468] A boundary value of the range of the expected angle can be determined based on the first value and the second value. For example, a first boundary value of the range of the expected angle can be determined as a value obtained by subtracting 1 / 2 of the second value from the first value. For example, a second boundary value of the range of the expected angle can be determined as a value obtained by adding 1 / 2 of the second value to the first value.

[0469] According to an embodiment, the first value can include i) a value related to an angle of arrival (AoA) and a value related to an angle of zenith (ZoA), or ii) a value related to an angle of departure (AoD) and a value related to an angle of zenith (ZoD). In this case, the second value can include i) a value representing a range of the value related to the AoA and a value representing a range of the value related to the ZoA, or ii) a value representing a range of the value related to the AoD and a value representing a range of the value related to the ZoD.

[0470] According to an embodiment, the first value and the second value can be based on a global coordinate system (GCS) or a local coordinate system (LCS).

[0471] The first value and the second value can be configured / defined as a value greater than or equal to 0. That is, each of the first value and the second value is not configured as a negative number, but can be configured as a value equal to or greater than zero. For example, in the case of an azimuth angle, the first value (e.g., azimuthAngleExpected) and the second value (e.g., azimuthAngleRange) can be configured / defined as a value greater than or equal to 0. Alternatively, The first value can be configured to be greater than or equal to 0 and less than or equal to 359, while the second value (e.g.) or The first value (e.g., θAOA or θAOD) can be configured to a value greater than or equal to 0 and less than or equal to 60. For example, in the case of zenith angle, the first value (e.g., θAOA or θAOD) can be configured to a value greater than or equal to 0 and less than or equal to 180, and the second value (e.g., ΔθAOA or ΔθAOD) can be configured to a value greater than or equal to 0 and less than or equal to 30.

[0472] According to an embodiment, the granularity associated with the first and second values ​​can be based on predefined angle values. For example, the first and second values ​​can be configured in a predetermined angle unit (e.g., a unit of 1 degree). For example, the granularity can be defined based on the values ​​in Table 16. In this case, the first and second values ​​can be configured in units of 0.1 degrees.

[0473] The embodiments described in Table 16 above can be applied to improve angle-based positioning methods, but are not limited thereto. According to the embodiments, angle information related to the PRS can be applied to a predefined positioning method. The predefined positioning method may include at least one of the following: i) a positioning method based on downlink departure angle (DL-AoD), ii) a positioning method based on downlink time difference of arrival (DL-TDOA), and / or iii) a positioning method based on multiple round-trip time (multiple RTT).

[0474] Based on the implementation, signaling between the UE and the location server can be performed based on a positioning protocol (S1810). For example, configuration information related to PRS can be received based on an LTE Positioning Protocol (LPP) message. The information for the PRS angle can be the information included in the commonIEsProvideAssistanceData of ProvideAssistanceData in the LPP message (e.g., NR-DL-PRS-AssistanceData).

[0475] Based on the above S1810, from the location server ( Figures 20 to 24 The UE (100 / 200) receives configuration information related to PRS. Figures 20 to 24 The operation of 100 / 200 in the middle can be performed by Figure 21 The device implementation. For example, refer to Figure 7 One or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to receive configuration information related to PRS from the location server 200.

[0476] In S1820, the UE receives the PRS from the base station. For example, the base station can be based on... Figure 7The reference source (e.g., the Transmitting and Receiving Point (TRP)) and the PRS can be based on Figure 16 Radio signals. The S1820 can be based on... Figure 17 The operation in 2007 and Figures 20 to 24 Operation 2103. Receiving PRS can be performed as defined in Tables 6 and 7 above.

[0477] Based on the above S1820, UE( Figures 20 to 24 100 / 200 in the base station ( Figures 20 to 24 The operation of receiving PRS in 100 / 200 can be performed by Figure 21 The device implementation. For example, refer to Figure 16 One or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to receive PRS from base station 200.

[0478] In S1830, the UE sends information about the PRS measurement to the location server. S1830 can be based on... Figure 17 Operations in 2009, 2011, or 2013 and Figures 20 to 24 Operation 2105. That is, information about PRS measurements can be i) sent directly from the UE to the location server, or ii) sent from the UE to the location server via the base station (TRP).

[0479] Information regarding PRS measurements can be transmitted as defined in Table 7 above. For example, information regarding PRS measurements may include the PRS-related Reference Signal Time Difference (RSTD) and / or the PRS-related Reference Signal Received Power (RSRP).

[0480] Based on the embodiments, signaling between the UE and the location server can be performed based on a protocol used for positioning (S1830). For example, information about PRS measurements can be sent based on the LTE Positioning Protocol (LPP).

