WO2024100744A1 - Terminal, station de base et procédé de communication - Google Patents

Terminal, station de base et procédé de communication Download PDF

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Publication number
WO2024100744A1
WO2024100744A1 PCT/JP2022/041457 JP2022041457W WO2024100744A1 WO 2024100744 A1 WO2024100744 A1 WO 2024100744A1 JP 2022041457 W JP2022041457 W JP 2022041457W WO 2024100744 A1 WO2024100744 A1 WO 2024100744A1
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Prior art keywords
terminal
base station
pru
information
lmf
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PCT/JP2022/041457
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English (en)
Japanese (ja)
Inventor
真哉 岡村
大樹 武田
康介 島
浩樹 原田
春陽 越後
Original Assignee
株式会社Ｎｔｔドコモ
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Priority to PCT/JP2022/041457 priority Critical patent/WO2024100744A1/fr
Publication of WO2024100744A1 publication Critical patent/WO2024100744A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to positioning technology in wireless communication systems.
  • 3GPP registered trademark
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • 5G Fifth Generation Partnership Project
  • NR New Radio
  • 5G various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more while keeping wireless section latency to 1 ms or less.
  • NR Positioning which uses reference signals to perform positioning
  • CPM Carrier Phase Measurement
  • PRU Positioning Reference Units
  • the present invention has been made in consideration of the above points, and aims to provide technology that makes it possible to use an appropriate PRU when positioning a terminal.
  • a receiving unit that receives setting information indicating a predetermined positioning method
  • a terminal comprising: a control unit that expects to be informed of information related to the position reference device.
  • the disclosed technology provides a technology that enables the use of an appropriate PRU in terminal positioning.
  • FIG. 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • 1 is a diagram illustrating a wireless communication system according to an embodiment of the present invention.
  • FIG. 1 is a diagram showing a configuration in which multiple base stations exist.
  • FIG. 1 is a diagram for explaining carrier phase measurement (CPM).
  • FIG. 1 is a diagram for explaining carrier phase measurement (CPM).
  • FIG. 1 is a diagram for explaining positioning using a PRU.
  • FIG. 1 is a diagram for explaining positioning using a PRU.
  • FIG. 1 is a diagram for explaining positioning using a PRU.
  • FIG. 1 is a diagram for explaining embodiment 0.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 1 is a diagram for explaining the first embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station 10 and an LMF 30 according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to an embodiment of the present invention.
  • FIG. 1 is a diagram illustrating an example of a vehicle.
  • Fig. 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention.
  • the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20.
  • the core network is provided with an LMF 30, and is capable of communicating with the base station 10.
  • the LMF 30 may communicate with the base station 10 via an AMF.
  • the LMF 30 is an example of a network device.
  • the base station 10 is also an example of a network device.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example and there may be multiple of each.
  • One, more than one, or all of the multiple base stations 10 may be airborne devices (e.g., satellites, HAPS).
  • the source of the DL-PRS may be called a TRP (transmission reception point).
  • a TRP may be called a transmission point or a reception point.
  • a TRP may be a base station, a base station's extended antenna device, or some other device.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the TTI (Transmission Time Interval) in the time domain may be a slot, or the TTI may be a subframe. Note that a cell and a CC may be considered synonymous.
  • the base station 10 is capable of performing carrier aggregation, which bundles multiple cells (multiple CCs (component carriers)) together to communicate with the terminal 20.
  • carrier aggregation one PCell (primary cell) and one or more SCells (secondary cells) are used.
  • the base station 10 transmits a synchronization signal, system information, etc. to the terminal 20.
  • the synchronization signal is, for example, NR-PSS and NR-SSS.
  • the system information is, for example, transmitted by NR-PBCH or PDSCH, and is also called broadcast information.
  • the base station 10 transmits a control signal or data to the terminal 20 by DL (Downlink), and receives a control signal or data from the terminal 20 by UL (Uplink).
  • the signals transmitted by control channels such as PUCCH and PDCCH are called control signals
  • the signals transmitted by shared channels such as PUSCH and PDSCH are called data, but these names are merely examples.
