Method for sending and receiving signals in wireless communication system and device supporting the method

Abstract

Various embodiments relate to a next generation wireless communication system for supporting a higher data transmission rate than a 4th generation (4G) wireless communication system, etc. According to various embodiments, a method for transmitting and receiving a signal in a wireless communication system and an apparatus supporting the same may be provided, and various other embodiments may be provided.

Description

Technical Field

[0001] Various embodiments of the present disclosure relate to wireless communication systems. Background Art

[0002] As many communication devices require higher communication capacity, the necessity of mobile broadband communication that is greatly improved over existing radio access technologies (RATs) has increased. In addition, large-scale machine-type communication (MTC) that can provide various services anytime and anywhere by connecting many devices or things to each other has been considered in the next generation communication system. In addition, communication system design that can support services / UEs that are sensitive to reliability and delay has been discussed. Summary of the invention

[0003] Technical issues

[0004] Various embodiments may provide a method and apparatus for transmitting and receiving signals in a wireless communication system.

[0005] Various embodiments of the present disclosure may provide a positioning method in a wireless communication system and a device supporting the same.

[0006] Those skilled in the art will appreciate that the objectives that can be achieved using various embodiments are not limited to those specifically described above, and the above and other objectives that can be achieved by various embodiments will be more clearly understood from the following detailed description.

[0007] Technical Solution

[0008] Various embodiments of the present disclosure may provide a method of transmitting and receiving a signal in a wireless communication system and a device supporting the same.

[0009] According to various embodiments, a method performed by a user equipment (UE) in a wireless communication system may be provided.

[0010] According to various embodiments, the method may include the following steps: receiving first configuration information related to a positioning reference signal (PRS); receiving second configuration information indicating a reference; and performing measurement based on (i) the first configuration information and (ii) a priority of the measurement.

[0011] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one transmission point (TP).

[0012] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0013] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0014] According to various embodiments, at least one PRS resource identifier (ID) may be assigned to at least one PRS resource, respectively.

[0015] According to various embodiments, the at least one PRS resource may be sorted in descending order of priority.

[0016] According to various embodiments, at least one PRS resource set ID may be respectively assigned to at least one PRS resource set.

[0017] According to various embodiments, at least one PRS resource set may be sorted according to priority.

[0018] According to various embodiments, at least one TP ID may be assigned to at least one TP, respectively.

[0019] According to various embodiments, at least one TP may be sorted according to priority.

[0020] According to various embodiments, at least one of the following may be satisfied: (i) at least one reference PRS resource set is included in at least one PRS resource set; (ii) at least one reference PRS resource is included in at least one PRS resource; or (iii) at least one reference TP is included in at least one TP.

[0021] According to various embodiments, measurement may be performed based on priority based on at least one of (i) the number of at least one PRS resource sets, (ii) the number of at least one PRS resource, or (iii) the number of at least one TP exceeding the PRS processing capability of the UE.

[0022] According to various embodiments, a plurality of PRSs may be received based on the first configuration information.

[0023] According to various embodiments, an object of measurement may be determined from among a plurality of PRSs based on priority.

[0024] According to various embodiments, identifying the reference indicated by the second configuration information as the highest priority with respect to priority may include identifying at least one of (i) at least one reference PRS resource set, (ii) at least one reference PRS resource, or (iii) at least one reference TP as the highest priority with respect to priority.

[0025] According to various embodiments, a UE operating in a wireless communication system may be provided.

[0026] According to various embodiments, the UE may include: a transceiver; and at least one processor coupled to the transceiver.

[0027] According to various embodiments, at least one processor may be configured to: receive first configuration information related to PRS; receive second configuration information indicating a reference; and perform measurement based on (i) the first configuration information and (ii) a priority of measurement.

[0028] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0029] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0030] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0031] According to various embodiments, at least one PRS resource ID may be assigned to at least one PRS resource, respectively.

[0032] According to various embodiments, the at least one PRS resource may be sorted in descending order of priority.

[0033] According to various embodiments, the at least one processor may be further configured to communicate with at least one of: a mobile terminal, a network, or an autonomous driving vehicle other than the vehicle including the UE.

[0034] According to various embodiments, a method performed by a Base Station (BS) in a wireless communication system may be provided.

[0035] According to various embodiments, the method may include the following steps: sending first configuration information related to the PRS; sending second configuration information indicating a reference; and receiving information about measurements related to positioning in response to the first configuration information.

[0036] According to various embodiments, the measurements may be based on a priority of the measurements.

[0037] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0038] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0039] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0040] According to various embodiments, a BS operating in a wireless communication system may be provided.

[0041] According to various embodiments, the BS may include: a transceiver; and at least one processor coupled with the transceiver.

[0042] According to various embodiments, at least one processor may be configured to: send first configuration information related to the PRS; send second configuration information indicating a reference; and receive information about measurements related to positioning in response to the first configuration information.

[0043] According to various embodiments, the measurements may be based on a priority of the measurements.

[0044] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0045] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0046] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0047] According to various embodiments, an apparatus operating in a wireless communication system may be provided.

[0048] According to various embodiments, the device may include: at least one processor; and at least one memory configured to store at least one instruction, the at least one instruction causing the at least one processor to perform a method.

[0049] According to various embodiments, the method may include the following steps: receiving first configuration information related to the PRS; receiving second configuration information indicating a reference; and performing measurement based on (i) the first configuration information and (ii) a priority of measurement.

[0050] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0051] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0052] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0053] According to various embodiments, a processor-readable medium may be provided, which is configured to store at least one instruction that causes at least one processor to perform a method.

[0054] According to various embodiments, the method may include the following steps: receiving first configuration information related to the PRS; receiving second configuration information indicating a reference; and performing measurement based on (i) the first configuration information and (ii) a priority of measurement.

[0055] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0056] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0057] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0058] The various embodiments described above are only some preferred embodiments of the various embodiments, and those skilled in the art can derive and understand many embodiments reflecting the technical features of the various embodiments based on the following detailed description.

[0059] Beneficial Effects

[0060] According to various embodiments, signals may be efficiently transmitted and received in a wireless communication system.

[0061] According to various embodiments, positioning can be effectively performed in a wireless communication system.

[0062] According to various embodiments, when a positioning reference signal (PRS) is configured beyond the capability of a user equipment (UE), positioning-related operations may be provided unambiguously.

[0063] According to various embodiments, when the PRS is configured beyond the capability of the UE, a method for determining a PRS to be measured preferentially and / or its priority may be provided.

[0064] Those skilled in the art will appreciate that the effects that can be achieved using various embodiments are not limited to those specifically described above, and other advantages of various embodiments will be more clearly understood from the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] The accompanying drawings are provided together with the detailed description to help understand the various embodiments. However, the technical features of the various embodiments are not limited to specific drawings, and the features disclosed in the various drawings can be combined with each other to form new embodiments. The reference numerals in the various drawings represent structural elements.

[0066] Figure 1 is a diagram showing physical channels that can be used in various embodiments and a signal transmission method using the physical channels.

[0067] Figure 2 is a diagram showing a resource grid in a New Radio (NR) system to which various embodiments are applicable.

[0068] Figure 3 is a diagram showing the mapping of physical channels in time slots to which various embodiments are applicable.

[0069] Figure 4 is a diagram showing an example of mapping of physical channels to time slots to which various embodiments of the present disclosure are applicable.

[0070] Figure 5 is a diagram showing an exemplary positioning protocol configuration for user equipment (UE) positioning applicable to various embodiments of the present disclosure.

[0071] Figure 6is a diagram showing an example of the architecture of a system for positioning a UE to which various embodiments of the present disclosure are applicable.

[0072] Figure 7 is a diagram showing an example of a process of positioning a UE to which various embodiments of the present disclosure are applicable.

[0073] Figure 8 is a diagram illustrating protocol layers supporting LTE Positioning Protocol (LPP) message transmission to which various embodiments apply.

[0074] Fig. 9 is a diagram showing protocol layers supporting NR Positioning Protocol A (NRPPa) protocol data unit (PDU) transmission to which various embodiments apply.

[0075] Fig.10 is a diagram illustrating an observed time difference of arrival (OTDOA) positioning method to which various embodiments are applicable.

[0076] Fig.11 is a diagram illustrating a multi-round trip time (multi-RTT) positioning method to which various embodiments are applicable.

[0077] Fig.12 is a simplified diagram illustrating methods of operating a UE, a transmission and reception point (TRP), a location server and / or a location management function (LMF) according to various embodiments.

[0078] Fig.13 is a simplified diagram illustrating methods of operating a UE, a TRP, a location server and / or a LMF according to various embodiments.

[0079] Fig.14 is a diagram schematically illustrating a method of operating a UE and a network node according to various embodiments.

[0080] Fig.15 is a flow chart illustrating a method of operating a UE according to various embodiments.

[0081] Fig.16 is a flow chart illustrating a method of operating a network node according to various embodiments.

[0082] Fig.17 is a block diagram illustrating a device for implementing various embodiments of the present disclosure.

[0083] Fig.18 An exemplary communication system to which various embodiments of the present disclosure are applied is shown.

[0084] Fig.19 An exemplary wireless device to which various embodiments of the present disclosure are applicable is shown.

[0085] Fig. 20 Other exemplary wireless devices to which various embodiments of the present disclosure are applied are shown.

[0086] Fig.21 An exemplary portable device to which various embodiments of the present disclosure are applied is shown.

[0087] Fig. 22 An exemplary vehicle or autonomous driving vehicle to which various embodiments of the present disclosure are applied is shown. DETAILED DESCRIPTION

[0088] Various embodiments are applicable to various wireless access technologies, such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). CDMA can be implemented as a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented as a radio technology such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented as a radio technology such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wireless Fidelity (Wi-Fi)), IEEE802.16 (Worldwide Interoperability for Microwave Access (WiMAX)), IEEE 802.20, and Evolved UTRA (E-UTRA). UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a part of Evolved UMTS (E-UMTS) using E-UTRA, and LTE-Advanced (A) is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE / LTE-A.

[0089] For clarity of description, various embodiments are described in the context of 3GPP communication systems (e.g., including LTE, NR, 6G, and next-generation wireless communication systems), but the technical spirit of the various embodiments is not limited thereto. For the background technology, terms, and abbreviations used in the description of the various embodiments, reference is made to the technical specifications published before this disclosure. For example, you can refer to 3GPP TS36.211, 3GPP TS 36.212, 3GPP TS 36.213, 3GPP TS 36.300, 3GPP TS 36.321, 3GPP TS36.331, 3GPP TS 36.355, 3GPP TS 36.455, 3GPP TS 37.355, 3GPP TS 37.455, 3GPP TS38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.214, 3GPP TS 38.215, 3GPP TS38.300, 3GPP TS 38.321, 3GPP TS 38.331, 3GPP TS 3GPP TS 38.355, 3GPP TS 38.455, etc.

[0090] 1.3GPP system

[0091] 1.1. Physical channels and signal transmission and reception

[0092] In a wireless access system, a user equipment (UE) receives information from a base station (BS) in a downlink (DL) and transmits information to the BS in an uplink UL. The information transmitted and received between the UE and the BS includes general data information and various types of control information. There are many physical channels depending on the type / purpose of the information transmitted and received between the BS and the UE.

[0093] Figure 1 is a diagram showing physical channels that can be used in various embodiments and a signal transmission method using the physical channels.

[0094] When the UE is powered on or enters a new cell, the UE performs an initial cell search, including acquiring synchronization with the BS in step S11. To this end, the UE receives a synchronization signal block (SSB) from the BS. The SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The UE synchronizes with the BS based on the PSS / SSS and acquires information such as a cell identity. The UE can obtain intra-cell broadcast information based on the PBCH. In addition, the UE can check the status of the DL channel by receiving a downlink reference signal (DL RS) in the initial cell search.

[0095] After the initial cell search, the UE may acquire more specific system information by receiving a physical downlink control channel (PDCCH) and receiving a physical downlink shared channel (PDSCH) based on information of the PDCCH in step S12.

[0096] Subsequently, in order to complete the connection with the BS, the UE may perform a random access procedure with the BS (S13 to S16). In the random access procedure, the UE may send a preamble on a physical random access channel (PRACH) (S13), and may receive a PDCCH and a random access response (RAR) to the preamble on a PDSCH associated with the PDCCH (S14). The UE may use the scheduling information in the RAR to send a PUSCH (S15) and perform a contention resolution procedure, including receiving a PDCCH signal and a PDSCH signal corresponding to the PDCCH signal (S16).

[0097] When the random access procedure is performed in two steps (i.e., 2-step RACH or type 2 random access procedure) instead of four steps (i.e., 4-step RACH or type 1 random access procedure) as described above, S13 / S15 may be performed as an operation of the UE performing transmission (e.g., an operation of sending a message A including a PRACH preamble and / or a PUSCH), and S14 / S16 may be performed as an operation of the BS performing transmission (e.g., an operation of sending a message B including a RAR and / or contention resolution information).

[0098] After the above process, in a general UL / DL signal transmission process, the UE may receive a PDCCH and / or a PDSCH from the BS (S17) and transmit a physical uplink shared channel (PUSCH) and / or a physical uplink control channel (PUCCH) to the BS (S18).

[0099] The control information sent by the UE to the BS is generally called uplink control information (UCI). UCI includes hybrid automatic repeat request acknowledgement / negative acknowledgement (HARQ-ACK / NACK), scheduling request (SR), channel quality indicator (CQI), precoding matrix index (PMI), rank indicator (RI), etc.

[0100] Typically, UCI is sent periodically on the PUCCH. However, if control information and service data should be sent simultaneously, the control information and service data may be sent on the PUSCH. In addition, UCI may be sent aperiodically on the PUSCH upon receiving a request / command from the network.

[0101] 1.2. Radio resources

[0102] Figure 22 is a diagram showing a radio frame structure in an NR system to which various embodiments of the present disclosure are applicable.

[0103] The NR system can support multiple parameter sets. The parameter set can be defined by subcarrier spacing (SCS) and cyclic prefix (CP) overhead. Multiple SCSs can be derived by scaling the default SCS according to an integer N (or μ). In addition, even if it is assumed that a very small SCS is not used in a very high carrier frequency, the parameter set to be used can be selected independently of the frequency band of the cell. In addition, the NR system can support various frame structures according to multiple parameter sets.

[0104] Now, OFDM parameter sets and frame structures that can be considered for the NR system will be described. Multiple OFDM parameter sets supported by the NR system can be defined as listed in Table 1. For the bandwidth part, μ and CP are obtained from the RRC parameters provided by the BS.

[0105] [Table 1]

[0106] μ <![CDATA[Δf=2 μ ·15[kHz]]]> Cyclic prefix 0 15 normal 1 30 normal 2 60 Normal, Extended 3 120 normal 4 240 normal

[0107] In NR, multiple parameter sets (e.g., SCS) are supported to support various 5G services. For example, 15kHz SCS supports wide areas of the cellular band, 30kHz / 60kHz SCS supports dense urban areas, lower latency and wider carrier bandwidth, and 60kHz or more SCS supports bandwidths larger than 24.25GHz to overcome phase noise.

[0108] The NR band is defined by two types of frequency ranges, FR1 and FR2. FR1 can be the range below 6 GHz, and FR2 can be the range above 6 GHz, i.e., the millimeter wave (mmWave) band.

[0109] As an example, the following Table 2 defines the NR frequency band.