[0481] Based on the above S1830, UE( Figures 20 to 24 The 100 / 200 in the middle will send information about the PRS measurement to the location server ( Figures 20 to 24 The operation of 100 / 200 in the middle can be performed by Figure 21 The device implementation. For example, refer to Figure 19 One or more processors 102 can control one or more transceivers 106 and / or one or more memories 104 to send information about PRS measurements to the location server 200.

[0482] The following text will refer to the operation of the location server. Figures 7 to 17 The above embodiments are described in detail.Figure 19 The methods described below are divided for ease of description, and unless mutually exclusive, some components of any one method can be replaced with some components of another method, or can be applied in combination with each other.

[0483] Figure 19 is a flowchart illustrating a method for a location server to receive information about measurements of PRS in a wireless communication system according to another embodiment of the disclosure.

[0484] Referring to Figure 7 , a method for a location server to receive information about measurements of a positioning reference signal (PRS) in a wireless communication system according to another embodiment of the disclosure can include transmitting configuration information related to PRS (S1910) and receiving information about measurements of PRS (S1920).

[0485] In S1910, the location server transmits configuration information related to PRS to the UE. For example, the UE can refer to Figure 16 Target device. S1910 can be based on operations 2001 or 2003 and 2005 of FIG. 2 according to Figure 17 and operation 2301 of FIG. 23 of Figure 7 . That is, the configuration information related to PRS can be i) transmitted directly from the location server to the UE, or ii) transmitted from the location server to the UE through a base station (TRP).

[0486] PRS is transmitted from the base station to the UE. For example, the base station can be based on a reference source (e.g., a transmission and reception point (TRP)) according to Figure 7 and the PRS can be based on a radio signal according to Figures 20 to 24 . The base station's transmission of PRS can be performed as defined in Table 6 and Table 7 above.

[0487] For example, the configuration information related to PRS can include DL PRS resource sets and / or DL-PRS resources, which are based on the higher layer parameters of Table 7 above. However, the disclosure is not limited thereto, and the configuration information related to PRS can also include other higher layer parameters defined in Table 7 above.

[0488] For example, the configuration information related to PRS can be based on assistance information provided to the UE through an LPP message (e.g., ProvideAssistanceData). The assistance information can include assistance information related to common IEs (common information elements) applicable to one or more positioning methods (e.g., commonIEsProvideAssistanceData). The assistance information related to the common IEs can include PRS-related assistance data (e.g., NR-DL-PRS-AssistanceData).

[0489] Based on an embodiment, the configuration information can include information on an angle related to PRS.

[0490] The information on the angle related to PRS can include i) a first value related to an expected angle and ii) a second value related to a range of the expected angle. This embodiment can be based on Table 16 described above.

[0491] A boundary value of the range of the expected angle can be determined based on the first value and the second value. For example, a first boundary value of the range of the expected angle can be determined as a value obtained by subtracting 1 / 2 of the second value from the first value. For example, a second boundary value of the range of the expected angle can be determined as a value obtained by adding 1 / 2 of the second value to the first value.

[0492] According to an embodiment, the first value can include i) a value related to an angle of arrival (AoA) and a value related to an angle of zenith of arrival (ZoA), or ii) a value related to an angle of departure (AoD) and a value related to an angle of zenith of departure (ZoD). In this case, the second value can include i) a value representing a range of the value related to the AoA and a value representing a range of the value related to the ZoA, or ii) a value representing a range of the value related to the AoD and a value representing a range of the value related to the ZoD.

[0493] According to an embodiment, the first value and the second value can be based on a global coordinate system (GCS) or a local coordinate system (LCS).

[0494] The first value and the second value can be configured / defined as a value greater than or equal to 0. That is, each of the first value and the second value is not configured as a negative number, but can be configured as a value equal to or greater than zero. For example, in the case of an azimuth angle, the first value (e.g., azimuthAngle) can be configured as a value greater than or equal to 0 and less than or equal to 359, and the second value (e.g., azimuthAngleRange) can be configured as a value greater than or equal to 0 and less than or equal to 359. or ) can be configured as a value greater than or equal to 0 and less than or equal to 359, and the second value (e.g., azimuthAngleRange) can be configured as a value greater than or equal to 0 and less than or equal to 359. or The first value (e.g., θAOA or θAOD) can be configured to a value greater than or equal to 0 and less than or equal to 60. For example, in the case of zenith angle, the first value (e.g., θAOA or θAOD) can be configured to a value greater than or equal to 0 and less than or equal to 180, and the second value (e.g., ΔθAOA or ΔθAOD) can be configured to a value greater than or equal to 0 and less than or equal to 30.

[0495] According to an embodiment, the granularity associated with the first and second values ​​can be based on predefined angle values. For example, the first and second values ​​can be configured in a predefined angle unit (e.g., a unit of 1 degree). For example, the granularity can be defined based on the values ​​in Table 16. In this case, the first and second values ​​can be configured in units of 0.1 degrees.