  • UCI Uplink Control Information
  • PUCCH or PUSCH Uplink Control Information
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in DL and transmits control signals or data to the base station 10 in UL, thereby utilizing various communication services provided by the wireless communication system.
  • the terminal 20 may be called a UE, and the base station 10 may be called a gNB.
  • the terminal 20 also has a carrier phase positioning function.
  • the terminal 20 is capable of performing carrier aggregation, which bundles multiple cells (multiple CCs (component carriers)) together to communicate with the base station 10.
  • carrier aggregation one PCell (primary cell) and one or more SCells (secondary cells) are used.
  • a PUCCH-SCell having a PUCCH may also be used.
  • LMF (Location Management Function) 30 is a function (device) responsible for communication control related to the location information service defined in 5GC.
  • LMF 30 may be called a location management server, a location management device, or a network device.
  • LMF 30 can receive, for example, measurement results (phase, received power, time difference, angle, etc.) of a reference signal from terminal 20 or base station 10, and calculate the position of terminal 20.
  • LMF 30 can also provide setting information or control information related to positioning to terminal 20 and base station 10.
  • FIG. 2 shows an example of the configuration of a wireless communication system when DC (Dual connectivity) is implemented.
  • a base station 10A serving as an MN (Master Node) and a base station 10B serving as an SN (Secondary Node) are provided.
  • Base station 10A and base station 10B are each connected to a core network 40.
  • Terminal 20 can communicate with both base station 10A and base station 10B.
  • the cell group provided by base station 10A which is an MN
  • MCG Master Cell Group
  • SCG Secondary Cell Group
  • the MCG is composed of one PCell and one or more SCells
  • the SCG is composed of one PSCell (Primary SCell) and one or more SCells.
  • FIG. 3 shows an example in which the terminal 20 performs positioning by receiving reference signals from multiple base stations 10A to 10C. For example, the position of the terminal 20 can be found by determining the distance (or angle) between the terminal 20 and multiple base stations.
  • the distance between the terminal 20 and the base station can be calculated from the arrival time of the signal or the wave number of the carrier wave of the signal (wave number x wavelength).
  • the wave number of the carrier wave is used, as described below.
  • a reference signal used for positioning is called a PRS (Positioning Reference Signal).
  • PRS Positioning Reference Signal
  • the terminal 20 performs Carrier Phase Measurement (CPM).
  • CPM is a highly accurate positioning method using a carrier phase adopted in GNSS and the like.
  • FIG 4 shows an overview of CPM.
  • Figure 4 shows an example in which the base station 10 is a satellite.
  • CPM uses the number of carrier waves and the receiving phase difference of the carrier waves (the phase of the part less than one wave) to calculate the distance between the base station 10 and the positioning point, thereby determining the position of the positioning point.
  • the phase at t0' is calculated using the transmission time (t0) and the receiving time (t0').
  • the phase corresponding to ⁇ can be found by measuring a reference signal, but the wave number (N) cannot be determined from a single measurement. As shown in Figure 5, when using the L1 signal, there are approximately 500 candidates for N (wave number) within a 100 m width.
  • CPM the process of determining the wave number (N) is called Ambiguity Resolution (AR).
  • AR Ambiguity Resolution
  • GNSS GNSS
  • it is common to use multiple satellites to calculate an initial value ( use propagation time to narrow down position candidates to a certain extent) and then perform AR.
  • multiple TRPs are used.
  • each of the terminal 20 and the PRU 40 measures the phase of the signal from TRP#0 and also measures the phase of the signal from TRP#1.
  • FIG. 7 and 8 an example sequence for positioning using a PRU will be described.
  • the sequences in Figures 7 and 8 can be applied to any of the embodiments 0 to 4 described below.
  • the "measurement results" in Figures 7 and 8 are, for example, measurement results of the phase of signals from one or more TRPs.
  • positioning using a PRU is not limited to carrier phase positioning.
  • the terminal 20 transmits the measurement results to the LMF 30.
  • the PRU 40 transmits the measurement results to the LMF 30.