[0110] [Table 2]

[0111] Frequency range specification Corresponding frequency range Subcarrier spacing FR1 410MHz-7125MHz 15,30,60kHz FR2 24250MHz-52600MHz 60,120,240kHz

[0112] Regarding the frame structure in the NR system, the time domain size of various fields is expressed as the basic time unit T of NR. c =1 / (△f max *N f ), where △f max =480*10 3 Hz, and a value N related to the Fast Fourier Transform (FFT) size or the Inverse Fast Fourier Transform (IFFT) size f Given as N f =4096. c and T s(Based on LTE time units and sampling time, given as T s =1 / ((15kHz)*2048)) is set to the following relationship: T s / T c =64. DL and UL transmissions are organized as separate f =(△f max *N f / 100)*T c =10ms duration (radio) frame. Each radio frame includes 10 subframes, each subframe has T sf =(△f max *N f / 100)*T c =1 ms duration. There may be one frame set for UL and one frame set for DL. For parameter set μ, the slots are in increasing order in the subframe with n μ s ∈{0,…,N slot,μ subframe -1} and are numbered in increasing order in the radio frame. μ s,f ∈{0,…,N slot,μ frame -1} number. A time slot consists of N μ symb consecutive OFDM symbols, and N μ symb Depends on CP. Time slot n in a subframe μ s The beginning of the same subframe as OFDM symbol n μ s *N μ symb The start of is aligned in time.

[0113] Table 3 lists the number of symbols per time slot, the number of time slots per frame, and the number of time slots per subframe for each SCS in the normal CP case, and Table 4 lists the number of symbols per time slot, the number of time slots per frame, and the number of time slots per subframe for each SCS in the extended CP case.

[0114] [Table 3]

[0115]

[0116] [Table 4]

[0117]

[0118] In the above table, N slot symb represents the number of symbols in a time slot, Nframe,μ slot Represents the number of time slots in a frame, N subframe,μ slot Indicates the number of time slots in a subframe.

[0119] In the NR system to which various embodiments of the present disclosure are applicable, different OFDM (A) parameter sets (e.g., SCS, CP length, etc.) may be configured for a plurality of cells aggregated for one UE. Therefore, the (absolute time) period of time resources (collectively referred to as time units (TUs) for convenience) including the same number of symbols (e.g., subframes (SFs), time slots, or TTIs) may be configured differently for the aggregated cells.

[0120] Figure 2 An example of μ=2 (i.e., SCS of 60 kHz) is shown, where referring to Table 3, one subframe may include four time slots. Figure 2 One subframe = {1, 2, 4} time slots, which is exemplary, and the number of time slots that can be included in one subframe is defined as listed in Table 3 or Table 4.

[0121] Furthermore, a mini-slot may include 2, 4 or 7 symbols, less than 2 symbols or more than 7 symbols.

[0122] For the physical resources in the NR system, antenna ports, resource grids, resource elements, resource blocks, carrier parts, etc. can be considered. Hereinafter, the physical resources considered in the NR system will be described in detail.

[0123] First, the antenna ports may be defined such that the channel over which a symbol is transmitted on the antenna port is inferred from the channel over which another symbol is transmitted on the same antenna port. When the large-scale properties of the channel over which a symbol is transmitted on an antenna port are inferred from the channel over which a symbol is transmitted on another antenna port, the two antenna ports may be referred to as being in a quasi-co-located or quasi-co-located (QCL) relationship. The large-scale properties may include at least one of the following parameters: delay spread, Doppler spread, frequency shift, average received power, receive timing, average delay, or spatial reception (Rx). Here, the spatial Rx parameters refer to spatial (RX) channel property parameters such as angle of arrival.

[0124] Figure 3 An exemplary resource grid is shown to which various embodiments are applicable.

[0125] Reference Figure 3 , each subcarrier spacing (SCS) and carrier definition can be defined by subcarriers and 14×2 μ OFDM symbols, where Indicated by RRC signaling from BS. It may vary not only according to the SCS configuration μ, but also between UL and DL. There is one resource grid for SCS configuration μ, antenna port p, and transmission direction (i.e., UL or DL). Each element in the resource grid for subcarrier spacing configuration μ and antenna port p may be referred to as a resource element and is uniquely identified by an index pair (k, l), where k represents the index x in the frequency domain and l represents the symbol position in the frequency domain relative to a reference point. The resource element (k, l) for subcarrier spacing configuration μ and antenna port p may be a physical resource and a complex value. Resource blocks (RBs) are defined as N RB sc consecutive subcarriers (where ).

[0126] Considering that the UE cannot support the wide bandwidth supported in the NR system, the UE can be configured to operate in part of the frequency bandwidth of the cell (hereinafter referred to as the bandwidth part (BWP)).

[0127] Figure 4 is a diagram showing an example of mapping of physical channels to time slots to which various embodiments of the present disclosure are applicable.

[0128] DL control channel, DL or UL data and UL control channel may all be included in one time slot. For example, the first N symbols of the time slot (hereinafter referred to as the DL control region) may be used to send the DL control channel, and the last M symbols of the time slot (hereinafter referred to as the UL control region) may be used to send the UL control channel. N and M are each integers greater than or equal to 0. The resource region (hereinafter referred to as the data region) between the DL control region and the UL control region may be used for DL ​​data transmission or UL data transmission. The time gap for DL ​​to UL or UL to DL switching may exist between the control region and the data region. PDCCH may be sent in the DL control region, and PDSCH may be sent in the DL data region. When switching from DL to UL, some symbols in the time slot may be used as time gaps.

[0129] The BS transmits a related signal to the UE on a DL channel as described below, and the UE receives a related signal from the BS on a DL channel as described below.

[0130] PDSCH transmits DL data (e.g., DL shared channel transport block (DL-SCH TB)) and uses modulation schemes such as quadrature phase shift keying (QPSK), hexadecimal quadrature amplitude modulation (16QAM), 64QAM, or 256QAM. TB is encoded as a codeword. PDSCH can transmit up to two codewords. Scrambling and modulation mapping are performed based on the codeword, and the modulation symbols generated from each codeword are mapped to one or more layers (layer mapping). Each layer is mapped to a resource together with a demodulation reference signal (DMRS), generated as an OFDM symbol signal, and sent through the corresponding antenna port.

[0131] The PDCCH may transmit downlink control information (DCI), such as DL data scheduling information, UL data scheduling information, etc. The PUCCH may transmit uplink control information (UCI), such as ACK / NACK for DL ​​data, channel state information (CSI), scheduling request (SR), etc.

[0132] PDCCH carries downlink control information (DCI) and is modulated by quadrature phase shift keying (QPSK). One PDCCH includes 1, 2, 4, 8 or 16 control channel elements (CCEs) according to the aggregation level (AL). One CCE includes 6 resource element groups (REGs). One REG is defined by one OFDM symbol × one (P)RB.

[0133] The PDCCH is transmitted in a control resource set (CORESET). A CORESET is defined as a set of REGs with a given parameter set (e.g., SCS, CP length, etc.). Multiple CORESETs for one UE may overlap each other in the time / frequency domain. A CORESET may be configured by system information (e.g., a master information block (MIB)) or UE-specific high-layer (RRC) signaling. Specifically, the number of RBs and the number of symbols (up to 3 symbols) included in a CORESET may be configured by high-layer signaling.

[0134] The UE acquires the DCI transmitted on the PDCCH by decoding a set of PDCCH candidates (so-called blind decoding). The set of PDCCH candidates decoded by the UE is defined as a PDCCH search space set. The search space set can be a common search space (CSS) or a UE-specific search space (USS). The UE can acquire DCI by monitoring PDCCH candidates in one or more search space sets configured by MIB or high-level signaling. Each CORESET configuration is associated with one or more search space sets, and each search space set is associated with one CORESET configuration. A search space set is determined based on the following parameters.

[0135] The UE transmits a relevant signal to the BS on a UL channel described later, and the BS receives a relevant signal from the UE on the UL channel.

[0136] The PUSCH transmits UL data (e.g., UL shared channel transport block (UL-SCH TB)) and / or UCI in a cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM) waveform or a discrete Fourier transform-spreading-orthogonal multiplexing (DFT-s-OFDM) waveform. If the PUSCH is sent in a DFT-s-OFDM waveform, the UE sends the PUSCH by applying transform precoding. For example, if transform precoding is not possible (e.g., transform precoding is disabled), the UE may send the PUSCH in a CP-OFDM waveform, and if transform precoding is possible (e.g., transform precoding is enabled), the UE may send the PUSCH in a CP-OFDM waveform or a DFT-s-OFDM waveform. PUSCH transmission may be dynamically scheduled by a UL grant in a DCI, or semi-statically scheduled by higher layer signaling (e.g., RRC signaling) (and / or layer 1 (L1) signaling (e.g., PDCCH)) (configured grant). PUSCH transmission may be performed in a codebook-based or non-codebook-based manner.

[0137] PUCCH transmits UCI, HARQ-ACK and / or SR, and is classified as short PUCCH or long PUCCH according to the transmission duration of PUCCH. Table 7 lists exemplary PUCCH formats.

[0138] 1.3. Uplink Power Control

[0139] In a wireless communication system, it may be necessary to increase or decrease the transmission power of a UE and / or a mobile device depending on the situation. Controlling the transmission power of a UE and / or a mobile device may be referred to as UL power control. For example, transmission power control may be applied to meet the requirements of a BS (e.g., gNB, eNB, etc.) (e.g., signal-to-noise ratio (SNR), bit error rate (BER), block error rate (BLER), etc.).

[0140] The above power control can be performed according to an open-loop power control method and a closed-loop power control method.

[0141] Specifically, the open-loop power control method refers to a method of controlling transmission power without feedback from a transmitting device (e.g., BS, etc.) to a receiving device (e.g., UE, etc.) and / or feedback from a receiving device to a transmitting device. For example, the UE may receive a specific channel / signal (pilot channel / signal) from the BS and estimate the strength of the received power based on the received channel / signal. Then, the UE may control the transmission power based on the estimated strength of the received power.

[0142] On the other hand, the closed-loop power control method refers to a method of controlling transmission power based on feedback from a transmitting device to a receiving device and / or feedback from a receiving device to a transmitting device. For example, a BS receives a specific channel / signal from a UE and determines an optimal power level of the UE based on a power level, SNR, BER, BLER, etc. measured according to the received specific channel / signal. The BS may send information (i.e., feedback) about the determined optimal power level to the UE on a control channel, and the UE may control transmission power based on the feedback provided by the BS.

[0143] Hereinafter, a power control method for a case where a UE and / or a mobile device performs UL transmission to a BS in a wireless communication system will be described in detail. Specifically, a power control method for transmission of a sounding reference signal (SRS) will be described. In this case, a transmission timing (i.e., a transmission time unit) (i) of the SRS may be defined by a slot index (n_s) in a frame of a system frame number (SFN), a first symbol (S) in a slot, the number of consecutive symbols (L), and the like.

[0144] Power Control of SRS

[0145] Regarding SRS transmission in the active UL BWP of carrier (f) of serving cell (c), the UE may calculate a linear power value of the transmission power determined by the following equation A. Thereafter, the UE may control the transmission power by equally dividing the calculated linear power value on the antenna ports configured for SRS.

[0146] Specifically, when the UE performs SRS transmission in the active UL BWP (b) of the carrier (f) of the serving cell (c) using the SRS power control adjustment state based on index l, the UE may determine the SRS transmission power P at the SRS transmission opportunity (i) based on the following formula A: SRS,b,f,c (i,q s ,l)(dBm).

[0147] [Formula A]

[0148]

[0149] In equation A, q_s represents the open-loop power control parameters that can be configured for the SRS resource set (e.g., P_o, alpha (α), DL RS resources for path loss (PL) measurement (e.g., PL b,f,c (q d )) etc. Index l represents the index of the closed-loop power control process, and the corresponding index may be independent of or related to the PUSCH configuration. If the SRS power control is independent of the PUSCH, the maximum number of closed-loop power control processes for the SRS may be 1.

[0150] In addition, P_o (for example, P O_SRS,b,f,c (q s )) is a parameter broadcast as part of system information and may represent the target receive power of the receiver. The corresponding P_o value may be configured taking into account UE throughput, cell capacity, noise and / or interference, etc. α (e.g., α SRS,b,f,c (q s )) may represent the rate of compensating PL. α may have a value from 0 to 1, and full path loss compensation or partial path loss compensation may be performed according to the configured value. In this case, the α value may be configured in consideration of interference between UEs and / or data rate. In addition, P CMAX,f,c (i) may represent the configured UE transmission power. For example, the configured UE transmission power may be interpreted as the “configured maximum UE output power” defined in 3GPP TS 38.101-1 and / or TS 38.101-2. SRS,b,f,c (i) may represent the SRS resource allocation bandwidth, which is represented by the number of RBs in the SRS transmission opportunity based on the SCS (μ). In addition, h related to the SRS power control adjustment state b,f,c (i, l) can be configured or indicated based on the TPC command field (e.g., DCI format 2_3, etc.) and / or RRC parameters (e.g., srs-PowerControlAdjustmentStates, etc.) of the DCI received or detected by the UE.

[0151] The resources used for SRS transmission may be used as a reference to facilitate the BS and / or UE to determine the beam, panel and / or spatial domain transmission filter. Therefore, SRS transmission power control may be performed in units of beam, panel and / or spatial domain transmission filter.

[0152] The above parameters and / or information of SRS power control may be configured separately (independently) for each BWP. In this case, the corresponding parameters and / or information may be configured or indicated by high-layer signaling (e.g., RRC signaling, MAC-CE, etc.) and / or DCI. For example, the parameters and / or information of SRS power control may be provided by RRC signaling such as SRS-Config, SRS-TPC-CommandConfig, etc. Table 5 below shows the configuration of SRS-Config and SRS-TPC-CommandConfig. The definition and details of each parameter can be found in 3GPP TS Rel.1638.331.

[0153] [Table 5]

[0154]

[0155]

[0156]

[0157] The UE may determine or calculate the SRS transmission power according to the above method and send the SRS based on the determined or calculated SRS transmission power.

[0158] 1.4.QCL (quasi-co-location)

[0159] A UE may receive a list of up to M TCI state configurations to decode the PDSCH based on a detected PDCCH with DCI intended for the UE and a given cell. Here, M depends on the UE capabilities.

[0160] Each TCI state includes parameters for establishing a QCL relationship between one or two DL RSs and the DMRS ports of the PDSCH. The QCL relationship is configured by the following RRC parameters: qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS (if configured).

[0161] The QCL type of each DL RS is given by the parameter "qcl-Type" in QCL-Info and has one of the following values:

[0162] - "QCL-TypeA": {Doppler shift, Doppler spread, average delay, delay spread}

[0163] - "QCL-TypeB": {Doppler shift, Doppler spread}

[0164] - "QCL-TypeC": {Doppler shift, average delay}

[0165] - "QCL-TypeD": {spatial Rx parameters}

[0166] For example, if the target antenna port is a specific non-zero power (NZP) CSI-RS, the corresponding NZP CSI-RS antenna port may be indicated / configured to be QCL with a specific tracking reference signal (TRS) in terms of QCL type A and QCL with a specific SSB in terms of QCL type D. Upon receiving the above indication / configuration, the UE may receive the corresponding NZP CSI-RS based on the Doppler and delay values ​​measured on the QCL-TypeA TRS, and apply the receive beam used to receive the QCL-TypeD SSB to receive the corresponding NZP CSI-RS.