[0496] The embodiments described in Table 16 above can be applied to improve angle-based positioning methods, but are not limited thereto. According to the embodiments, angle information related to the PRS can be applied to a predefined positioning method. The predefined positioning method may include at least one of the following: i) a positioning method based on downlink departure angle (DL-AoD), ii) a positioning method based on downlink time difference of arrival (DL-TDOA), and / or iii) a positioning method based on multiple round-trip time (multiple RTT).

[0497] Based on the embodiment, signaling between the location server and the UE can be performed based on a protocol used for positioning (S1910). For example, configuration information related to PRS can be received based on an LTE Positioning Protocol (LPP) message. The information for the angle of PRS can be the information included in the commonIEsProvideAssistanceData of ProvideAssistanceData in the LPP message (e.g., NR-DL-PRS-AssistanceData).

[0498] Based on the above S1910, the location server ( Figures 20 to 24 The 100 / 200 in the middle will send the configuration information related to PRS to the UE ( Figures 20 to 24 The operation of 100 / 200 in the middle can be performed by Figure 21 The device implementation. For example, refer to Figure 16 One or more processors 202 can control one or more transceivers 206 and / or one or more memories 204 to send configuration information related to PRS to UE 100.

[0499] In S1920, the location server receives information about PRS measurements from the UE. S1920 can be based on... Figure 17 Operations in 2009, 2011, or 2013 and Figures 20 to 24Operation 2305. That is, information about PRS measurements can be i) sent directly from the UE to the location server, or ii) sent from the UE to the location server via the base station (TRP).

[0500] Information regarding PRS measurements can be received as defined in Table 7 above. For example, information regarding PRS measurements may include the PRS-related reference signal time difference (RSTD) and / or the PRS-related reference signal received power (RSRP).

[0501] Based on the embodiments, signaling between the location server and the UE can be performed based on a protocol used for positioning (S1920). For example, information about PRS measurements can be received based on the LTE Positioning Protocol (LPP).

[0502] Based on the above S1920, the location server ( Figures 20 to 24 100 / 200 in the UE ( Figures 20 to 24 The operation of receiving information about PRS measurements (100 / 200) can be performed by... Figure 21 The device implementation. For example, refer to Examples applied to the communication system of the present disclosure One or more processors 202 can control one or more transceivers 206 and / or one or more memories 204 to receive information about PRS measurements from UE100.

[0503] Figure 20

[0504] The various descriptions, functions, processes, proposals, methods, and / or operation flowcharts of this disclosure described in this document can be applied to, but are not limited to, various fields requiring wireless communication / connectivity between devices (e.g., 5G).

[0505] The following description will be made with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise stated, the same reference numerals may denote the same or corresponding hardware blocks, software blocks, or functional blocks.

[0506] Figure 20 The diagram illustrates a communication system 1 applied to this disclosure.

[0507] refer to Examples applied to the wireless device of the present disclosure, applied to the communication system 1 of the disclosure includes a wireless device, a base station (BS), and a network. Here, the wireless device denotes a device that performs communication using a radio access technology (RAT) (e.g., 5G new RAT (NR)) or long term evolution (LTE)), and can be referred to as a communication / radio / 5G device. The wireless device can include, but is not limited to, a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, the vehicle can include a vehicle with a wireless communication function, an autonomous vehicle, and a vehicle capable of communicating between vehicles. Here, the vehicle can include an unmanned aerial vehicle (UAV) (e.g., a drone). The XR device can include an augmented reality (AR) / virtual reality (VR) / mixed reality (MR) device, and can be implemented in the form of a head-mounted device (HMD), a head-up display (HUD) mounted in a vehicle, a television, a smartphone, a computer, a wearable device, a home appliance device, a digital signage, a vehicle, a robot, etc. The handheld device can include a smartphone, a smartpad, a wearable device (e.g., a smartwatch or smartglasses), and a computer (e.g., a notebook). The home appliance can include a television, a refrigerator, and a washing machine. The IoT device can include a sensor and a smartmeter. For example, the BS and the network can be implemented as a wireless device, and a specific wireless device 200a can operate as a BS / network node with respect to other wireless devices.

[0508] The wireless devices 100a to 100f can be connected to the network 300 through the BS 200. The AI technology can be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f can be connected to the AI server 400 through the BS. The network 300 can be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f can communicate with each other through the BS 200 / network 300, the wireless devices 100a to 100f can perform direct communication (e.g., sidelink communication) with each other without going through the BS / network. For example, the vehicles 100b-1 and 100b-2 can perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). The IoT device (e.g., a sensor) can perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0509] The wireless communication / connection 150a, 150b, or 150c can be established between the wireless devices 100a to 100f / BS 200 or the BS 200 / BS 200. Here, the wireless communication / connection can be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication), or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless devices and the BS / wireless devices can transmit / receive radio signals to / from each other through the wireless communication / connection 150a and 150b. For example, the wireless communication / connection 150a and 150b can transmit / receive signals through various physical channels. To this end, at least a part of various configuration information configuration procedures for transmitting / receiving radio signals, various signal processing procedures (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation procedures can be performed based on various proposals of the disclosure.