  • the LMF 30 performs positioning calculations for the terminal 20.
  • the terminal 20 performs a measurement.
  • the PRU 40 performs a measurement and transmits the measurement results to the LMF 30 in S22, and the LMF 30 transmits the measurement results to the terminal 20 in S23.
  • the terminal 20 performs positioning calculations using its own measurement results and the measurement results by the PRU 40. Note that in the example of FIG. 8, the PRU 40 may transmit the measurement results directly to the terminal 20, for example, wirelessly.
  • a PRU (referred to as a reference PRU) close to a terminal to be positioned (which may also be referred to as a target UE) as a PRU to be used together with the terminal.
  • the reference PRU may also be referred to as a reference PRU or a reference PRU.
  • the reference PRU may also be referred to as a "position reference device.”
  • embodiments 0 to 4 As embodiments for solving the above problems, embodiments 0 to 4 will be described below.
  • the outline of embodiments 0 to 4 is as follows.
  • Embodiment 0 (high-level proposal): It is assumed that when CP measurement is configured from the base station 20 (or the LMF 30), the terminal 20 is notified of "reference PRU information" or "information measured by the reference PRU.”
  • Embodiment 1 The terminal 20 assumes that the reference PRU is beam related to the terminal 20.
  • Embodiment 2 The terminal 20 assumes that the reference PRU is associated with the terminal 20 by a Cell (TRP)-ID (Cell (TRP)-ID related).
  • TRP Cell
  • TRP Cell
  • Embodiment 3 The terminal 20 assumes that the reference PRU is distance related to the terminal 20.
  • Embodiment 4 Terminal 20 assumes that the reference PRU is LoS/NLoS related to terminal 20.
  • the assumed subject is the terminal 20, but the assumed subject may be the base station 10, the LMF 30, or a network node device other than the base station 10 or the LMF 30.
  • embodiment 0 is a basic example, and its detailed examples correspond to embodiments 1 to 4. Any or all of embodiments 0 to 4 can be implemented in combination.
  • Embodiment 0 First, a description will be given of embodiment 0. In embodiment 0, it is assumed that the terminal 20 (or the base station 10, or the LMF 30) is notified of reference PRU-related information (information related to the position reference device) when the measurement is configured from the base station 20.
  • reference PRU-related information information related to the position reference device
  • the above “measurement” is a measurement for positioning, for example a CP measurement, but is not limited to a CP measurement and may be, for example, an RSTD measurement.
  • Reference PRU-related information is, for example, “reference PRU information” or “information measured with the reference PRU (measurement results).”
  • the terminal 20 receives setting information indicating a predetermined positioning method from the base station 10 (which may be the LMF 30).
  • the setting information is, for example, information indicating that CP measurement will be performed.
  • the setting information may include setting information for the reference signal (PRS) to be used.
  • PRS reference signal
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that reference PRU-related information (information related to the position reference device) will be notified to the terminal 20. Because it is "assumed,” it is possible to make a decision, for example, not to perform positioning using a specified positioning method until the reference PRU-related information is notified. Also, because it is “assumed,” it is possible to decide, for example, to use the reference PRU-related information for a specified positioning method.
  • the terminal 20 receives reference PRU-related information from the base station 10, for example, by RRC signaling.
  • the terminal 20 receives reference PRU-related information from the LMF 30, for example, by LPP signaling.
  • the "reference PRU information" in the reference PRU-related information is, for example, information including at least one of the PRU location (PRU location) and the PRU beam information (PRU beam information).
  • the beam information (PRU beam information) is, for example, the angle of the beam transmitted from the TRP to the PRU (e.g., azimuth and elevation). When multiple TRPs are targeted, the beam information is the angle of the beam transmitted to the PRU for each TRP.
  • the "information measured using the reference PRU" in the reference PRU-related information is information that includes at least one of the following: LoS/NLoS indicator values (LoS/NLoS indicator), phase measurement results (CP measurement results), RSTD measurement results (RSTD measurement results), and AoD/ZoD measurement results (AoD/ZoD measurement results (e.g., DL-RSRP, DL-RSRPP)).