[0167] 2. Positioning

[0168] Positioning may refer to determining the geographic location and / or velocity of a UE based on measurements of radio signals. Location information may be requested by and reported to a client (e.g., an application) associated with the UE. Location information may also be requested by a client within or connected to the core network. Location information may be reported in a standard format (e.g., a cell-based format or geographic coordinates) along with an estimated error in the UE's location and velocity and / or a positioning method used for positioning.

[0169] 2.1. Positioning protocol configuration

[0170] Figure 5 is a diagram illustrating an exemplary positioning protocol configuration for positioning a UE, to which various embodiments are applicable.

[0171] Reference Figure 5 , LTE Positioning Protocol (LPP) can be used as a point-to-point protocol between a location server (E-SMLC and / or SLP and / or LMF) and a target device (UE and / or SET) for positioning the target device using location-related measurements obtained from one or more reference resources. The target device and the location server can exchange measurement and / or location information based on signal A and / or signal B via LPP.

[0172] NRPPa may be used to exchange information between reference sources (access nodes and / or BSs and / or TPs and / or NG-RAN nodes) and location servers.

[0173] The NRPPa protocol provides the following functions.

[0174] -E-CID position information transfer. This function allows the reference source to exchange position information with the LMF for E-CID positioning.

[0175] -OTDOA information transfer. This function allows the reference source to exchange information with the LMF for OTDOA positioning.

[0176] - Report general error conditions. This function allows reporting of general error conditions, for which no specific error message is defined.

[0177] 2.2.PRS (Positioning Reference Signal)

[0178] For such positioning, a Positioning Reference Signal (PRS) may be used. The PRS is a reference signal used to estimate the position of the UE.

[0179] LTE PRS

[0180] For example, in an LTE system, PRS may be transmitted only in a DL subframe configured for PRS transmission (hereinafter, "positioning subframe"). If both a Multimedia Broadcast Single Frequency Network (MBSFN) subframe and a non-MBSFN subframe are configured as positioning subframes, the OFDM symbol of the MBSFN subframe should have the same cyclic prefix (CP) as subframe #0. If only MBSFN subframes are configured as positioning subframes within a cell, the OFDM symbol configured for PRS in the MBSFN subframe may have an extended CP.

[0181] The sequence of PRS can be defined by Formula 1 below.

[0182] [Formula 1]

[0183]

[0184] In formula 1, n s represents the time slot number in the radio frame, and l represents the OFDM symbol number in the time slot. is expressed as The maximum value of the DL bandwidth configuration. Indicates the size of an RB in the frequency domain (e.g., 12 subcarriers).

[0185] c(i) represents a pseudo-random sequence and can be initialized by the following formula 2.

[0186] [Formula 2]

[0187]

[0188] Unless otherwise configured by higher-level equal And N CP It is 1 for normal CP and 0 for extended CP.

[0189] NRPRS

[0190] The positioning frequency layer may include one or more PRS resource sets, each of which includes one or more PRS resources.

[0191] Sequence Generation

[0192] The PRS sequence r(m) (m=0, 1, . . . ) can be defined by Equation 3.

[0193] [Formula 3]

[0194]

[0195] In Formula 1, c(i) may be a pseudo-random sequence. The pseudo-random sequence generator may be initialized by Formula 4.

[0196] [Formula 4]

[0197]

[0198] In formula 4, It can be the timeslot number in the frame in the SCS configuration μ. DL PRS sequence ID It may be given by a higher layer parameter (eg, DL-PRS-SequenceId). 1 may be the OFDM symbol in the slot to which the sequence is mapped.

[0199] Mapping of DL PRS resources to physical resources

[0200] The PRS sequence r(m) can be expressed by β PRS Scale and Map To (Specifically, by equation 5). (k, l) p，μ It can represent RE(k, l) of antenna port p and SCS configuration μ.

[0201] [Formula 5]

[0202]

[0203] m=0,1,...

[0204]

[0205]

[0206] In this article, the following conditions may have to be met:

[0207] - Included in the RBs occupied by the DL PRS resources configured for the UE;

[0208] - Symbol 1 is not used by the serving cell for any SS / PBCH block indicated by the higher layer parameter SSB-positionInBurst for DL ​​PRS sent from the serving cell or DLPRS sent from non-serving cells;

[0209] -The time slot number meets the following PRS resource set related conditions;

[0210] The time domain size of the DL PRS resource L is the first symbol of the DL PRS in the time slot, which can be given by the higher-layer parameter DL-PRS-ResourceSymbolOffset. PRS ∈{2, 4, 6, 12} can be given by the high-level parameter DL-PRS-NumSymbols. Comb size It can be given by the high-level parameter transmissionComb. PRS and Combination of Can be one of {2,2}, {4,2}, {6,2}, {12,2}, {4,4}, {12,4}, {6,6}, {12,6} and / or {12,12}. RE offset It can be given by combOffset. As shown in Table 6, the frequency offset k′ can be function.

[0211] [Table 6]

[0212]

[0213] The reference point of k=0 may be the position of point A in the positioning frequency layer where the DL PRS resource is configured. Point A may be given by a higher layer parameter dl-PRS-PointA-r16.

[0214] Mapping of DL PRS resource sets to time slots

[0215] The DL PRS resources included in the DL PRS resource set may be transmitted in a slot and a frame satisfying Equation 6 below.

[0216] [Formula 6]

[0217]

[0218] It can be the number of time slots per frame in the SCS configuration μ. It can be the System Frame Number (SFN). It can be the number of time slots in a frame in the SCS configuration μ. Time slot offset It can be given by the higher-level parameter DL-PRS-ResourceSetSlotOffset. It can be given by the higher-layer parameter DL-PRS-ResourceSlotOffset. It can be given by the higher-level parameter DL-PRS-Periodicity. It can be given by the higher-level parameter DL-PRS-ResourceRepetitionFactor. It can be given by the higher-level parameter DL-PRS-MutingBitRepetitionFactor. It can be given by the higher-level parameter DL-PRS-ResourceTimeGap.

[0219] UE Positioning Architecture

[0220] Figure 6The architecture of a 5G system suitable for positioning of UEs connected to NG-RAN or E-UTRAN is shown.

[0221] Reference Figure 6 , the AMF may receive a request for location services associated with a specific target UE from another entity such as a Gateway Mobile Location Center (GMLC), or the AMF itself decides to initiate location services on behalf of a specific target UE. The AMF then sends a location service request to the Location Management Function (LMF). Upon receiving the location service request, the LMF may process the location service request and then return the processing result including the estimated location of the UE to the AMF. In the event that an entity other than the AMF, such as a GMLC, requests location services, the AMF may send the processing result received from the LMF to the entity.

[0222] Next generation evolved NB (ng-eNB) and gNB are network elements of NG-RAN that can provide measurement results for positioning. ng-eNB and gNB can measure the radio signal of the target UE and send the measurement result value to LMF. ng-eNB can control multiple TPs (e.g., remote radio head or PRS-only TP) to support the PRS-based beacon system of E-UTRA.

[0223] The LMF is connected to an Enhanced Serving Mobile Location Center (E-SMLC), which enables the LMF to access E-UTRAN. For example, the E-SMLC enables the LMF to use DL measurements obtained by the target UE through signals sent by eNB and / or PRS TP only in E-UTRAN to support OTDOA, which is one of the positioning methods of E-UTRAN.

[0224] The LMF may be connected to a SUPL Location Platform (SLP). The LMF may support and manage different location services for the target UE. The LMF may interact with the serving ng-eNB or serving gNB of the target UE in order to obtain the location measurement of the UE. For the positioning of the target UE, the LMF may determine the positioning method based on the location service (LCS) client type, the required quality of service (QoS), the UE positioning capabilities, the gNB positioning capabilities, and the ng-eNB positioning capabilities, and then apply these positioning methods to the serving gNB and / or serving ng-eNB. The LMF may determine additional information such as the accuracy of the position estimate and the speed of the target UE. The SLP is the Secure User Plane Location (SUPL) entity responsible for positioning on the user plane.

[0225] The UE may measure its position using the DL RS sent by the NG-RAN and E-UTRAN. The DL RS sent by the NG-RAN and E-UTRAN to the UE may include SS / PBCH blocks, CSI-RS and / or PRS. Which DL RS is used to measure the position of the UE may conform to the configuration of LMF / E-SMLC / ng-eNB / E-UTRAN, etc. The position of the UE may be measured through a RAT independent scheme using different global navigation satellite systems (GNSS), ground beacon systems (TBS), WLAN access points, Bluetooth beacons, and sensors installed in the UE (e.g., air pressure sensors). The UE may also include an LCS application or access the LCS application through communication with the network accessed thereby or through another application included therein. The LCS application may include measurement and calculation functions required to determine the position of the UE. For example, the UE may include an independent positioning function such as a global positioning system (GPS) and report its position independently of NG-RAN transmission. This independently obtained positioning information may be used as auxiliary information for positioning information obtained from the network.

[0226] 2.4. Operations for UE positioning

[0227] Figure 7 An implementation example of a network for UE positioning is shown.

[0228] When the AMF receives a location service request while the UE is in the Connection Management (CM)-IDLE state, the AMF may request the network to trigger the service in order to establish a signaling connection with the UE and assign a specific serving gNB or ng-eNB. Figure 7 This operation process is omitted in Figure 7 In the present embodiment, it is assumed that the UE is in connected mode. However, as a result of signaling and data inactivity, the NG-RAN may release the signaling connection while the positioning procedure is still in progress.

[0229] Now refer to Figure 7 The network operation process for UE positioning is described in detail. In step 1a, a 5GC entity such as a GMLC may send a request for a location service for measuring the location of a target UE to a serving AMF. Here, even when the GMLC does not request a location service, the serving AMF may determine that a location service is required for measuring the location of the target UE according to step 1b. For example, the serving AMF may determine that it will perform a location service in order to measure the location of the UE for an emergency call.

[0230] In step 2, the AMF transmits a location service request to the LMF. In step 3a, the LMF may initiate a location procedure with the serving ng-eNB or serving gNB to obtain location measurement data or location measurement assistance data. For example, the LMF may send a request for location-related information associated with one or more UEs to the NG-RAN, and indicate the type of necessary location information and the associated QoS. The NG-RAN may then transmit the location-related information to the LMF in response to the request. In this case, when the location determination method according to the request is an enhanced cell ID (E-CID) scheme, the NG-RAN may transmit additional location-related information to the LMF in one or more NR Positioning Protocol A (NRPPa) messages. Here, "location-related information" may mean all values ​​used for location calculation, such as actual location estimate information and radio measurements or location measurements. The protocol used in step 3a may be the NRPPa protocol (to be described later).

[0231] In addition, in step 3b, the LMF may initiate a location process for DL ​​positioning together with the UE. For example, the LMF may send location assistance data to the UE or obtain a location estimate or location measurement. For example, in step 3b, a capability information transmission process may be performed. Specifically, the LMF may send a request for capability information to the UE, and the UE may send the capability information to the LMF. Here, the capability information may include information about positioning methods that the LMF or UE can support, information about various aspects of a specific positioning method (for example, various types of assistance data for A-GNSS), and information about common features that are not specific to any one positioning method (for example, the ability to handle multiple LPP transactions). In some cases, even though the LMF does not send a request for capability information, the UE may provide capability information to the LMF.

[0232] As another example, in step 3b, a location assistance data transmission process may be performed. Specifically, the UE may send a request for location assistance data to the LMF and indicate to the LMF the specific location assistance data required. The LMF may then transmit the corresponding location assistance data to the UE and transmit the additional assistance data to the UE in one or more additional LTE Positioning Protocol (LPP) messages. The location assistance data transmitted from the LMF to the UE may be sent in a unicast manner. In some cases, the LMF may transmit the location assistance data and / or additional assistance data to the UE without receiving a request for assistance data from the UE.

[0233] As another example, in step 3b, a location information transmission process may be performed. Specifically, the LMF may send a request for location (related) information associated with the UE to the UE, and indicate the type of necessary location information and the associated QoS. In response to the request, the UE may transmit location-related information to the LMF. In addition, the UE may transmit additional location-related information to the LMF in one or more LPP messages. Here, "location-related information" may mean all values ​​used for location calculation, such as actual location estimate information and radio measurements or location measurements. Typically, location-related information may be a reference signal time difference (RSTD) value measured by the UE based on a DL RS sent to the UE by multiple NG-RANs and / or E-UTRANs. Similar to the above description, the UE may transmit location-related information to the LMF without receiving a request from the LMF.

[0234] The process implemented in step 3b can be performed independently, but can be performed continuously. Generally, although step 3b is performed in the order of capability information transmission process, location assistance data transmission process and location information transmission process, step 3b is not limited to this order. In other words, step 3b does not need to be performed in a specific order to improve the flexibility of positioning. For example, the UE may request location assistance data at any time in order to execute a location measurement request previously made by the LMF. In the event that the location information sent by the UE does not meet the required QoS, the LMF may also request location information (e.g., location measurement value or location estimate) at any time. Similarly, when the UE does not perform measurements for location estimation, the UE may send capability information to the LMF at any time.

[0235] In step 3b, when there is an error in the information or request exchanged between the LMF and the UE, an error message may be sent and received, and a termination message for terminating positioning may be sent and received.

[0236] The protocol used in step 3b may be the LPP protocol (to be described later).

[0237] Step 3b may be performed additionally after step 3a, but may be performed instead of step 3a.

[0238] In step 4, the LMF may provide a location service response to the AMF. The location service response may include information on whether the UE positioning is successful and include the UE's location estimate. Figure 7 If the process is initiated through step 1b, the AMF may transmit a location service response to the 5GC entity (e.g., GMLC). Fig. 9 process, the AMF can use the location service response to provide location services related to the emergency call.

[0239] 2.5. Positioning Protocol

[0240] LTE Positioning Protocol (LPP)

[0241] Figure 8 An exemplary protocol layer for supporting LPP message transmission between LMF and UE is shown. LPP protocol data unit (PDU) can be carried in NAS PDU between AMF and UE.

[0242] Reference Figure 8 , LPP terminates between the target device (e.g., UE in the control plane or SUPL enabled terminal (SET) in the user plane) and the location server (e.g., LMF in the control plane or SLP in the user plane). LPP messages can be carried as transparent PDUs across intermediate network interfaces using appropriate protocols (e.g., NGAP via NG-C interface and NAS / RRC via LTE-Uu and NR-Uu interfaces). LPP is intended to allow the use of various positioning methods for positioning of NR and LTE.

[0243] For example, the target device and the location server may exchange capability information, assistance data for positioning, and / or location information between them through LPP. The target device and the location server may exchange error information and / or indicate termination of the LPP process through LPP messages.

[0244] NR Positioning Protocol A (NRPPa)

[0245] Fig. 9 An exemplary protocol layer for supporting NRPPa PDU delivery between LMF and NG-RAN nodes is shown.

[0246] NRPPa can be used to carry information between NG-RAN nodes and LMF. Specifically, NRPPa can carry E-CID for measurement, data for supporting OTDOA positioning method, and cell ID and cell location ID for supporting NR cell ID positioning method transmitted from ng-eNB to LMF. AMF can route NRPPa PDU based on the routing ID of the LMF involved via the NG-C interface without information about the relevant NRPPa transaction.

[0247] The NRPPa procedures for location and data collection can be divided into two types. The first type is a UE-associated procedure for transmitting information about a specific UE (e.g., location measurement information), and the second type is a non-UE-associated procedure for transmitting information applicable to NG-RAN nodes and associated TPs (e.g., gNB / ng-eNB / TP timing information). These two types can be supported independently or simultaneously.