[0510] Figure 21

[0511] Figure 21 A wireless device suitable for the disclosure is illustrated.

[0512] Referring to Figure 20 , the first wireless device 100 and the second wireless device 200 can transmit radio signals through various RATs (e.g., LTE and NR). Here, the {first wireless device 100 and second wireless device 200} can correspond to Examples applied to the signal processing circuit of the present disclosure {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x} of the disclosure.

[0513] The first wireless device 100 can include one or more processors 102 and one or more memories 104, and additionally can include one or more transceivers 106 and / or one or more antennas 108. The processor(s) 102 can control the memory(s) 104 and / or the transceiver(s) 106, and can be configured to implement the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in the present document. For example, the processor(s) 102 can process information in the memory(s) 104 to generate first information / signals, and then transmit radio signals including the first information / signals through the transceiver(s) 106. The processor(s) 102 can receive radio signals including second information / signals through the transceiver(s) 106, and then store information obtained by processing the second information / signals in the memory(s) 104. The memory(s) 104 can be connected to the processor(s) 102 and can store various information related to operations of the processor(s) 102. For example, the memory(s) 104 can store software code including commands for executing parts or all of the procedures controlled by the processor(s) 102, or for implementing the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in the present document. Herein, the processor(s) 102 and the memory(s) 104 can be part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 106 can be connected to the processor(s) 102, and transmit and / or receive radio signals through the one or more antennas 108. Each transceiver 106 can include a transmitter and / or a receiver. The transceiver 106 can be used interchangeably with a radio frequency (RF) unit. In the present disclosure, a wireless device can represent a communication modem / circuitry / chip.

[0514] The second wireless device 200 can include one or more processors 202 and one or more memories 204, and additionally further include one or more transceivers 206 and / or one or more antennas 208. The processor(s) 202 can control the memory(s) 204 and / or the transceiver(s) (206), and can be configured to implement the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in the present document. For example, the processor(s) 202 can process information within the memory(s) 204 to generate third information / signal, and then transmit a radio signal including the third information / signal through the transceiver(s) 206. The processor(s) 202 can receive a radio signal including fourth information / signal through the transceiver(s) 206, and then store information obtained by processing the fourth information / signal in the memory(s) 204. The memory(s) 204 can be connected to the memory(s) 204, and can store a variety of information related to the operation of the processor(s) 202. For example, the memory(s) 204 can store software code including commands for executing part or all of the procedures controlled by the processor(s), or for executing the descriptions, functions, procedures, proposals, methods and / or operational flowcharts disclosed in the present document. Herein, the processor(s) 202 and the memory(s) 204 can be a part of a communication modem / circuitry / chip designed to implement a RAT (e.g., LTE or NR). The transceiver(s) 206 can be connected to the processor(s) 202, and transmit and / or receive radio signals through the one or more antennas 208. Each transceiver 206 can include a transmitter and / or a receiver. The transceiver(s) 206 can be used interchangeably with RF unit(s). In the present disclosure, a wireless device can represent a communication modem / circuitry / chip.

[0515] Hereinafter, the hardware elements of the wireless devices 100 and 200 will be described more specifically. One or more protocol layers can be implemented by, but are not limited to, one or more processors 102 and 202. For example, one or more processors 102 and 202 can implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 can 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 operational flowcharts disclosed in this document. One or more processors 102 and 202 can generate messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 can generate signals (e.g., baseband signals) including the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and provide the generated signals to one or more transceivers 106 and 206. One or more processors 102 and 202 can receive signals (e.g., baseband signals) from one or more transceivers 106 and 206 and acquire the PDUs, SDUs, messages, control information, data, or information according to the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0516] The one or more processors 102 and 202 can be referred to as controllers, microcontrollers, microprocessors, or microcomputers. The one or more processors 102 and 202 can 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) can be included in the one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document can be implemented using firmware or software, and the firmware or software can be configured to include modules, procedures, or functions. Firmware or software configured to perform the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document can be included in the one or more processors 102 and 202, or stored in the one or more memories 104 and 204 so as to be driven by the one or more processors 102 and 202. The descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document can be implemented using firmware or software in the form of codes, commands, and command sets.

[0517] One or more memories 104 and 204 can be connected to the one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, codes, instructions, and / or commands. The one or more memories 104 and 204 can be configured by read-only memory (ROM), random-access memory (RAM), electrically programmable read-only memory (EPROM), flash memory, hard disk drive, register, buffer, computer-readable storage medium, and / or combination thereof. The one or more memories 104 and 204 can be internal and / or external to the one or more processors 102 and 202. The one or more memories 104 and 204 can be connected to the one or more processors 102 and 202 through various technologies such as wired or wireless connection.