  • LoS/NLoS indicator values LoS/NLoS indicator
  • CP measurement results phase measurement results
  • RSTD measurement results RSTD measurement results
  • AoD/ZoD measurement results e.g., DL-RSRP, DL-RSRPP
  • the terminal 20 can use the PRU as an auxiliary during UE-A/UE-B positioning, thereby improving the positioning accuracy.
  • Embodiments 1 to 4 are described below. Each of embodiments 1 to 4 is based on embodiment 0. However, each of embodiments 1 to 4 may be implemented independently of embodiment 0.
  • the terminal 20 (or the base station 10, or the LMF 30) performs positioning calculations for the terminal 20 using the measurement results of the terminal 20 and the measurement results of the reference PRU under the assumptions of the embodiment. For example, in embodiment 1, the terminal 20 performs positioning calculations assuming that the terminal 20 and the reference PRU are within a predetermined angle range with respect to the transmission point of the reference signal used for positioning. More specifically, the measurement results obtained by the reference PRU are determined to be measurement results obtained at a position close to the terminal 20, and positioning calculations are performed.
  • the terminal 20 when the terminal 20 (or the base station 10, or the LMF 30) receives multiple measurement results obtained by multiple PRUs, it may select the measurement results of only the PRU that is determined to be the reference PRU under the conditions (assumeds) of the corresponding embodiment, and use them for positioning calculations.
  • the terminal 20 (or the base station 10 or the LMF 30) assumes that a reference PRU is beam related to the terminal 20.
  • AoD Angle of Departure
  • AoA Angle of Arrival
  • AoD and AoA may also be called the angle of departure and angle of arrival, respectively.
  • AoD is the angle at which the TRP transmits a signal (beam) to the terminal 20.
  • AoD is the angle of a line from the TRP to the terminal 20 from a certain reference direction.
  • AoD Angle of Departure
  • AOD Azimuth angle of departure
  • ZOD Zenith angle of departure
  • Azimuth angle of departure Azimuth angle of departure
  • ZOD Zenith angle of departure
  • Figures 10 and 11 show examples of the transmission azimuth angle and transmission zenith angle when there is TRP1 and a terminal 20 that receives a signal (beam) from TRP1.
  • Figure 10 shows TRP1 and terminal 20 as viewed from the sky. As shown in Figure 10, the angle of the straight line from TRP1 to terminal 20 with respect to the reference direction is the transmission azimuth angle.
  • FIG. 11 is a diagram of TRP1 and terminal 20 viewed from the side. As shown in FIG. 11, the angle of the straight line from TRP1 to terminal 20 with respect to the zenith direction is the transmission zenith angle.
  • AoA is the angle at which the TRP receives a signal from the terminal 20.
  • AoA is the angle of a line from the terminal 20 to the TRP from a certain reference direction.
  • AoA Angle of Arrival
  • ZOA Zenith angle of arrival
  • Figures 12 and 13 show examples of the arrival azimuth angle and arrival zenith angle when there is TRP1 and a terminal 20 that transmits a signal to TRP1.
  • Figure 12 shows TRP1 and terminal 20 as viewed from the sky.
  • the angle of the straight line from terminal 20 to TRP1 relative to the reference direction is the arrival azimuth angle.
  • FIG. 13 is a diagram of TRP1 and terminal 20 viewed from the side. As shown in FIG. 13, the angle of the straight line from terminal 20 to TRP1 relative to the zenith direction is the arrival zenith angle.
  • the angle of transmission and the angle of arrival may be measured in any manner.
  • the TRP can calculate the direction from which the signal from terminal 20 arrived by measuring the signal from terminal 20 using a receiving beam.
  • Example 1 The terminal 20 measures multiple DL-PRSs transmitted from the TRP.
  • the terminal 20 reports the measurement results (e.g., DL RSRPs) to the LMF 30.
  • the base station 10 also notifies the LMF 30 of beam information (e.g., azimuth and elevation angles (or zenith angles) of beams) for each DL-PRS.