[0248] 2.6. Positioning measurement method

[0249] Positioning methods supported in NG-RAN may include GNSS, OTDOA, E-CID, air pressure sensor positioning, WLAN positioning, Bluetooth positioning, TBS, uplink time difference of arrival (UTDOA), etc. Although any one positioning method may be used for UE positioning, two or more positioning methods may be used for UE positioning.

[0250] OTDOA (Observed Time Difference of Arrival)

[0251] Fig.10 is a diagram illustrating an observed time difference of arrival (OTDOA) positioning method to which various embodiments are applicable.

[0252] The OTDOA positioning method uses the time measured for DL ​​signals received by the UE from multiple TPs including eNB, ng-eNB, and PRS-only TPs. The UE uses the location assistance data received from the location server to measure the time of the received DL signals. The location of the UE can be determined based on such measurement results and the geographic coordinates of neighboring TPs.

[0253] A UE connected to a gNB may request a measurement gap from a TP to perform OTDOA measurements. If the UE does not know the SFN of at least one TP in the OTDOA assistance data, the UE may use autonomous gaps to obtain the SFN of the OTDOA reference cell before requesting a measurement gap for performing reference signal time difference (RSTD) measurements.

[0254] Here, RSTD may be defined as the minimum relative time difference between two subframe boundaries received from the reference cell and the measurement cell. That is, RSTD may be calculated as the relative time difference between the start time of the subframe received from the measurement cell and the start time of the subframe from the reference cell that is closest to the subframe received from the measurement cell. The reference cell may be selected by the UE.

[0255] For accurate OTDOA measurement, it is necessary to measure the time of arrival (ToA) of signals received from three or more geographically distributed TPs or BSs. For example, the ToA of each of TP 1, TP 2, and TP 3 may be measured, and the RSTD of TP 1 and TP 2, the RSTD of TP 2 and TP 3, and the RSTD of TP 3 and TP 1 may be calculated based on the three ToA values. A geometric hyperbola is determined based on the calculated RSTD values, and the point where the hyperbola intersects may be estimated as the position of the UE. In this case, the accuracy and / or uncertainty of each ToA measurement may occur, and according to the measurement uncertainty, the estimated position of the UE may be referred to as a specific range.

[0256] For example, the RSTD of two TPs may be calculated based on the following Equation 7.

[0257] [Formula 7]

[0258]

[0259] In Equation 7, c is the speed of light, {x t ,y t} are the (unknown) coordinates of the target UE, {x i ,y i} are the (known) coordinates of TP, {x 1 ,y 1} are the coordinates of the reference TP (or another TP). Here, (T i -T 1 ) is the transmission time offset between the two TPs, called the “real time difference” (RTD), n i and n 1 is the UE ToA measurement error value.

[0260] E-CID (Enhanced Cell ID)

[0261] In the cell ID (CID) positioning method, the location of the UE can be measured based on the geographic information of the UE's serving ng-eNB, serving gNB and / or serving cell. For example, the geographic information of the serving ng-eNB, serving gNB and / or serving cell can be obtained through paging, registration, etc.

[0262] In addition to the CID positioning method, the E-CID positioning method may use additional UE measurements and / or NG-RAN radio resources to improve the UE position estimate. Although the E-CID positioning method may partially utilize the same measurement method as the measurement control system on the RRC protocol, additional measurements only for UE position measurement are generally not performed. In other words, no additional measurement configuration or measurement control message may be provided for UE position measurement. The UE is not expected to request additional measurement operations only for position measurement, and the UE may report measurement values ​​obtained by a generally measurable method.

[0263] For example, the serving gNB may use the E-UTRA measurements provided by the UE to implement the E-CID positioning method.

[0264] For example, the measurement elements that can be used for E-CID positioning may be as follows.

[0265] -UE measurements: E-UTRA Reference Signal Received Power (RSRP), E-UTRA Reference Signal Received Quality (RSRQ), UE E-UTRA Receive (Rx)-Transmit (Tx) Time Difference, GERAN / WLAN Reference Signal Strength Indicator (RSSI), UTRAN Common Pilot Channel (CPICH) Received Signal Code Power (RSCP) and / or UTRAN CPICH Ec / Io

[0266] -E-UTRAN measurements: ng-eNB Rx-Tx time difference, timing advance (T ADV ) and / or AoA

[0267] Here, T ADV It can be divided into type 1 and type 2 as follows.

[0268] T ADV Type 1 = (ng-eNB Rx-Tx time difference) + (UE E-UTRA Rx-Tx time difference)

[0269] T ADV Type 2 = ng-eNB Rx-Tx time difference

[0270] AoA can be used to measure the direction of the UE. AoA is defined as the estimated counterclockwise angle of the UE relative to the eNB / TP. In this case, the geographic reference direction can be north. The eNB / TP can use UL signals such as SRS and / or DMRS to perform AoA measurements. The measurement accuracy of AoA increases with the increase of antenna array arrangement. When the antenna array is arranged at the same interval, the signals received at adjacent antenna elements can have a constant phase rotation.

[0271] Multi-RTT (multi-cell RTT)

[0272] Fig.11 is a diagram illustrating an exemplary multi-RTT positioning method to which various embodiments of the present disclosure are applicable.

[0273] Reference Fig.11 (a) shows RTT processing, where the initiating device and the responding device perform TOA measurement, and the responding device provides the TOA measurement 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.

[0274] In operation 1301, according to an exemplary embodiment, an initiating device may send an RTT measurement request, and a responding device may receive the RTT measurement request.

[0275] In operation 1303, according to an exemplary embodiment, the initiating device may, at time t 0 Send RTT measurement signal, and the responding device can obtain TOA measurement t 1 .

[0276] In operation 1305, according to an exemplary embodiment, the response device may 2 By sending the RTT measurement signal, the initiating device can obtain the TOA measurement t 3 .

[0277] In operation 1307, according to an exemplary embodiment, the responding device may send a message regarding [t 2 -t 1 ], the initiating device may receive the corresponding information and calculate the RTT based on the following formula 8. The corresponding information may be sent and received through a separate signal or in the RTT measurement signal of operation 1305.

[0278] [Formula 8]

[0279] RTT = t 3 -t 0 -[t 2 -t 1 ]

[0280] Reference Fig.11 (b), the RTT may correspond to a dual range measurement between the two devices. Position estimation may be performed from the corresponding information, and multilateration may be used for position estimation. 1 ,d 2 and d 3 can be determined based on the measured RTT, and the location of the target device can be determined as BS 1 ,BS 2 and BS 3 (or TRP) with a radius d as the center 1 ,d 2 and d 3 The intersection of the circles.

[0281] 2.7. Detection process

[0282] In a wireless communication system to which various embodiments are applicable, an SRS for positioning may be used.

[0283] The SRS-Config information element (IE) may be used to configure SRS transmission. (Lists of) SRS resources and / or (lists of) SRS resource sets may be defined, and each resource set may be defined as a collection of SRS resources.

[0284] The SRS-Config IE may separately include configuration information about the SRS (for other purposes) and configuration information about the SRS used for positioning. For example, configuration information about the SRS resource set (e.g., SRS-ResourceSet) of the SRS (for other purposes) and configuration information about the SRS resource set (e.g., SRS-PosResourceSet) of the SRS used for positioning may be separately included. In addition, configuration information about the SRS resources (e.g., SRS-ResourceSet) of the SRS (for other purposes) and configuration information about the SRS resources (e.g., SRS-PosResource) of the SRS used for positioning may be separately included.

[0285] The SRS resource set for positioning may include one or more SRS resources for positioning. The configuration information about the SRS resource set for positioning may include: information about an identifier (ID) assigned / allocated / related to the SRS resource set for positioning; and information about an ID assigned / allocated / related to each of the one or more SRS resources for positioning. For example, the configuration information about the SRS resource for positioning may include an ID assigned / allocated / related to a UL resource. In addition, each SRS resource / SRS resource set for positioning may be identified based on each ID assigned / allocated / related to it.

[0286] SRS can be configured periodically / semi-persistently / aperiodically.

[0287] Aperiodic SRS may be triggered by DCI. DCI may include an SRS request field.

[0288] Table 7 shows an exemplary SRS request field.

[0289] [Table 7]

[0290]

[0291] In Table 7, srs-TPC-PDCCH-Group is a parameter used to set the trigger type of SRS transmission to type A or type B, aperiodicSRS-ResourceTriggerList is a parameter used to configure an additional DCI code point list, where the UE needs to send SRS according to the SRS resource set configuration, aperiodicSRS-ResourceTrigger is a parameter used to configure the DCI code point, where the SRS needs to be sent according to the SRS resource set configuration, and resourceType is a parameter used to configure the (periodic / semi-static / non-periodic) time domain behavior of the SRS resource configuration.

[0292] 3. Various Implementation Methods

[0293] Various embodiments will be described in detail based on the above technical concept. The above contents of Sections 1 and 2 are applicable to various embodiments described below. For example, operations, functions, terms, etc. not defined in various embodiments can be performed and described based on Sections 1 and 2.

[0294] Symbols / abbreviations / terms used in the description of the various embodiments may be defined as follows.

[0295] -A / B / C: A and / or B and / or C

[0296] -AOA(AoA): Angle of Arrival

[0297] -comb: comb (comb teeth) may refer to a method of mapping a signal at regular intervals in the frequency domain. For example, comb 2 (comb-2 or 2-comb) may mean mapping the same specific RS to each RE separated by two subcarriers. Comb 4 (comb-4 or 4-comb) may mean mapping the same specific RS to each RE separated by four subcarriers.

[0298] -CSI-RS: Channel State Information Reference Signal

[0299] -LMF: Location Management Function

[0300] -OTDOA (OTDoA): Observed Time Difference of Arrival

[0301] -PRS: Positioning Reference Signal

[0302] -RAT: Radio Access Technology

[0303] -RS: Reference signal

[0304] -RTT: Round Trip Time

[0305] -RSRP: Reference Signal Received Power

[0306] -RSRQ: Reference Signal Received Quality

[0307] -RSTD: Reference Signal Time Difference / Relative Signal Time Difference

[0308] -SRS: SRS is an abbreviation for sounding reference signal. According to various embodiments, SRS may be used for UL channel estimation and positioning measurement based on multiple-input multiple-output (MIMO). In other words, according to various embodiments, SRS may include normal SRS and positioning SRS. According to various embodiments, positioning SRS may be understood as UL RS configured and / or used for UE positioning. According to various embodiments, normal SRS is different from positioning SRS. Specifically, normal SRS may be understood as UL RS configured and / or used for UL channel estimation (in addition or alternatively, normal SRS may be understood as UL RS configured and / or used for UL channel estimation and positioning). According to various embodiments, positioning SRS may also be referred to as SRS for positioning. In the description of various embodiments, the following terms: "positioning SRS" and "SRS for positioning" may be used interchangeably and are understood to have the same meaning. According to various embodiments, normal SRS may also be referred to as traditional SRS, MIMO SRS, SRS for MIMO, etc. In the description of various embodiments, the following terms: "normal SRS", "legacy SRS", "MIMO SRS", and "SRS for MIMO" may be used interchangeably and are understood to have the same meaning. For example, normal SRS and positioning SRS may be configured / indicated separately. For example, normal SRS and positioning SRS may be configured / indicated by different IEs (information elements) of a higher layer. For example, normal SRS may be configured based on SRS-resource, and positioning SRS may be configured based on SRS-PosResource.

[0309] -SS: synchronization signal

[0310] -SSB: Synchronization Signal Block

[0311] -SS / PBCH: Synchronization Signal / Physical Broadcast Channel

[0312] -TDOA (TDoA): Timing Difference of Arrival

[0313] -TRP: Transmit and Receive Point (TP: Transmission Point)

[0314] -posSIB: posSIB may refer to a system information block (SIB) that includes information related to positioning. For example, posSIB may include assistance data for positioning. The assistance data may be included in a subfield (e.g., SIBpos) in posSIB. The assistance data may include a PRS ID for identifying a DL PRS resource. The assistance data may be configured by a server / LMF, and the assistance data may be sent to the UE in posSIB by the BS.

[0315] -ceil(x): Represents a ceiling operation or function. Ceil(x) may mean the smallest integer greater than or equal to the real number x and / or an integer greater than or equal to the real number x.

[0316] -floor(x): Represents a floor operation or function. Floor(x) can mean the largest integer less than or equal to the real number x and / or an integer less than or equal to the real number x.

[0317] In the description of various embodiments of the present disclosure, the term BS should be understood as an inclusive term including remote radio head (RRH), eNB, gNB, TP, reception point (RP), repeater, etc.

[0318] In the description of various embodiments of the present disclosure, when it is said that something exceeds / is greater than or is equal to A, it may be interpreted to mean that A exceeds or is equal to / is greater than A.

[0319] In the description of various embodiments of the present disclosure, when it is said that something is less than / less than or equal to B, it can be interpreted as meaning that the thing is less than or equal to / less than B.

[0320] In the description of various embodiments, the cell / BS / TRP ID may be understood as a d1-PRS-ID. The following Table 8 shows the definition of d1-PRS-ID.

[0321] [Table 8]

[0322] -DL-PRS-ID-Info IE DL-PRS-ID-Info provides the ID of the DL-PRS resource referring to the TRP.

[0323]

[0324] Table 9 below shows an exemplary PRS reception process to which various embodiments are applicable.

[0325] [Table 9]

[0326]

[0327]

[0328]

[0329]

[0330] Unless otherwise specified, (all) operations of the UE according to various embodiments may be configured / instructed by the BS / location server / network. Additionally / alternatively, the operations may be defined as default operations performed in the absence of explicit / implicit configuration / instructions.

[0331] Various embodiments may be related to a UE reporting the UE's DL PRS processing capability. For example, various embodiments may be related to a signaling method by which the UE informs the network (eg, BS / location server / LMF) of the UE's DL PRS processing capability.

[0332] Various embodiments may be related to the priority between the configured PRSs. For example, when the configured PRS exceeds the capabilities of the UE, it may be necessary to determine / define the priority rules for the UE to select and process the PRS. For example, according to various embodiments, the reference configuration configured to obtain / determine the reference timing may have the highest priority, and the priority may be defined / determined / configured in descending order of the cell / BS / TRP ID, the descending order of the PRS resource ID, and / or the descending order of the PRS resource set ID. However, various embodiments are not limited thereto, and other embodiments may be provided.

[0333] Fig.12 is a diagram schematically illustrating a method of operating a UE, a TRP, a location server and / or a LMF according to various embodiments.

[0334] Reference Fig.12 In operation 1201 according to various embodiments, the location server and / or the LMF may send configuration information to the UE, and the UE may receive the configuration information.

[0335] In operation 1203 according to various embodiments, the location server and / or LMF may send reference configuration information to the TRP, and the TRP may receive the reference configuration information. In operation 1205 according to various embodiments, the TRP may forward the reference configuration information to the UE, and the UE may receive the reference configuration information. In this case, operation 1201 according to various embodiments may be omitted.

[0336] On the contrary, operations 1203 and 1205 according to various embodiments may be omitted. In this case, operation 1201 according to various embodiments may be performed.

[0337] That is, operation 1201 according to various embodiments and operations 1203 and 1205 according to various embodiments may be mutually exclusive.