[0518] The one or more transceivers 106 and 206 can transmit user data, control information, and / or radio signals / channels mentioned in the methods and / or operational flowcharts of the present document to one or more other devices. The one or more transceivers 106 and 206 can receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present document from one or more other devices. For example, the one or more transceivers 106 and 206 can be connected to the one or more processors 102 and 202 and transmit and receive radio signals. For example, the one or more processors 102 and 202 can perform control so that the one or more transceivers 106 and 206 can transmit user data, control information, or radio signals to one or more other devices. The one or more processors 102 and 202 can perform control so that the one or more transceivers 106 and 206 can receive user data, control information, or radio signals from one or more other devices. The one or more transceivers 106 and 206 can be connected to the one or more antennas 108 and 208, and the one or more transceivers 106 and 206 can be configured to transmit and receive user data, control information, and / or radio signals / channels mentioned in the descriptions, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in the present document through the one or more antennas 108 and 208. In the present document, the one or more antennas can be a plurality of physical antennas or a plurality of logical antennas (e.g., antenna ports). The one or more transceivers 106 and 206 can convert received radio signals / channels, etc. from RF band signals to baseband signals in order to facilitate processing of the received user data, control information, radio signals / channels, etc. using the one or more processors 102 and 202. The one or more transceivers 106 and 206 can convert user data, control information, radio signals / channels, etc. processed using the one or more processors 102 and 202 from baseband signals to RF band signals. To this end, the one or more transceivers 106 and 206 can include (analog) oscillators and / or filters.

[0519] Figure 22

[0520] Figure 22 A signal processing circuit for transmitting a signal is illustrated.

[0521] Reference Figure 22 The signal processing circuit 1000 can include a scrambler 1010, a modulator 1020, a layer mapper 1030, a precoder 1040, a resource mapper 1050, and a signal generator 1060. Figure 21 The operations / functions of the signal processing circuit 1000 can be performed by, but not limited to, the processors 102 and 202 and / or the transceivers 106 and 206 of the electronic device 1000. Figure 22 The processors 102 and 202 and / or the transceivers 106 and 206 of the electronic device 1000 can perform the operations / functions of the signal processing circuit 1000. Figure 21The hardware elements of the exemplary computing system can be Figure 21 implemented by, for example, the processors 102 and 202 and / or the transceivers 106 and 206. For example, the blocks 1010 through 1060 can be implemented by the processors 102 and 202. Alternatively, the blocks 1010 through 1050 can be implemented by the processors 102 and 202, and the block 1060 can be implemented by the transceivers 106 and 206. Figure 21 Figure 21 Figure 22

[0522] The codeword can be converted into a radio signal via the signal processing circuit 1000. Here, the codeword is a sequence of coded bits of an information block. The information block can include a transport block (e.g., UL-SCH transport block, DL-SCH transport block). The radio signal can be transmitted through various physical channels (e.g., PUSCH and PDSCH). Figure 22

[0523] Specifically, the codeword can be converted into a scrambled bit sequence by the scrambler 1010. A scrambling sequence for scrambling can be generated based on an initialization value, and the initialization value can include ID information of the wireless device. The scrambled bit sequence can be modulated into a sequence of modulation symbols by the modulator 1020. The modulation scheme can include pi / 2-binary phase shift keying (pi / 2-BPSK), m-phase shift keying (m-PSK), and m-quadrature amplitude modulation (m-QAM). The sequence of complex modulation symbols can be mapped to one or more transmission layers by the layer mapper 1030. The modulation symbols of each transmission layer can be mapped (precoded) to a corresponding antenna port by the precoder 1040. The output z of the precoder 1040 can be obtained by multiplying the output y of the layer mapper 1030 by an N*M precoding matrix W. Here, N is the number of antenna ports and M is the number of transmission layers. The precoder 1040 can perform precoding after performing transform precoding (e.g., DFT) on the complex modulation symbols. Alternatively, the precoder 1040 can perform precoding without performing transform precoding.

[0524] The resource mapper 1050 can map the modulation symbols of each antenna port to time-frequency resources. The time-frequency resources can include a plurality of symbols (e.g., CP-OFDMA symbols and DFT-s-OFDMA symbols) in the time domain and a plurality of subcarriers in the frequency domain. The signal generator 1060 can generate a radio signal from the mapped modulation symbols and can transmit the generated radio signal to other devices through each antenna. For this purpose, the signal generator 1060 can include an inverse fast Fourier transform (IFFT) module, a cyclic prefix (CP) inserter, a digital-to-analog converter (DAC), and a frequency up-converter.