  • the LMF 30 determines the AoD (e.g., azimuth and zenith angles) between the terminal 20 and the TRP based on the measurement results received from the terminal 20 and the beam information of each PRS. If multiple AoDs are known, the location of the terminal 20 can be identified.
  • Example 2 The terminal 20 measures multiple DL-PRSs transmitted from the TRP.
  • the base station 10 also notifies the terminal 20 of beam information (e.g., azimuth angle and elevation angle (or zenith angle) of the beam) for each DL-PRS.
  • the terminal 20 can determine the AoD (e.g., azimuth angle and zenith angle) between the terminal 20 and the TRP based on the measurement results and the beam information of each PRS.
  • the transmission angle having a transmission azimuth angle and a transmission zenith angle is just one example. As long as it is possible to identify the angle (direction) of a straight line drawn from the TRP to the terminal 20 in three-dimensional space (or a two-dimensional plane), the transmission angle may be represented by any information.
  • the arrival angle has an arrival azimuth and an arrival zenith is just one example. As long as it is possible to identify the angle (direction) of a straight line drawn from the terminal 20 to the TRP in three-dimensional space (or a two-dimensional plane), the arrival angle may be represented by any information.
  • Option 1 includes options 1-1 and 1-2.
  • Option 1-1 the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU is present within a specific range based on the angle of transmission from the TRP to the terminal 20.
  • the specific range is, for example, ⁇ 15 degrees.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU is present in "a specific azimuth angle range based on the transmission azimuth angle from the TRP for the terminal 20" and "a specific zenith angle range based on the transmission zenith angle from the TRP for the terminal 20.”
  • Figure 14 is a top view of TRP1, PRU 40, and terminal 20.
  • ⁇ 1 is the transmission azimuth angle for terminal 20.
  • ⁇ 2 is the transmission azimuth angle for PRU 40. If the specific range is ⁇ and PRU 40 is the reference PRU, terminal 20 is assumed to be " ⁇ 1 - ⁇ ⁇ ⁇ 2 ⁇ ⁇ 1 + ⁇ ".
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU satisfies the above conditions for each of the multiple TRPs.
  • Option 1-2 the terminal 20 (or the base station 10 or the LMF 30) assumes that the terminal 20 is present within a specific range based on the angle of transmission from the TRP to the reference PRU.
  • the specific range is, for example, ⁇ 15 degrees.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the terminal 20 is present in a "specific azimuth angle range based on the transmission azimuth angle from the TRP for the reference PRU" and a "specific zenith angle range based on the transmission zenith angle from the TRP for the reference PRU.”
  • Figure 14 is a top view of TRP1, PRU 40, and terminal 20.
  • ⁇ 1 is the transmission azimuth angle for terminal 20.
  • ⁇ 2 is the transmission azimuth angle for PRU 40. If the specific range is ⁇ and PRU 40 is the reference PRU, terminal 20 is assumed to be " ⁇ 2 - ⁇ ⁇ ⁇ 1 ⁇ ⁇ 2 + ⁇ ".
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU satisfies the above conditions for each of the multiple TRPs.
  • Option 2 the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU and the terminal 20 are present within a specific range based on the angle of arrival at the TRP.
  • the specific range is, for example, ⁇ 15 degrees.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU and the terminal 20 are present in a "specific azimuth angle range based on the arrival azimuth angle at the TRP" and a "specific zenith angle range based on the arrival zenith angle at the TRP.”
  • FIG. 15 is a diagram of TRP1, PRU 40, and terminal 20 viewed from above.
  • ⁇ 1 is the arrival azimuth angle for terminal 20.
  • ⁇ 2 is the arrival azimuth angle for PRU 40. If the specific range is ⁇ and PRU 40 is the reference PRU, terminal 20 (or base station 10, or LMF 30) assumes that "
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU and the terminal 20 satisfy the above conditions for each of the multiple TRPs.
  • Option 3 the terminal 20 (or the base station 10, or the LMF 30) assumes that the PRS resource index (e.g., DL-PRS resource ID, DL-PRS resource set ID) used by the terminal 20 for measurements is identical to the PRS resource index used by the reference PRU for measurements.