[0338] In operation 1207 according to various embodiments, the TRP may send a signal related to the configuration information to the UE, and the UE may receive the signal related to the configuration information. For example, the signal related to the configuration information may be a signal for positioning of the UE.

[0339] In operation 1209 according to various embodiments, the UE may send a positioning-related signal to the TRP, and the TRP may receive the positioning-related signal. In operation 1211 according to various embodiments, the TRP may forward the positioning-related signal to the location server and / or the LMF, and the location server and / or the LMF may receive the positioning-related signal.

[0340] In operation 1213 according to various embodiments, the UE may send a signal related to positioning to the location server and / or LMF, and the location server and / or LMF may receive the signal related to positioning. In this case, operations 1209 and 1211 according to various embodiments may be omitted.

[0341] In contrast, operation 1213 according to various embodiments may be omitted. In this case, operations 1211 and 1213 according to various embodiments may be performed.

[0342] That is, operations 1209 and 1211 according to various embodiments and operation 1213 according to various embodiments may be mutually exclusive.

[0343] According to various embodiments, a signal related to positioning may be obtained based on configuration information and / or a signal related to the configuration information.

[0344] Fig.13 is a diagram schematically illustrating a method of operating a UE, a TRP, a location server and / or a LMF according to various embodiments.

[0345] Reference Fig.13 (a), in operation 1301 (a) according to various embodiments, the UE may receive configuration information.

[0346] In operation 1303 ( a ) according to various embodiments, the UE may receive a signal related to configuration information.

[0347] In operation 1305 ( a ) according to various embodiments, the UE may send positioning-related information.

[0348] Reference Fig.13 (b), in operation 1301 (b) according to various embodiments, the TRP may receive configuration information from the location server and / or LMF and forward the configuration information to the UE.

[0349] In operation 1303(b) according to various embodiments, the TRP may send a signal related to the configuration information.

[0350] In operation 1305(b) according to various embodiments, the TRP may receive positioning-related information and forward the positioning-related information to a location server and / or LMF.

[0351] Reference Fig.13 (c), in operation 1301(c) according to various embodiments, the location server and / or LMF may send configuration information.

[0352] In operation 1305(c) according to various embodiments, the location server and / or LMF may receive positioning-related information.

[0353] For example, in the following description of various embodiments, the above configuration information may be understood to be related to a reference configuration (information), a standard configuration (information), a negotiated configuration (information) and / or one or more pieces of information sent / configured to the UE by a location server, LMF and / or TRP. Additionally / alternatively, the configuration information may be interpreted to mean one or more pieces of information sent / configured to the UE by a corresponding reference configuration (information), a standard configuration (information), a negotiated configuration (information) and / or a location server, LMF and / or TRP.

[0354] For example, in the following description of various embodiments, the above-mentioned positioning-related signal may be understood as a signal related to one or more pieces of information reported by the UE. Additionally / alternatively, the positioning-related signal may be understood as a signal including one or more pieces of information reported by the UE.

[0355] For example, in the following description of various embodiments, BS, gNB, cell, etc. may be replaced by TRP, TP, or any device that performs the same function.

[0356] For example, in the following description of various embodiments, the location server may be replaced with an LMF or any device that performs the same function.

[0357] Specific operations, functions, terms, etc. in the operations according to various exemplary embodiments may be performed and explained based on various embodiments described later. On the other hand, the operations according to various exemplary embodiments are only exemplary, and one or more of the above operations may be omitted according to the details of each embodiment.

[0358] Hereinafter, various embodiments will be described in detail. It can be understood by those skilled in the art that, unless mutually exclusive, the various embodiments described below can be combined in whole or in part to implement other embodiments.

[0359] According to various embodiments, UE capability report of PRS processing may be considered. For example, at least one of the following may be considered for UE's DL PRS processing capability.

[0360] The UE DL PRS processing capability may be reported for the maximum DL PRS bandwidth (in MHz) supported and / or reported by the UE. For example, the value of the maximum DL PRS bandwidth for reporting the UE DL PRS processing capability may be predefined / determined / configured and / or explicitly / implicitly configured / indicated.

[0361] For example, the UE may not be expected to support DL PRS bandwidths exceeding the reported DL PRS bandwidth value.

[0362] For example, UE DL PRS processing capability may scale inversely with DL PRS processing bandwidth, and vice versa.

[0363] For example, the DL PRS processing capability may be signaled for each frequency band.

[0364] For example, the UE DL PRS processing capability may be independent of (agnostic of) the (SCS) configured for DL ​​PRS and vice versa.

[0365] For example, the UE DL PRS processing capability may be defined for a single positioning frequency layer.

[0366] For example, the UE DL PRS processing capability may be independent of (agnostic of) the DL PRS comb factor configuration.

[0367] For example, with respect to multiple frequency layers, for a UE supporting multiple positioning frequency layers, the UE may be expected to process one frequency layer at a time. If the UE reports that the UE supports (N1, N2, T) for one frequency layer and supports K frequency layers, the corresponding UE may support DL PRS processing capabilities of (N1, N2, K*T) in all K frequency layers.

[0368] For example, N1 may correspond to the number of PRS symbols that the UE can process within T milliseconds (msec or ms) (T ms).

[0369] For example, N2 may be the number of PRS resources that the UE can process within T msec.

[0370] In the following description of various embodiments, unless otherwise specified, the above definitions of N1, N2, and T may equally apply.

[0371] For example, the DL PRS processing capability of the UE may be reported for each frequency band. Various embodiments may be related to a specific method of PRS processing capability (and / or its reporting). Various embodiments may be related to the definition of PRS processing capability when supporting simultaneous processing in different radio access technologies (RATs) (e.g., LTE and NR).

[0372] NR PRS processing capabilities (considering beam-related issues)

[0373] According to various embodiments, the UE may report information about the time N ms during a specific time (eg, Tms) that the UE can process the PRS to the BS / location server / LMF. For example, the UE may report (N, T).

[0374] Additionally and / or separately, according to various embodiments, the UE may report the number N2 of PRS resources that can be processed within N ms. For example, the UE may report (N1, N2, T).

[0375] Additionally and / or separately, it may be necessary to report to the network how many PRS resources the UE can simultaneously receive in a specific symbol. Even if the UE can process N2 (>0) PRS resources within time N (e.g., N ms), this information (i.e., information that the UE can process N2 PRS resources within time N) may not mean that the UE can process N2 PRS resources in a specific symbol and / or in multiple symbols. For example, the number of receive beams in which the UE can simultaneously receive PRS resources in different directions may be less than N2. That is, even if UE capability signaling of (N, T) and / or (N1, N2, T) is defined and the UE reports the UE capability, this information (signaling) may not be sufficient for the BS / location server / LMF to configure PRS resources for the UE.

[0376] For example, if the PRS resource has a frequency RE pattern set to 4 comb teeth, a total of four PRS REs may be distributed one by one on four symbols. These PRS resources may be sent in different (physical) cells / BSs / TRPs. The UE may not configure / use appropriate receive beams for each PRS resource, and the measurement quality of a particular PRS resource may be significantly reduced below a certain level. Therefore, it may be necessary for the BS / location server / LMF to configure / indicate PRS resources to the UE and / or configure / instruct the UE to report PRS resource measurements considering these points (e.g., UE receive beams, etc.).

[0377] Proposal #1

[0378] According to various embodiments, the UE may send at least one of the following information to the BS / location server / LMF as information on the UE's DL PRS processing capability. According to various embodiments, at least one of the following options may be considered to report the UE's DL PRS processing capability.

[0379] Option 1

[0380] Report (N, N2, N3, T) or (N, N3, T). In this case, information about N3 may be reported additionally and / or separately. For example, N3 may be reported separately, and / or (N1, N2, N3, T) and / or (N, N3, T) may be reported. Additionally / alternatively, at least one parameter other than N3 may also be reported separately. According to various embodiments, N3 may be defined / interpreted / used according to at least one option to be described in Alternative 2.

[0381] Option 2

[0382] (N, N2, N3, T, PRS_BW) or (N, N3, T, PRS_BW) may be reported. In this case, information about N3 and / or PRS_BW may be reported additionally and / or separately. For example, N3 and / or PRS_BW may be reported separately, and / or (N1, N2, N3, T, PRS_BW) and / or (N, N3, T, PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than N3 and / or PRS_BW may also be reported separately.

[0383] Definitions of various parameters in Alternative 1 and / or Alternative 2 according to various embodiments will be described. For example, N2 may mean the number of PRS resources that the UE can process within a time unit N (e.g., N ms) (N2: the number of PRS resources that the UE can process within a time unit N (e.g., N ms)).

[0384] In alternative 1 and / or alternative 2 according to various embodiments, N3 may be defined / interpreted / used according to at least one of the following options. Unless otherwise specified, the definition of N3 described later may generally be applied in the description of various embodiments.

[0385] Option #1

[0386] The number of PRS resources that a UE can simultaneously receive in a specific OFDM symbol.

[0387] Option #2

[0388] The number of different QCL type D configurations that a UE can use simultaneously in a specific OFDM symbol. That is, the definition of N3 can be understood as the number of DL PRS resources with different QCL type D configurations. For example, M (> N2) PRS resources can be divided into N2 groups / sets, and the same QCL type D can be configured / indicated for PRS resources belonging to the same group / set.

[0389] Option #3

[0390] The number of (physical) cells / BSs / TRPs that simultaneously transmit PRS resources in a specific OFDM symbol.

[0391] Option #4

[0392] The number of reception panels that the UE can use to simultaneously receive the DL PRS and / or the number of reception antenna groups that the UE can use to simultaneously receive the DL PRS.

[0393] In the description of various embodiments, the term "panel" may be interpreted differently as follows: a group of UE antenna elements, a group of UE antenna ports, and / or a group of UE logical antennas. For example, in order to determine which physical / logical antennas and / or which antenna ports are bound and mapped to a panel, the location / distance / correlation / RF (radio frequency) configuration / antenna (port) virtualization between antennas may be considered in various ways. This mapping process may vary depending on the implementation of the UE.

[0394] Additionally / alternatively, in the description of various embodiments, the term "panel" may mean a plurality of panels and / or a group of panels (i.e., panels having similarities with respect to a particular characteristic (e.g., the difference between values ​​associated with the particular characteristic is within a specified range and / or is less than or equal to a specified threshold)).

[0395] PRS_BW: In Alternative 2 according to various embodiments, PRS_BW may mean a specific PRS bandwidth and / or a maximum PRS bandwidth that the UE can process. For example, the UE may report the DLPRS processing capability for a specific PRS bandwidth and / or a maximum PRS bandwidth to the BS / location server / LMF as described in Alternative 2. Unless otherwise specified, the definition of PRS_BW may generally apply in the description of various embodiments.

[0396] According to various embodiments, reporting of N3 (and / or PRS_BW) may be performed as a tuple (e.g., N3 may be reported as a tuple together with (N, N2, T) and / or (N, T)). Additionally / alternatively, reporting of N3 may be performed independently and individually (e.g., N3 may be reported separately from (N, N2, T) and / or (N, T)).

[0397] According to various embodiments, UE capability reporting may be performed for each frequency band and / or each frequency layer. Additionally / alternatively, according to various embodiments, the UE may report one UE capability for each specific frequency band combination and / or each specific frequency layer combination (according to the above embodiments) by considering that PRS can be sent simultaneously in multiple frequency layers and / or multiple frequency bands.

[0398] Additionally and / or separately, in alternative 1 and / or alternative 2 according to various embodiments, the UE may report whether the UE has a measurement gap configured for it. For example, when the measurement gap is configured, the UE may report to the network that the UE can use all spatial resources (and / or all receive beams) that the UE can use for PRS reception (without ensuring a beam for data reception).

[0399] According to various embodiments, in addition to and / or separately from the information that the UE is capable of processing PRS within a specific time, the UE may provide to the BS / location server / LMF information about the number of beams that the UE is capable of simultaneously receiving and / or information about the number of cells / BS / TRPs from which the UE is capable of simultaneously receiving PRS (and / or information about at least one option of the definition / interpretation / use of N3 above) as the UE's DL PRS processing capability.

[0400] In alternative 1 and / or alternative 2 according to various embodiments, the information reported by the UE may be provided as a tuple, and / or each parameter may be reported separately. Additionally / alternatively, a group / set of specific parameters may be reported. However, this is only an example, and the information reported by the UE according to various embodiments may not be limited to a specific manner. The same applies to other examples according to various embodiments and the examples described in this section.

[0401] Proposal #2 (simultaneous processing of LTE PRS + NR PRS)

[0402] According to various embodiments, the UE may report the capability of simultaneously processing different RATs to the BS / location server / LMF. For example, in order for the UE to inform the BS / location server / LMF of the capability of simultaneously processing LTE PRS and NR PRS, the UE capability report may consider at least one of the following options.

[0403] Report (N, N2, N3, α, T), (N, N3, α, LTE_PRS_BW, NR_PRS_BW) or (N, N3, α, LTE_PRS_BW + NR_PRS_BW). In this case, information about α may be reported additionally and / or separately. For example, α may be reported separately, and / or (N, N2, N3, α, T), (N, N3, α, LTE_PRS_BW, NR_PRS_BW) and / or (N, N3, α, LTE_PRS_BW + NR_PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than α may also be reported separately. For example, LTE_PRS_BW and NR_PRS_BW may be reported separately, and / or their sum may be reported.

[0404] Report (N, N3, α, T), (N, N3, α, LTE_PRS_BW, NR_PRS_BW) or (N, N3, α, LTE_PRS_BW + NR_PRS_BW). In this case, information about α may be reported additionally and / or separately. For example, α may be reported separately, and / or (N, N3, α, T), (N, N3, α, LTE_PRS_BW, NR_PRS_BW) and / or (N, N3, α, LTE_PRS_BW + NR_PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than α may also be reported separately. For example, LTE_PRS_BW and NR_PRS_BW may be reported separately, and / or their sum may be reported.

[0405] In the description of various embodiments, LTE_PRS_BW and NR_PRS_BW may be defined as follows. Unless otherwise specified, the definitions of LTE_PRS_BW and NR_PRS_BW described later may generally be applied in the description of various embodiments.

[0406] LTE_PRS_BW: the maximum bandwidth of LTE PRS supported by the UE (and / or the (maximum) bandwidth of LTE PRS).

[0407] NR_PRS_BW: The bandwidth of a specific NR PRS supported by the UE and / or the maximum bandwidth of the NR PRS supported by the UE.

[0408] According to various embodiments, the UE may report to the network that the time used for simultaneous processing of NRPRS and LTE PRS within a time unit / time T (eg, T ms) is N×α (ms). According to various embodiments, α may be a scaling factor of N.

[0409] For example, when only NR PRS is processed, α=1.

[0410] For example, when processing LTE PRS and NR PRS simultaneously, the amount of buffering and / or calculation may increase compared to when only processing NR PRS, so α<1 may be considered.

[0411] For example, α≥0.

[0412] For example, when only NR PRS is processed, a total of N2 NR PRS resources may be processed. However, when performing simultaneous processing of LTE PRS and NR PRS, the UE may report to the network the number of NR PRS resources that the UE can process within time T as and / or

[0413] Additionally / alternatively, according to various embodiments, the following may be considered as another option.

[0414] Report (N, N2, N3, α, β, T). In this case, information about α / β (α and / or β) may be reported additionally and / or separately. For example, α / β may be reported separately, and / or (N, N2, N3, α, β, T) may be reported. Additionally / alternatively, at least one parameter other than α / β may also be reported separately.