[0525] ​​​​The signal processing procedure for signals received in a wireless device can be described as follows: Figure 21 The signal processing procedures 1010 to 1060 are configured in the reverse manner. For example, wireless devices (e.g., Examples applied to the wireless device of the present disclosure The 100 and 200 antennas can receive radio signals from the outside via the antenna port / transceiver. The received radio signals can be converted into baseband signals by a signal restorer. For this purpose, the signal restorer may include a frequency downlink converter, an analog-to-digital converter (ADC), a CP remover, and a Fast Fourier Transform (FFT) module. Next, the baseband signals can be recovered into codewords through a resource demapping process, a post-encoding process, a demodulation processor, and a descrambling process. The codewords can be recovered into the original information blocks through decoding. Therefore, the signal processing circuitry (not shown) for receiving signals may include a signal restorer, a resource demapping unit, a post-encoder, a demodulator, a descrambler, and a decoder.

[0526] Figure 23

[0527] Figure 20 The illustration shows another example of a wireless device applied to this disclosure.

[0528] Wireless devices can be implemented in various forms depending on the use case / service (see reference). Figure 23 ). refer to Figure 21 Wireless devices 100 and 200 can correspond to Figure 21 The wireless devices 100 and 200 can be configured from various elements, components, units / parts, and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130, and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include... Figure 21 One or more processors 102 and 202 and / or one or more memories 104 and 204 are included. For example, transceiver 114 may include... Figure 20 One or more transceivers 106 and 206 and / or one or more antennas 108 and 208. Control unit 120 is electrically connected to communication unit 110, memory 130, and add-on components 140, and controls the overall operation of the wireless device. For example, control unit 120 can control the electrical / mechanical operation of the wireless device based on programs / code / commands / information stored in memory unit 130. Control unit 120 can transmit information stored in memory unit 130 to an external source (e.g., other communication devices) via communication unit 110 through a wireless / wired interface, or store information received from an external source (e.g., other communication devices) via communication unit 110 in memory unit 130.

[0529] The additional components 140 can be variously configured according to the type of the wireless device. For example, the additional components 140 can include at least one of a power unit / battery, an input / output (I / O) unit, a driving unit, and a computing unit. The wireless device can be implemented in the form of a robot (100a of FIG. 1), a vehicle (100b-1 and 100b-2 of FIG. 1), an XR device (100c of FIG. 1), a hand-held device (100d of FIG. 1), a home appliance (100e of FIG. 1), an IoT device (100f of FIG. 1), a digital broadcast terminal, a hologram device, a public safety device, an MTC device, a medical device, a financial technology device (or a financial device), a security device, a climate / environment device, an AI server / device (400 in FIG. 1), a BS (200 of FIG. 1), a network node, or the like. According to a use example / service, the wireless device can be used in a mobile or fixed place. Figure 20 Figure 20 Figure 20 Figure 20 Figure 20 Figure 20 Figure 20 Figure 23

[0530] In Examples applied to the handheld device of the present disclosure , the entirety of the various elements, components, units / portions, and / or modules in the wireless devices 100 and 200 can be connected to each other through a wired interface, or at least a part thereof can be wirelessly connected through the communication unit. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 can be connected through a wire, and the control unit 120 and the first unit (e.g., 130 and 140) can be wirelessly connected through the communication unit 110. Each element, component, unit / portion, and / or module within the wireless devices 100 and 200 can further include one or more elements. For example, the control unit 120 can be configured by a set of one or more processors. As an example, the control unit 120 can be configured by a set of a communication control processor, an application processor, an electronic control unit (ECU), a graphic processing unit, and a memory control processor. As another example, the memory 130 can be configured by a random access memory (RAM), a dynamic RAM (DRAM), a read only memory (ROM), a flash memory, a volatile memory, a non-volatile memory, and / or a combination thereof.

[0531] Figure 24

[0532] Figure 24 ​​​​​​​​A hand-held device applied to the present disclosure is illustrated. The hand-held device can include a smart phone, a smart pad, a wearable device (e.g., a smart watch or smart glasses), or a portable computer (e.g., a notebook). The hand-held device can be referred to as a mobile station (MS), a user terminal (UT), a mobile subscriber station (MSS), a subscriber station (SS), an advanced mobile station (AMS), or a wireless terminal (WT).

[0533] Reference Figure 23 The hand-held device 100 can include an antenna unit 108, a communication unit 110, a control unit 120, a memory unit 130, a power supply unit 140a, an interface unit 140b, and an I / O unit 140c. The antenna unit 108 can be configured as a part of the communication unit 110. The blocks 110 to 130 / 140a to 140c correspond to the blocks 110 to 130 / 140 of FIG. 1, respectively. Figures 20 to 24

[0534] The communication unit 110 can transmit and receive signals (e.g., data and control signals) to and from other wireless devices or a BS. The control unit 120 can perform various operations by controlling constituent elements of the hand-held device 100. The control unit 120 can include an application processor (AP). The memory unit 130 can store data / parameters / programs / codes / commands required to drive the hand-held device 100. The memory unit 130 can store input / output data / information. The power supply unit 140a can supply power to the hand-held device 100 and include a wired / wireless charging circuit, a battery, etc. The interface unit 140b can support connection of the hand-held device 100 to other external devices. The interface unit 140b can include various ports (e.g., an audio I / O port and a video I / O port) for connection with external devices. The I / O unit 140c can input or output video information / signals, audio information / signals, data, and / or information input by a user. The I / O unit 140c can include a camera, a microphone, a user input unit, a display unit 140d, a speaker, and / or a haptic module.

[0535] ​As an example, in the case of data communication, the I / O unit 140c can acquire information / signals (e.g., touch, text, voice, image, or video) input by a user and can store the acquired information / signals in the memory unit 130. The communication unit 110 can convert the information / signals stored in the memory into radio signals and directly transmit the converted radio signals to other wireless devices or to a BS. The communication unit 110 can receive radio signals from other wireless devices or a BS, and then restore the received radio signals to original information / signals. The restored information / signals can be stored in the memory unit 130 and can be output as various types (e.g., text, voice, image, video, or haptic) through the I / O unit 140c.

[0536] Here, the wireless communication technology implemented in the device of the disclosure ( Figures 20 to 24 ) can include LTE, NR, and 6G, and Narrow Band Internet of Things (NB-IoT) for low power communication. For example, the NB-IoT technology can be an example of an LPWAN (Low Power Wide Area Network) technology, and can be implemented in standards such as LTE Cat NB1 and / or LTE Cat NB2, and is not limited to the above names.

[0537] Additionally or optionally, the wireless communication technology implemented in the device of the disclosure ( Figures 20 to 24 ) can perform communication based on LTE-M technology. For example, the LTE-M technology can be an example of an LPWAN technology, and can be named by various names such as enhanced machine type communication (eMTC). For example, the LTE-M technology can be implemented in at least one of various standards such as 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-BL (non-band limited), 5) LTE-MTC, 6) LTE machine type communication, and / or 7) LTE M, and is not limited to the above names.

[0538] Additionally or optionally, in consideration of low power communication, the wireless communication technology implemented in the device of the disclosure ( ​ ) can include at least one of ZigBee, Bluetooth, and Low Power Wide Area Network (LPWAN), and is not limited to the above names. For example, the ZigBee technology can generate a PAN (Personal Area Network) related to small / low power digital communication based on various standards such as IEEE 802.15.4, and can be named by various names.

[0539] Embodiments of the disclosure described hereinafter are combinations of components and features of the disclosure. Each component or feature should be viewed as an option that can be included or excluded, unless otherwise explicitly stated. Each component or feature can be implemented by one or more of the components or features of the disclosure. Further, the components and / or features of a particular embodiment can be combined with the components and / or features of another embodiment. The order of the operations described in an embodiment can be changed. Some components or features of an embodiment can be included in another embodiment or omitted from another embodiment. As such, the above-described embodiments of the disclosure should not be construed as limiting, but merely exemplary, and the scope of the disclosure should be determined from the appended claims, along with their full scope of equivalents.

[0540] Embodiments of the disclosure can be implemented by hardware, firmware, software, or a combination thereof. In the case of implementation by hardware, according to the hardware implementation, the exemplary embodiments described herein can be implemented by using one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), processors, controllers, micro-controllers, microprocessors, etc.

[0541] In the case of implementation by firmware or software, the embodiments of the disclosure can be implemented in the form of modules, procedures, functions, and the like to perform the above-described functions or operations. Software code can be stored in a memory and executed by a processor. The memory can be located inside or outside the processor, and data can be transmitted and received to / from the processor through various means known in the art.

[0542] It will be apparent to those skilled in the art that the disclosure can be embodied in other specific forms without departing from the essential characteristics of the disclosure. Therefore, the above detailed description should not be construed as limiting in all respects, and should be considered exemplary. The scope of the disclosure should be determined by a reasonable interpretation of the appended claims, and all modifications within the scope of equivalents of the disclosure are included in the scope of the disclosure.

Claims

1. A method for a user equipment to send information for measurements of positioning reference signals, PRSs, in a wireless communication system, the method comprising: receiving configuration information related to the PRSs from a location server, wherein the configuration information comprises: i) a first value related to an expected angle related to the PRSs, and ii) a second value related to a range of the expected angle, wherein the expected angle is set as a starting point or an intermediate point of a beam sweeping operation, wherein a range of the expected angle related to an uncertainty is set as an ending point of the beam sweeping operation, and wherein a range of the beam sweeping operation is related to line-of-sight, LOS, and non-line-of-sight, N-LOS, filtering, wherein a first boundary value of the range of the expected angle is a value of the first value plus half of the second value, wherein a second boundary value of the range of the expected angle is a value of the first value minus half of the second value; receiving the PRSs from a base station based on the expected angle, the range of the expected angle, the first boundary value, and the second boundary value; performing measurements on the PRSs; and sending information for the measurements of the PRSs to the location server, wherein in a case that the expected angle is an expected angle of arrival, AoA, of a downlink, DL, the first value is the expected AoA, and the second value is a range of uncertainty of the expected AoA.