[0415] In various embodiments, α / β may be defined as follows: Unless otherwise specified, the definitions of α and β described later may generally be applied in the description of various embodiments.

[0416] α: scaling factor of N

[0417] β: Scaling factor of N2

[0418] For example, in this case, the UE may report to the network that the number of NR PRS resources that the UE can process within time T is and / or

[0419] Proposal #3 (NR PRS processing for multiple frequency layers / bands (CA / DC))

[0420] According to various embodiments, in order to allow the UE to inform the BS / location server / LMF of the simultaneous DL PRS processing capabilities of K different frequency layers and / or K different frequency bands, the UE capability report may consider at least one of the following options. For example, a carrier aggregation (CA) case and / or a dual connectivity (DC) case may be considered, but the present disclosure is not limited thereto.

[0421] Option #1

[0422] (N, N3, α, K, T) or (N, N3, α, K, T, NR_PRS_BW) may be reported. In this case, information about α may be reported additionally and / or separately. For example, α may be reported separately, and / or (N, N3, α, K, T) and / or (N, N3, α, K, T, NR_PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than α may also be reported separately.

[0423] Option #2

[0424] (N, N2, N3, α, K, T) or (N, N2, N3, α, K, T, NR_PRS_BW) may be reported. In this case, information about α may be reported additionally and / or separately. For example, α may be reported separately, and / or (N, N2, N3, α, K, T) and / or (N, N2, N3, α, K, T, NR_PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than α may also be reported separately.

[0425] Option #3

[0426] Report (N, N2, N3, α, β, K, T) or (N, N2, N3, α, β, K, T, NR_PRS_BW). In this case, information about α / β (α and / or β) may be reported additionally and / or separately. For example, α / β may be reported separately, and / or (N, N2, N3, α, β, K, T) and / or (N, N2, N3, α, β, K, T, NR_PRS_BW) may be reported. Additionally / alternatively, at least one parameter other than α / β may also be reported separately.

[0427] In options #1 / #2 / #3 according to various embodiments, it can be understood that when PRS is sent in a single frequency layer and / or a single frequency band, the UE reports to the network that the PRS processing capability is (N, N3, T) (i.e., α=1) and the DL PRS capability sent in K frequency layers and / or K frequency bands within time T (e.g., T ms) is time N×α (e.g., N×αms).

[0428] In options #1 / #2 / #3 according to various embodiments, it can be understood that the UE informs the network that the number of receive beams that the UE can use simultaneously in a specific symbol is N3.

[0429] In option #2 according to various embodiments, it can be understood that the UE reports to the network that the total number of NR PRS resources that the UE can process within time T is and / or

[0430] In option #3 according to various embodiments, it can be understood that the UE reports to the network that the total number of NR PRS resources that the UE can process within time T is and / or

[0431] Since the DL PRS processing capability of the UE may vary for each frequency band (and / or each frequency layer), it may be more accurate to report the capability of simultaneously transmitting PRS in multiple frequency bands (and / or multiple layers) based on the frequency band combination (and / or frequency layer combination). However, reporting the capability for multiple frequency band combinations (and / or multiple frequency layer combinations) may result in excessive signaling overhead. According to various embodiments, this problem may be solved.

[0432] Proposal #4 (Buffering Capacity + Processing Capacity + RX Beams)

[0433] According to various embodiments, the UE may report the PRS buffering capability and the PRS processing capability separately.

[0434] Additionally and / or separately, according to various embodiments, the UE may report the maximum number of beams available at a particular time to facilitate the UE to receive PRS in a particular symbol.

[0435] For example, the UE may report together the number of PRS resources, PRS resource sets and / or cells / BSs / TRPs that the UE can simultaneously receive.

[0436] For example, the UE may report the buffering capacity, processing capacity, and / or the number of different source RSs of QCL Type D that the UE can use simultaneously for PRS resources at a specific time.

[0437] Hereinafter, the necessity of various embodiments will be described.

[0438] The network (eg, BS / location server / LMF) may configure / instruct the UE of a predetermined number of PRS resources within a specific time period based on the information reported by the UE according to at least one of the various embodiments described above.

[0439] For example, the location server / LMF may determine the number of PRS resources simultaneously transmitted to the UE in a specific OFDM symbol. In addition, the location server / LMF may configure a specific PRS resource that the UE can receive on the same receive (RX) beam among the M PRS resources transmitted simultaneously to have the same QCL type D configuration. By doing so, the UE may be configured not to receive more than N3 PRS resources with different QCL type D configurations in a specific symbol.

[0440] The network may configure appropriate PRS resources sent to the UE based on the report of at least one of the various embodiments described above and / or perform data scheduling. For example, the network may appropriately divide the spatial resources (RX beam / panel) that the UE can use for both data reception and PRS reception and schedule data taking into account the division.

[0441] Proposal #5 (Simultaneous processing of LTE PRS and NR PRS)

[0442] Method #1

[0443] According to various embodiments, multiple tuples of (N, T) may be reported for simultaneous processing of different RATs (e.g., simultaneous processing of LTE PRS and NR PRS).

[0444] For example, the UE may report to the BS / location server / LMF (N 1 ,T 1 ) and / or (N 1 ,T 1 ,BW NR_PRS ) as DLPRS processing capability of NR PRS only.

[0445] For example, the UE may (additionally and / or separately) report to the BS / location server / LMF (N 2 ,T 2 ) and / or (N 2 ,T 2 ,BW NR_PRS +BW LTE_PRS ) as the simultaneous processing capability of LTE PRS and NR PRS.

[0446] For example, N 2 ≤N 1 .

[0447] In various embodiments, BW NR_PRS and BW LTE_PRS It can be defined as follows. Unless otherwise specified, BW described later NR_PRS and BW LTE_PRS The definitions of may generally be applied in the description of the various embodiments.

[0448] BW NR_PRS : (maximum) bandwidth of NR PRS

[0449] BW LTE_PRS : (maximum) bandwidth of LTE PRS

[0450] Method #2

[0451] According to various embodiments, (N, T, α) may be reported for simultaneous processing of different RATs (e.g., simultaneous processing of LTE PRS and NR PRS).

[0452] For example, the UE may report (N, T) and / or (N, T, 1) as DL PRS processing capabilities of NR PRS only to the BS / location server / LMF.

[0453] For example, the UE may report (N, T, α) to the BS / location server / LMF as the simultaneous processing capability of LTE PRS and NR PRS, where α≤ 1. This may mean that the UE is able to process a duration α×N (e.g., α×N ms) within a specific time period / duration / window of T (e.g., T ms).

[0454] For example, α≥0.

[0455] In methods #1 and / or #2 according to various embodiments, in addition to and / or separately from the above-mentioned reporting content (information reported according to the above-mentioned various embodiments), the UE may report information about the SCS and / or parameter set of the LTE PRS and / or NR PRS.

[0456] According to various embodiments, the UE may report that the UE is able to process the PRS N ms within a specific duration of T (eg, a specific time window (ms)) as the DLNR PRS processing capability.

[0457] The UE may perform a cross-correlation operation on a group / set of PRS resources and / or perform a cross-correlation operation for each PRS resource to obtain / calculate the timing measurement of each PRS resource. Therefore, according to various embodiments, the UE may report not only the time when DL PRS processing can be performed, but also information about the number of timing measurements that the UE can obtain / calculate through the cross-correlation operation within a specific time, so that the network can identify the number of timing measurements. For example, assuming that the number of timing measurements that can be obtained for a specific bandwidth and / or a maximum PRS bandwidth during time T is Q, the UE may report (N, T, Q) to the BS / location server / LMF.

[0458] Priority

[0459] For positioning in a wireless communication system (e.g., an NR system) to which various embodiments are applicable, the UE may receive a DL PRS from one or more cells / BSs / TRPs. For example, one or more PRS resource sets may be configured for each cell / BS / TRP, and each PRS resource set may include one or more PRS resources.

[0460] For example, since the location server / LMF sends the PRS configuration information in a cell-specific manner in the positioning SIB, it may be difficult to configure the PRS considering all UE capabilities of each UE. In other words, considering that the PRS configuration information is determined / configured by the location server / LMF, the location server / LMF may not be easy to know all UE capabilities of each UE.

[0461] Therefore, the UE may be configured with a PRS that exceeds its UE capabilities. In this case, it may be necessary to determine / define a priority rule for selecting / using / processing the PRS for the UE. For positioning in a wireless communication system (e.g., an NR system) to which various embodiments apply, the following cases may need to be considered: a case where a reference configuration, (reference) resources, and / or (reference) resource sets are introduced; and a case where NR and LTE are supported simultaneously.

[0462] Various embodiments may be related to the priority between the configured PRSs. For example, when the configured PRS exceeds the capabilities of the UE, it may be necessary to determine / define the priority rules for the UE to select and process the PRS. According to various embodiments, the reference configuration configured to obtain / determine the reference timing may have the highest priority, and the priority may be defined / determined / configured in descending order of the cell / BS / TRP ID, descending order of the PRS resource ID, and / or descending order of the PRS resource set ID. However, various embodiments are not limited thereto, and other embodiments may be provided.

[0463] According to various embodiments, the UE may report the DL PRS processing capability of the UE to the BS / location server / LMF. Specifically, if the UE is configured with a measurement gap, the UE may report how many DL PRSs the UE can process. For example, the UE may report the capability according to at least one of the various embodiments described above.

[0464] According to various embodiments, when the UE is configured / instructed to measure and report PRSs that exceed its processing capabilities, it may determine which PRS to measure and / or report among the DL PRSs from the configured serving cell / BS / TRP and / or neighboring cell / BS / TRP. For example, it may be determined by the UE. Additionally / alternatively, according to various embodiments, the BS / location server / LMF may determine the priority and configure / indicate the priority to the UE.

[0465] Due to the processing of received data and / or RS, it may be difficult for the UE to process all PRSs sent from many cells / BSs / TRPs. Therefore, in this case, if the UE operation is not defined for it, the UE may make mistakes in the operation, and as a result, the UE positioning accuracy may be significantly reduced. Therefore, a method for determining priority is needed.

[0466] According to various embodiments, at least one of the following may be considered as a priority rule for determining which PRS is processed beyond the DL PRS processing capability of the UE. In addition, the operation of considering the priority rule may be configured / indicated to the UE. In the description of various embodiments, giving a high priority to something may mean including the thing (with a high priority) in the target to be measured and / or processed by the UE. For example, it may be assumed that PRS resources #0, #1, #2, #3, #4, and #5 are configured and information configuring PRS resource #2 as a reference is received. If the DL PRS processing capability of the UE related to the PRS resource is 1, the UE may preferentially include the PRS resource #2 with the highest priority in the processing / measurement target. For example, if the DL PRS processing capability of the UE related to the PRS resource is 2, the UE may preferentially include the PRS resource #2 with the highest priority in the processing / measurement target. Then, the UE may consider the remaining PRS resources: PRS resources #0, #1, #3, #4, #5 are sorted in descending order of priority to determine / select other PRS resources to be processed / measured. Although the above examples are described based on PRS resources, the present disclosure may be similarly applied to a PRS resource set and / or a cell / BS / TRP.

[0467] Unless otherwise specified, giving high priority to a cell / BS / TRP, a PRS resource and / or a PRS resource set may mean giving the corresponding cell / BS / TRP, a PRS resource and / or a PRS resource set a higher priority than giving other cells / BS / TRP, PRS resources and / or PRS resource sets.

[0468] Method 1

[0469] According to various embodiments, the cell / BS / TRP for which PRS measurement is to be performed may be preferentially selected / determined based on a good channel environment for timing measurement. For example, among multiple cells / BS / TRPs, a cell / BS / TRP with the best channel environment may be preferentially selected / determined. A good channel environment may be identified / determined based on measurements related to the channel environment. For example, a high line of sight (LOS) probability may correspond to a good channel environment. To this end, information pre-identified / obtained based on radio resource management (RRM) measurements and / or information pre-identified / obtained based on PRS reception may be used.

[0470] Method 2

[0471] According to various embodiments, location information about the cell / BS / TRP provided from the location server / LMF may be used, and measurements and / or measurement reports of PRS sent in a closer cell / BS / TRP may be given higher priority than those of a geographically distant (neighboring) cell / BS / TRP.

[0472] Method 3

[0473] According to various embodiments, the priority may be determined in ascending and / or descending order of cell / BS / TRP index / ID.

[0474] Additionally / alternatively, according to various embodiments, the priority may be determined in ascending and / or descending order of the PRS resource set index / ID. For example, for the PRS transmitted in a specific cell / BS / TRP, it may be determined in ascending and / or descending order of the PRS resource set index / ID to determine which PRS resource set is given a high measurement / processing priority.

[0475] Additionally / alternatively, according to various embodiments, for a specific PRS resource set, priority may be determined in ascending and / or descending order of PRS resource index / ID.

[0476] Additionally / alternatively, according to various embodiments, the configured / indicated reference cell / BS / TRP, reference PRS resource set and / or reference PRS resource may be given the highest priority. According to various embodiments, the measurement (reference cell / BS / TRP, reference PRS resource set and / or reference PRS resource) and / or the reporting of the measurement configured / indicated as a reference may be given the highest priority.

[0477] For example, the network may configure / indicate to the UE reference configuration information related to a DL PRS resource that may be used as a reference for measuring DL RSTD, DL-PRS-RSRP, and / or UE RX-TX time difference. For example, the information provided by the reference configuration information may include a cell / BS / TRP ID (e.g., a reference cell / BS / TRP ID), a DL PRS resource set ID (e.g., a reference PRS resource set ID), a list of PRS resource IDs and / or DL ​​PRS resource IDs (reference PRS resource IDs). According to various embodiments, the reference cell / BS / TRP, the reference PRS resource set, and / or the reference PRS resource corresponding to the reference cell / BS / TRP ID, the reference PRS resource set ID, and / or the reference PRS resource ID included in the information provided by the reference configuration information, respectively, may be given the highest priority. For example, the UE may use the DL PRS resource set ID and / or the DL PRS resource (and / or the cell / BS / TRP ID) provided by the reference configuration information as a reference. Additionally / alternatively, the UE may use a DL PRS resource set ID and / or DL ​​PRS resource (and / or cell / BS / TRP ID) different from that provided by the reference configuration information as a reference (for DL ​​PRS resources included in one DL PRS resource set). However, for example, even when the UE determines the reference using something different from that provided by the reference configuration information, the thing configured / indicated by the reference configuration information (configured / indicated by the reference configuration information as the reference cell / BS / TRP ID, the reference PRS resource set ID and / or the reference PRS resource ID) may be given the highest priority.

[0478] According to various embodiments, DL PRS resources may be sorted (within the positioning frequency layer) in descending order of priority of measurements to be performed by the UE, and the highest measurement priority may be given to the reference configured / indicated by the reference configuration information.

[0479] According to various embodiments, it may be assumed that the cells / BS / TRP IDs (of the frequency layer) are sorted according to priority. For example, it may be assumed that the cells / BS / TRP IDs are sorted in descending order of priority.

[0480] According to various embodiments, it may be assumed that the PRS resource sets of each cell / BS / TRP ID (of a frequency layer) are sorted according to priority. For example, it may be assumed that the PRS resource sets are sorted in descending order of priority.

[0481] For example, if some are sorted in ascending order of priority and others in descending order of priority, the UE implementation complexity may increase. According to various embodiments, the cell / BS / TRP IDs, PRS resource sets, and PRS resources may all be sorted in ascending / descending order of priority. Therefore, the UE implementation complexity may be reduced.