2. The method of claim 1, wherein, the first value and the second value are based on a global coordinate system, GCS, or a local coordinate system, LCS.

3. The method of claim 1, wherein, the first value and the second value are configured in a predefined angle unit.

4. The method of claim 1, wherein, applying information related to angles related to the PRSs to a predefined positioning method, and wherein the predefined positioning method comprises at least one of: i) a positioning method based on a downlink angle of departure, DL-AoD, ii) a positioning method based on a downlink time difference of arrival, DL-TDOA, and / or iii) a positioning method based on multi-round trip time, multi-RTT.

5. The method of claim 3, wherein, receiving the configuration information related to the PRSs based on a LTE positioning protocol, LPP, message. 6.A user equipment, UE, to send information for measurements of positioning reference signals, PRSs, in a wireless communication system, the UE comprising: one or more transceivers; one or more processors to control the one or more transceivers; and one or more memories operably connected to the one or more processors, the one or more memories storing instructions for performing operations based on execution by the one or more processors, the operations comprising: receiving configuration information related to the PRSs from a location server, wherein the configuration information comprises: i) a first value related to an expected angle related to the PRSs, and ii) a second value related to a range of the expected angle, wherein the expected angle is set as a starting point or a middle point of a beam sweep operation, wherein a range of the expected angle related to uncertainty is set as an ending point of the beam sweep operation, and wherein a range of the beam sweep operation is related to line-of-sight (LOS) and non-line-of-sight (N-LOS) filtering, wherein a first boundary value of the range of the expected angle is a value of the first value plus half of the second value, wherein a second boundary value of the range of the expected angle is a value of the first value minus half of the second value; receiving, from a base station, the PRS based on the expected angle, the range of the expected angle, the first boundary value, and the second boundary value; performing a measurement on the PRS; and sending, to the location server, information of the measurement for the PRS, wherein, in a case that the expected angle is an expected downlink (DL) angle of arrival (AoA), the first value is an expected AoA, and the second value is a range of uncertainty of the expected AoA.

7. An apparatus for controlling a user equipment (UE) to send information of a measurement for a positioning reference signal (PRS) in a wireless communication system, the apparatus comprising: one or more processors; and one or more memories operatively connected to the one or more processors, the one or more memories storing instructions for performing operations based on execution of the instructions by the one or more processors, the operations comprising: receiving, from a location server, configuration information related to the PRS, wherein the configuration information comprises: i) a first value related to an expected angle related to the PRS, and ii) a second value related to a range of the expected angle, wherein the expected angle is set as a starting point or a middle point of a beam sweep operation, wherein a range of the expected angle related to uncertainty is set as an ending point of the beam sweep operation, and wherein a range of the beam sweep operation is related to line-of-sight (LOS) and non-line-of-sight (N-LOS) filtering, wherein a first boundary value of the range of the expected angle is a value of the first value plus half of the second value, wherein a second boundary value of the range of the expected angle is a value of the first value minus half of the second value; receiving, from a base station, the PRS based on the expected angle, the range of the expected angle, the first boundary value, and the second boundary value; performing a measurement on the PRS; and sending, to the location server, information of the measurement for the PRS, wherein, in a case that the expected angle is an expected downlink (DL) angle of arrival (AoA), the first value is an expected AoA, and the second value is a range of uncertainty of the expected AoA.

8. One or more non-transitory computer-readable media storing one or more instructions, comprising: the one or more instructions, based on execution by the one or more processors, perform operations, the operations comprising: receiving, from a location server, configuration information related to a positioning reference signal (PRS), wherein the configuration information comprises i) a first value related to an expected angle related to the PRS, and ii) a second value related to a range of the expected angle, wherein the expected angle is set as a starting point or an intermediate point of a beam sweep operation, wherein the range of the expected angle related to uncertainty is set as an ending point of the beam sweep operation, and wherein a range of the beam sweep operation is related to line-of-sight, LOS, and non-line-of-sight, N-LOS, filtering, wherein a first boundary value of the range of the expected angle is a value of the first value plus half of the second value, wherein a second boundary value of the range of the expected angle is a value of the first value minus half of the second value; receiving the PRS from a base station based on the expected angle, the range of the expected angle, the first boundary value, and the second boundary value; performing a measurement on the PRS; and sending information of the measurement for the PRS to the location server, wherein in a case that the expected angle is an expected angle of arrival, AoA, of a downlink, DL, the first value is the expected AoA, and the second value is a range of uncertainty of the expected AoA.

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