[0482] Unless otherwise specified, ascending / descending order in the description of various embodiments may mean ascending / descending order of relevant index / related ID.

[0483] Method 4

[0484] According to various embodiments, high priority may be given to measurement of specific DL PRS resources and / or DL ​​PRS resource sets transmitted from a specific physical cell / BS / TRP configured for the UE as QCL Type C and / or QCL Type D. For example, the corresponding PRS may be included in the measurement / processing target.

[0485] Method 5

[0486] According to various embodiments, the UE may give high priority to specific DL PRS resources and / or DL ​​PRS resource sets sent from a specific cell / BS / TRP configured / indicated as a PL reference for a specific SRS resource set. The UE may then include the specific DL PRS resources and / or DL ​​PRS resource sets in the PRS resources and / or PRS resource sets to be measured / processed by the UE.

[0487] Method 6

[0488] According to various embodiments, for a multi-cell RTT scheme, DL PRS resources and / or DL ​​PRS resource sets linked to specific SRS resources and / or SRS resource sets (for example, the SRS may be a positioning SRS configured for UE positioning) may be included in the PRS resources and / or PRS resource sets to be measured / processed by the UE, and may be given high priority.

[0489] Method 7

[0490] According to various embodiments, DL PRS resources linked to SSB and / or CSI-RS as QCL type D and / or QCL type C (to include DL PRS resources in measurement / processing targets) may be given higher priority than other DL PRS resources.

[0491] Method 8

[0492] According to various embodiments, the UE may give higher priority to PRS resources and / or PRS resource sets having relatively short periodicity than to PRS resources and / or PRS resource sets having relatively long periodicity.

[0493] According to various embodiments, the above-mentioned methods 1 to 8 may be considered individually as a prioritization method, and / or at least some of the methods 1 to 8 may be combined to configure another prioritization method.

[0494] According to various embodiments, the prioritization may be performed by the UE. According to various embodiments, when the UE is configured / indicated with a DL PRS that exceeds the UE's DL PRS processing capability, the UE may determine which DL PRS resource and / or DL ​​PRS resource set the UE needs to measure and / or process. The above UE operation may be interpreted as meaning that the UE determines the priority of the PRS to be processed / measured.

[0495] According to various embodiments, when a UE is configured / indicated a DL PRS that exceeds the UE's DL PRS processing capability, the UE may perform prioritization. According to various embodiments, the prioritization may depend on the UE implementation.

[0496] Additionally / alternatively, according to various embodiments, the priorities may be preconfigured / predefined.

[0497] According to various embodiments, when a UE is configured with a PRS that exceeds its processing capability, the UE may report this to the BS / location server / LMF and / or request the BS / location server / LMF to reconfigure the PRS considering the processing capability of the UE.

[0498] Additionally / alternatively, according to various embodiments, separately from and / or in addition to the PRS configured by the BS / location server / LMF, the UE may request the BS / location server / LMF to further configure / indicate the PRS in consideration of the processing capability of the UE.

[0499] Additionally / alternatively, according to various embodiments, the UE may request a DL PRS to be sent in a specific (physical) cell / BS / TRP.

[0500] Additionally / alternatively, according to various embodiments, the UE may request PRS resources in a specific beam direction transmitted in a specific (physical) cell / BS / TRP.

[0501] Additionally / alternatively, according to various embodiments, the UE may request to reduce the periodicity of the pre-configured DL PRS resources and / or DL ​​PRS resource sets (for higher accuracy UE positioning). According to various embodiments, the UE may request to allocate a frequency bandwidth (for PRS) wider than the pre-configured frequency bandwidth.

[0502] Additionally / alternatively, according to various embodiments, the UE may request to reduce the time and / or frequency resources of the pre-configured PRS resources (if the accuracy of UE positioning does not need to be higher than a certain level). For example, the UE may request to configure a longer periodicity and / or reduce the bandwidth of the PRS resources.

[0503] Additionally / alternatively, according to various embodiments, the UE may request the BS / location server / LMF to increase or decrease the transmission power of a specific PRS resource and / or a PRS resource set sent in a specific cell / BS / TRP. For example, when the UE does not continuously obtain measurements of a specific PRS resource and / or a PRS resource set sent from a specific cell / BS / TRP (e.g., when the measurement accuracy is below a certain level), the UE may send a change request to the BS / location server / LMF to improve the measurement accuracy.

[0504] Additionally / alternatively, according to various embodiments, the UE may request to change the time / frequency / transmission power resource configuration of a pre-configured specific positioning SRS resource and / or positioning SRS resource set in consideration of the transmission power resource and / or positioning accuracy of the UE.

[0505] Fig.14 is a diagram schematically illustrating a method of operating a UE and a network node according to various embodiments.

[0506] Fig.15 is a flow chart illustrating a method of operating a UE according to various embodiments.

[0507] Fig.16 is a flow chart illustrating a method of operating a network node according to various embodiments. For example, the network node may be a TP, a BS, a cell, a location server, a LMF and / or any device that performs the same work.

[0508] Reference Figures 14 to 16 , in operations 1401 , 1501 , and 1601 according to various embodiments, the network node may send first configuration information related to the PRS, and the UE may receive the first configuration information.

[0509] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0510] In operations 1403 , 1503 , and 1603 according to various embodiments, the network node may transmit second configuration information indicating a reference, and the UE may receive the second configuration information.

[0511] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0512] In operations 1405 and 1505 according to various embodiments, the UE may perform measurement based on (i) the first configuration information and (ii) the priority of measurement.

[0513] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority. For example, at least one of (i) at least one reference PRS resource set, (ii) at least one reference PRS resource, or (iii) at least one reference TP may be identified as the highest priority with respect to priority.

[0514] In operations 1407 , 1507 , and 1607 according to various embodiments, the UE may transmit information related to measurement (eg, information including a measurement result), and the network node may receive the information related to measurement.

[0515] According to various embodiments, operations 1401, 1403, 1405, 1407, 1501, 1503, 1505, 1507, 1601, 1603, and 1607 are not all necessary, and one or more operations may be discarded. For example, operations 1407, 1507, and 1607 may be discarded.

[0516] The specific operations of the UE and / or the network node according to the above various embodiments may be described and performed based on Sections 1 to 3 described above.

[0517] Since the examples of the above-mentioned proposed methods may also be included in one of the implementation methods of various embodiments, it is obvious that these examples are regarded as a proposed method. Although the above-mentioned methods can be implemented independently, the proposed method may be implemented in the form of a combination (aggregation) of some of the proposed methods. A rule may be defined so that the BS informs the UE of information on whether to apply the proposed method (or information on the rule of the proposed method) through a predefined signal (e.g., a physical layer signal or a high layer signal).

[0518] 4. Exemplary Configuration of Devices for Implementing Various Embodiments

[0519] 4.1. Exemplary Configuration of Apparatus to Which Various Embodiments Are Applied

[0520] Fig.17 It is a diagram showing a device for implementing various embodiments.

[0521] Fig.17The apparatus shown may be a UE and / or BS (e.g., eNB or gNB or TP) and / or a location server (or LMF) suitable for performing the above-mentioned mechanism or any apparatus performing the same operation.

[0522] Reference Fig.17 , the device may include a digital signal processor (DSP) / microprocessor 210 and a radio frequency (RF) module (transceiver) 235. The DSP / microprocessor 210 is electrically coupled to the transceiver 235 and controls the transceiver 235. The device may also include a power management module 205, a battery 255, a display 215, a keypad 220, a SIM card 225, a memory device 230, an antenna 240, a speaker 245, and an input device 250, according to the designer's choice.

[0523] Specifically, Fig.17 The UE may be shown to include a receiver 235 configured to receive a request message from the network and a transmitter 235 configured to send timing transmission / reception timing information to the network. These receivers and transmitters may form a transceiver 235. The UE may also include a processor 210 coupled to the transceiver 235.

[0524] also, Fig.17 A network device may be shown including a transmitter 235 configured to send a request message to a UE and a receiver 235 configured to receive timing transmission / reception timing information from the UE. These receivers and transmitters may form a transceiver 235. The network may also include a processor 210 coupled to the transceiver 235. The processor 210 may calculate a delay based on the transmission / reception timing information.

[0525] The processor of the UE (or a communication device included in the UE) and / or the BS (or a communication device included in the BS) and / or the location server (or a communication device included in the location server) may operate by controlling the memory as follows.

[0526] According to various embodiments, the UE or BS or location server may include at least one transceiver, at least one memory and at least one processor coupled to the at least one transceiver and the at least one memory. The at least one memory may store instructions for causing the at least one processor to perform the following operations.

[0527] The communication device included in the UE or the BS or the location server may be configured to include at least one processor and at least one memory. The communication device may be configured to include at least one transceiver, or be coupled to at least one transceiver without including at least one transceiver.

[0528] A TP and / or a BS and / or a cell and / or a location server and / or a LMF and / or any device performing the same may be referred to as a network node.

[0529] According to various embodiments, at least one processor included in the UE (or at least one processor of the communication device included in the UE) may receive first configuration information related to the PRS.

[0530] According to various embodiments, at least one processor included in the UE may receive second configuration information indicating a reference.

[0531] According to various embodiments, at least one processor included in the UE may perform measurement based on (i) the first configuration information and (ii) a priority of measurement.

[0532] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0533] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0534] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0535] According to various embodiments, at least one PRS resource identifier (ID) may be assigned to at least one PRS resource, respectively.

[0536] According to various embodiments, the at least one PRS resource may be sorted in descending order of priority.

[0537] According to various embodiments, at least one PRS resource set ID may be respectively assigned to at least one PRS resource set.

[0538] According to various embodiments, at least one PRS resource set may be sorted according to priority.

[0539] According to various embodiments, at least one TP ID may be assigned to at least one TP, respectively.

[0540] According to various embodiments, at least one TP may be sorted according to priority.

[0541] According to various embodiments, at least one of the following may be satisfied: (i) at least one reference PRS resource set is included in at least one PRS resource set; (ii) at least one reference PRS resource is included in at least one PRS resource; or (iii) at least one reference TP is included in at least one TP. According to various embodiments, at least one reference PRS resource set may have the highest priority among at least one PRS resource set, at least one reference PRS resource may have the highest priority among at least one PRS resource, and / or at least one reference TP may have the highest priority among at least one TP.

[0542] According to various embodiments, when at least one of (i) the number of at least one PRS resource sets, (ii) the number of at least one PRS resource, or (iii) the number of at least one TP exceeds the PRS processing capability of the UE, measurement may be performed based on priority.

[0543] According to various embodiments, a plurality of PRSs may be received based on the first configuration information.

[0544] According to various embodiments, an object of measurement may be determined from among a plurality of PRSs based on priority.

[0545] According to various embodiments, identifying the reference indicated by the second configuration information as the highest priority with respect to priority may include identifying at least one of (i) at least one reference PRS resource set, (ii) at least one reference PRS resource, or (iii) at least one reference TP as the highest priority with respect to priority.

[0546] According to various embodiments, at least one processor included in the network node (or at least one processor of the communication device included in the network node) may send first configuration information related to the PRS.

[0547] According to various embodiments, at least one processor included in the network node may send second configuration information indicating a reference.

[0548] According to various embodiments, at least one processor included in the network node may receive information about positioning-related measurements in response to the first configuration information.

[0549] According to various embodiments, the measurements may be based on a priority of the measurements.

[0550] According to various embodiments, the first configuration information may include at least one of: (i) information related to at least one PRS resource set, (ii) information related to at least one PRS resource, or (iii) information related to at least one TP.

[0551] According to various embodiments, the second configuration information may include at least one of: (i) information related to at least one reference PRS resource set, (ii) information related to at least one reference PRS resource, or (iii) information related to at least one reference TP.

[0552] According to various embodiments, the reference indicated by the second configuration information may be identified as the highest priority with respect to priority.

[0553] The specific operations of the UE and / or the network node according to the above various embodiments may be described and performed based on Sections 1 to 3 described above.

[0554] Unless mutually contradictory, various embodiments may be implemented in combination. For example, unless mutually contradictory, the UE and / or network node (the processor included therein) according to various embodiments may perform operations according to a combination of the embodiments described in Sections 1 to 3 above.

[0555] 4.2. Examples of communication systems to which various embodiments of the present disclosure are applied

[0556] In this specification, various embodiments of the present disclosure are described mainly with respect to data transmission and reception between a BS and a UE in a wireless communication system. However, various embodiments of the present disclosure are not limited thereto. For example, various embodiments of the present disclosure may also involve the following technical configurations.

[0557] The various descriptions, functions, processes, proposals, methods and / or operational flowcharts of various embodiments of the present disclosure described in this document may be applied to (but not limited to) various fields requiring wireless communication / connection (e.g., 5G) between devices.

[0558] Hereinafter, a description will be given in more detail with reference to the accompanying drawings. In the following drawings / descriptions, unless otherwise described, the same reference numerals may represent the same or corresponding hardware blocks, software blocks or functional blocks.

[0559] Fig.18 An exemplary communication system to which various embodiments of the present disclosure are applied is shown.

[0560] Reference Fig.18, the communication system 1 applied to various embodiments of the present disclosure includes a wireless device, a base station (BS), and a network. Herein, the wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G new RAT (NR) or long term evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include (but is not limited to) a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices, and may be implemented in the form of head mounted devices / displays (HMDs), head up displays (HUDs) installed in vehicles, televisions, smart phones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, etc. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0561] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. The AI ​​technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., side link communication) with each other without passing through the BS / network. For example, vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). An IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0562] Wireless communication / connection 150a, 150b or 150c may be established between wireless devices 100a to 100f / BS200 or BS200 / BS200. Herein, wireless communication / connection may be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication) or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device may send / receive radio signals to / from each other through wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b may send / receive signals through various physical channels. To this end, at least a portion of various configuration information for configuring processes for sending / receiving radio signals, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and resource allocation processes may be performed based on various proposals of various embodiments of the present disclosure.

[0563] Examples of wireless devices to which various embodiments of the present disclosure are applied

[0564] Fig.19 An exemplary wireless device to which various embodiments of the present disclosure are applicable is shown.

[0565] Reference Fig.19 , the first wireless device 100 and the second wireless device 200 may transmit radio signals via various RATs (e.g., LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to Fig.18 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x}.

[0566] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and further include one or more transceivers 106 and / or one or more antenna units 108. The processor 102 may control the memory 104 and / or the transceiver 106, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 102 may process the information in the memory 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver 106. The processor 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102, and may store various information related to the operation of the processor 102. For example, the memory 104 may store software codes including commands for executing part or all of the processes controlled by the processor 102 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Herein, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals through one or more antenna units 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In various embodiments of the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0567] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and further include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver 206. The processor 202 may receive a radio signal including fourth information / signals through the transceiver 206, and then store information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including commands for executing part or all of the processes controlled by the processor 202 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Herein, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals through one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In various embodiments of the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0568] In the following, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by (but not limited to) one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and provide the generated signal to one or more transceivers 106 and 206. One or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from one or more transceivers 106 and 206 and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0569] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flow charts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flow charts disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204 to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods and / or operational flow charts disclosed in this document may be implemented in the form of codes, commands and / or command sets using firmware or software.

[0570] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, codes, instructions and / or commands. One or more memories 104 and 204 may be configured by read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, register, cache memory, computer-readable storage medium and / or a combination thereof. One or more memories 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 by various technologies such as wired or wireless connections.

[0571] One or more transceivers 106 and 206 may send user data, control information and / or radio signals / channels mentioned in the method and / or operation flow chart of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information and / or radio signals / channels mentioned in the description, function, process, proposal, method and / or operation flow chart disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and send and receive radio signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information or radio signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antenna units 108 and 208, and one or more transceivers 106 and 206 may be configured to send and receive user data, control information and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods and / or operation flow charts disclosed in this document through one or more antenna units 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals so as to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more of the transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0572] According to various embodiments of the present disclosure, one or more memories (e.g., 104 or 204) may store instructions or programs, which when executed cause one or more processors operatively connected to the one or more memories to perform operations according to various embodiments or implementations of the present disclosure.

[0573] According to various embodiments of the present disclosure, a computer-readable storage medium may store one or more instructions or computer programs, which when executed by one or more processors cause the one or more processors to perform operations according to various embodiments or implementations of the present disclosure.

[0574] According to various embodiments of the present disclosure, a processing device or apparatus may include one or more processors and one or more computer memories connected to the one or more processors. The one or more computer memories may store instructions or programs that, when executed, cause one or more processors operatively connected to the one or more memories to perform operations according to various embodiments or implementations of the present disclosure.

[0575] Usage examples of wireless devices to which various embodiments of the present disclosure are applied

[0576] Fig. 20 Other exemplary wireless devices to which various embodiments of the present disclosure are applied are shown. The wireless device may be configured to perform the following operations according to the usage scenario / service (see Fig.18 ) are implemented in various forms.

[0577] Reference Fig. 20 , the wireless devices 100 and 200 may correspond to Fig.19 The wireless devices 100 and 200 of the present invention may be configured by various elements, components, units / parts and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130 and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include Fig.19 One or more processors 102 and 202 and / or one or more memories 104 and 204. For example, the transceiver 114 may include Fig.19 The control unit 120 is electrically connected to the communication unit 110, the memory unit 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. The control unit 120 may send information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store information received from the outside (e.g., other communication devices) via the communication unit 110 in the memory unit 130 through a wireless / wired interface.

[0578] The additional components 140 may be configured differently depending on the type of wireless device. For example, the additional components 140 may include at least one of a power supply unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be configured in the form of, but not limited to, a robot ( Fig.18 100a), vehicles ( Fig.18 100b-1 and 100b-2), XR devices ( Fig.18 100c), handheld device ( Fig.18 100d), household appliances ( Fig.18 100e), IoT devices ( Fig.18 100f), digital broadcasting terminal, holographic device, public safety device, MTC device, medical device, fintech device (or financial device), security device, climate / environmental device, AI server / device ( Fig.18 400), BS( Fig.18 200), network nodes, etc. The wireless device can be used in a mobile or fixed location according to the usage example / service.

[0579] exist Fig. 20 In the wireless devices 100 and 200, various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may all be connected to each other through a wired interface, or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be wired, and the control unit 120 and the first unit (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. The various elements, components, units / parts and / or modules within the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be configured by a collection of one or more processors. As an example, the control unit 120 may be configured by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory unit 130 may be configured by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM)), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0580] Hereinafter, the implementation will be described in detail with reference to the accompanying drawings. Fig. 20 .

[0581] Examples of portable devices to which various embodiments of the present disclosure are applied

[0582] Fig.21 An exemplary portable device applied to various embodiments of the present disclosure is shown. The portable device may be any of a smart phone, a smart board, a wearable device (e.g., a smart watch or smart glasses), and a portable computer (e.g., a laptop computer). The portable device may also 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).

[0583] Reference Fig.21, the handheld device 100 may 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 may be configured as a part of the communication unit 110. Blocks 110 to 130 / 140a to 140c correspond to Fig. 20 Blocks 110 to 130 / 140.

[0584] The communication unit 110 may send / receive signals (e.g., data and control signals) to / from other wireless devices or BSs. The control unit 120 may perform various operations by controlling the constituent elements of the handheld device 100. The control unit 120 may include an application processor (AP). The memory unit 130 may store data / parameters / programs / codes / commands required to drive the handheld device 100. The memory unit 130 may store input / output data / information. The power supply unit 140a may supply power to the handheld device 100 and include a wired / wireless charging circuit, a battery, etc. The interface unit 140b may support the connection of the handheld device 100 with other external devices. The interface unit 140b may include various ports (e.g., an audio I / O port and a video I / O port) for connecting to an external device. The I / O unit 140c may input or output video information / signals, audio information / signals, data and / or information input by a user. The I / O unit 140c may include a camera, a microphone, a user input unit, a display unit, a speaker and / or a tactile module.

[0585] As an example, in the case of data communication, the I / O unit 140c may acquire information / signals (e.g., touch, text, voice, image, or video) input by the user, and the acquired information / signals may be stored in the memory unit 130. The communication unit 110 may convert the information / signals stored in the memory into radio signals and directly transmit the converted radio signals to other wireless devices or BSs. The communication unit 110 may receive radio signals from other wireless devices or BSs, and then restore the received radio signals to the original information / signals. The restored information / signals may be stored in the memory unit 130 and may be output as various types (e.g., text, voice, image, video, or tactile) through the I / O unit 140c.

[0586] Examples of vehicles or autonomous driving vehicles according to various embodiments of the present disclosure

[0587] Fig. 22 An exemplary vehicle or autonomous driving vehicle to which various embodiments of the present disclosure are applied is shown. The vehicle or autonomous driving vehicle may be implemented as a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0588] Reference Fig. 22, the vehicle or autonomous driving vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Fig. 20 Block 110 / 130 / 140.

[0589] The communication unit 110 may send and receive signals (e.g., data and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or autonomous vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a may enable the vehicle or autonomous vehicle 100 to travel on a road. The drive unit 140a may include an engine, a motor, a power system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous vehicle 100, and include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may obtain vehicle status, surrounding environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / backward sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a depth sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously traveling along a determined path, a technology for traveling by automatically setting a path if a destination is set, and the like.

[0590] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving path and a driving plan from the obtained data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving path according to the driving plan (e.g., speed / direction control). In the middle of autonomous driving, the communication unit 110 may aperiodically / periodically obtain the latest traffic information data from the external server and obtain surrounding traffic information data from neighboring vehicles. In the middle of autonomous driving, the sensor unit 140c may obtain vehicle status and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving path and driving plan based on the newly obtained data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving path, and / or driving plan to an external server. The external server may predict traffic information data based on information collected from the vehicle or autonomous driving vehicle using AI technology, etc., and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0591] In summary, various embodiments may be implemented through specific devices and / or UEs.

[0592] For example, the specific device may be any one of a BS, a network node, a sending UE, a receiving UE, a wireless device, a wireless communication device, a vehicle, a vehicle equipped with an autonomous driving function, an unmanned vehicle (UAV), an artificial intelligence (AI) module, a robot, an augmented reality (AR) device, a virtual reality (VR) device, and other devices.

[0593] For example, the UE may be any of a personal digital assistant (PDA), a cellular phone, a personal communications service (PCS) phone, a global system for mobile communications (GSM) phone, a wideband CDMA (WCDMA) phone, a mobile broadband system (MBS) phone, a smart phone, and a multi-mode multi-band (MM-MB) terminal.

[0594] A smart phone refers to a terminal that has the advantages of both a mobile communication terminal and a PDA, which is achieved by integrating data communication functions (e.g., scheduling, fax transmission and reception, and Internet connection) that are functions of a PDA into a mobile communication terminal. In addition, an MM-MB terminal refers to a terminal that has a multi-modem chip built in, so it can operate in all portable Internet systems and other mobile communication systems (e.g., CDMA2000, WCDMA, etc.).

[0595] Alternatively, the UE may be any one of a laptop PC, a handheld PC, a tablet PC, an ultrabook, a tablet computer, a digital broadcast terminal, a portable multimedia player (PMP), a navigator, and a wearable device (e.g., a smart watch, smart glasses, and a head-mounted display (HMD)). For example, a UAV may be an unmanned vehicle that flies under the control of a wireless control signal. For example, an HMD may be a display device worn on the head. For example, an HMD may be used to implement AR or VR.

[0596] The wireless communication technology implementing various embodiments may include LTE, NR and 6G, and narrowband Internet of Things (NB-IoT) for low power communication. For example, NB-IoT technology may be an example of low power wide area network (LPWAN) technology, and is implemented as a standard of LTE Category (CAT) NB1 and / or LTE Cat NB2. However, these specific applications should not be interpreted as limiting NB-IoT. Additionally or alternatively, the wireless communication technology implemented in the wireless device according to various embodiments may implement communication based on LTE-M. For example, LTE-M may be an example of LPWAN technology, referred to as various names such as enhanced machine type communication (eMTC). For example, LTE-M technology may be implemented as (but not limited to) at least one of 1) LTE CAT 0, 2) LTE Cat M1, 3) LTE Cat M2, 4) LTE non-bandwidth limited (non-BL), 5) LTE-MTC, 6) LTE machine type communication and / or 7) LTE M. Additionally or alternatively, considering low power communication, the wireless communication technology implemented in the wireless device according to various embodiments may include (but not limited to) at least one of ZigBee, Bluetooth or LPWAN. For example, ZigBee may create a personal area network (PAN) related to small / low-power digital communications conforming to various standards such as IEEE802.15.4, and may be referred to by various names.

[0597] Various embodiments may be implemented in various ways. For example, various embodiments may be implemented in hardware, firmware, software or a combination thereof.

[0598] In a hardware configuration, the method according to the exemplary embodiment may be implemented by 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, microcontrollers, microprocessors, and the like.

[0599] In a firmware or software configuration, the methods according to various embodiments may be implemented in the form of modules, procedures, functions, etc. that perform the above functions or operations. The software code may be stored in the memory 50 or 150 and executed by the processor 40 or 140. The memory is located inside or outside the processor and may send and receive data to and from the processor via various known means.

[0600] Those skilled in the art will appreciate that, without departing from the spirit and essential features of the various embodiments, the various embodiments may be implemented in other specific ways other than those set forth herein. Therefore, the above-described embodiments are interpreted in all respects as being illustrative, rather than restrictive. The scope of the present disclosure should be determined by the attached claims and their legal equivalents (rather than the above description), and all changes falling within the meaning and equivalent scope of the attached claims are intended to be included therein. It is obvious to those skilled in the art that the claims that are not explicitly referenced to each other in the attached claims may be presented as embodiments in combination, or included as new claims by subsequent modifications after the application is submitted.

[0601] Industrial Applicability

[0602] Various embodiments are applicable to various wireless access systems including 3GPP systems and / or 3GPP2 systems. In addition to these wireless access systems, various embodiments are applicable to all technical fields to which wireless access systems can be applied. In addition, the proposed method can also be applied to mmWave communications using ultra-high frequency bands.

Claims

1. A method performed by a user equipment UE, the method comprising the following steps: Sending UE capability information for positioning, the UE capability information including first capability information and second capability information; Receiving first configuration information related to a positioning reference signal PRS and second configuration information about a reference; as well as performing the measurement based on the first configuration information and a priority for the measurement, The first configuration information includes information related to at least one PRS resource set and information related to at least one PRS resource. The second configuration information includes at least one of information related to at least one reference PRS resource set and information related to at least one reference PRS resource, wherein the reference configured by the second configuration information has the highest priority for the measurement, The first capability information is configured per frequency band. The first capability information for each frequency band includes: i) an N value and a T value for reporting a duration N of a PRS symbol that can be processed during T ms, and ii) a maximum PRS bandwidth of the UE, and The second capability information is configured to indicate that the UE supports simultaneous processing of Long Term Evolution LTE PRS and New Radio Access Technology NR PRS.

2. The method according to claim 1, wherein: At least one PRS resource identifier ID is respectively assigned to the at least one PRS resource, and The at least one PRS resource is sorted in descending order of the priority.

3. The method according to claim 1, wherein: At least one PRS resource set ID is respectively assigned to the at least one PRS resource set, and The at least one PRS resource set is sorted according to the priority.

4. The method according to claim 1, wherein: The at least one reference PRS resource set is included in the at least one PRS resource set; and The at least one reference PRS resource is included in the at least one PRS resource.

5. The method according to claim 1, wherein: receiving a plurality of PRSs based on the first configuration information, and The object of measurement is determined from among the multiple PRSs based on the priority.

6. The method according to claim 1, wherein: At least one of the at least one reference PRS resource set and the at least one reference PRS resource has the highest priority for measurement.

7. A user equipment UE, the UE comprising: Transceiver; as well as at least one processor coupled to the transceiver, Wherein, the at least one processor is configured to: Sending UE capability information for positioning, the UE capability information including first capability information and second capability information; receiving first configuration information related to a positioning reference signal PRS and second configuration information about a reference; and performing the measurement based on the first configuration information and a priority for the measurement, The first configuration information includes information related to at least one PRS resource set and information related to at least one PRS resource. The second configuration information includes at least one of information related to at least one reference PRS resource set and information related to at least one reference PRS resource, wherein the reference configured by the second configuration information has the highest priority for the measurement, The first capability information is configured per frequency band. The first capability information for each frequency band includes: i) an N value and a T value for reporting a duration N of a PRS symbol that can be processed during T ms, and ii) a maximum PRS bandwidth of the UE, and The second capability information is configured to indicate that the UE supports simultaneous processing of Long Term Evolution LTE PRS and New Radio Access Technology NR PRS.

8. A method performed by a base station BS, the method comprising the following steps: Receiving UE capability information for positioning from a user equipment UE, the UE capability information comprising first capability information and second capability information; Sending first configuration information related to a positioning reference signal PRS and second configuration information about a reference; as well as receiving information about measurements related to positioning, wherein the measurement is based on a priority for the measurement, The first configuration information includes information related to at least one PRS resource set and information related to at least one PRS resource. The second configuration information includes at least one of information related to at least one reference PRS resource set and information related to at least one reference PRS resource, and wherein the reference configured by the second configuration information has the highest priority for the measurement, The first capability information is configured per frequency band. The first capability information for each frequency band includes: i) an N value and a T value for reporting a duration N of a PRS symbol that can be processed during T ms, and ii) a maximum PRS bandwidth of the UE, and The second capability information is configured to indicate that the UE supports simultaneous processing of Long Term Evolution LTE PRS and New Radio Access Technology NR PRS.

9. A base station BS, comprising: Transceiver; as well as at least one processor coupled to the transceiver, Wherein, the at least one processor is configured to: Receiving UE capability information for positioning from a user equipment UE, the UE capability information comprising first capability information and second capability information; Sending first configuration information related to a positioning reference signal PRS and second configuration information about a reference; and receiving information about measurements related to positioning, wherein the measurement is based on a priority for the measurement, The first configuration information includes information related to at least one PRS resource set and information related to at least one PRS resource. The second configuration information includes at least one of information related to at least one reference PRS resource set and information related to at least one reference PRS resource, and wherein the reference configured by the second configuration information has the highest priority for the measurement, The first capability information is configured per frequency band. The first capability information for each frequency band includes: i) an N value and a T value for reporting a duration N of a PRS symbol that can be processed during T ms, and ii) a maximum PRS bandwidth of the UE, and The second capability information is configured to indicate that the UE supports simultaneous processing of Long Term Evolution LTE PRS and New Radio Access Technology NR PRS.

10. A processor-readable medium, the processor-readable medium being configured to store at least one instruction, which, when executed by a processor of a user equipment (UE), enables the UE to perform the method according to claim 1.

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