  • the PRS resource index e.g., DL-PRS resource ID, DL-PRS resource set ID
  • the terminal 20 (and each of the base station 10 and LMF 30) may assume that the PRS that the terminal 20 receives for measurement is the same as the PRS that the reference PRU receives for measurement.
  • Option 4 is a combination of any or all of options 1-1, 1-2, 2, and 3.
  • terminals and reference PRUs can be appropriately grouped, and as a result, the accuracy of terminal positioning can be improved.
  • the terminal 20 (or the base station 10, or the LMF 30) is associated with the terminal 20 by a Cell (TRP)-ID (Cell (TRP)-ID related).
  • the second embodiment has the following options 1 to 3. In the following options 1 to 3, the Cell-ID may be replaced with the TRP-ID.
  • Option 1 the terminal 20 (or the base station 10 or the LMF 30) assumes that the cell in which the terminal 20 serves is the same as the cell in which the reference PRU serves.
  • the terminal 20 may assume that the Cell-ID of the cell in which the terminal 20 is located is the same as the Cell-ID of the cell in which the reference PRU is located.
  • Option 2 the terminal 20 (or the base station 10 or the LMF 30) assumes that the cell in which the terminal 20 serves and the cell in which the reference PRU serves are adjacent to each other.
  • the terminal 20 may determine that the cell in which the terminal 20 is located and the cell in which the reference PRU is located are adjacent based on the Cell-ID of the cell in which the terminal 20 is located and the Cell-ID of the cell in which the reference PRU is located.
  • Option 3 is a combination of options 1 and 2.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the cell in which the terminal 20 is located and the cell in which the reference PRU is located are the same, or that the cell in which the terminal 20 is located and the cell in which the reference PRU is located are adjacent to each other.
  • terminals and reference PRUs can be appropriately grouped, and as a result, the accuracy of terminal positioning can be improved.
  • the terminal 20 (or the base station 10 or the LMF 30) assumes that the reference PRU is distance related to the terminal 20.
  • the third embodiment has the following options 1 to 4.
  • Option 1 the terminal 20 (or the base station 10 or the LMF 30) assumes that the distance between the terminal 20 and the reference PRU is within a predetermined distance (eg, X [m]).
  • a predetermined distance eg, X [m]
  • the terminal 20 (or the base station 10, or the LMF 30) selects a reference PRU (measurement results) from multiple PRUs (measurement results)
  • the terminal 20 (or the base station 10, or the LMF 30) can select a PRU located within X [m] of the terminal 20 as the reference PRU by using the terminal 20's location information (UE location information) and the PRU's location information.
  • Option 2 the terminal 20 (or the base station 10, or the LMF 30) assumes that the magnitude of the difference between the signal propagation time between the terminal 20 and the TRP and the signal propagation time between the reference PRU and the TRP is within a predetermined value (e.g., Y [ms]).
  • a predetermined value e.g., Y [ms]
  • the signal propagation time between the terminal 20/reference PRU and the TRP may be the signal propagation time from the TRP to the terminal 20/reference PRU, or the signal propagation time from the terminal 20/reference PRU to the TRP.
  • the above difference can be obtained, for example, from the reception time at the terminal 20 and the reception time at the reference PRU of a reference signal transmitted from a TRP at a certain timing (time).
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU and the terminal 20 satisfy the above conditions for each of the multiple TRPs.
  • Option 3 the terminal 20 (or the base station 10, or the LMF 30) assumes that the magnitude of the difference (which may be a ratio, or the "difference" may include the meaning of ratio) between the received power of the PRS that the terminal 20 receives from the TRP and the received power of the PRS that the reference PRU receives from the TRP is within a predetermined value (e.g., Z [dBm]).
  • a predetermined value e.g., Z [dBm]
  • the terminal 20 may assume that the magnitude of the difference (which may be a ratio, or the "difference" may include the meaning of ratio) between the received power of the PRS that the TRP receives from the terminal 20 and the received power of the PRS that the TRP receives from the reference PRU is within a predetermined value (e.g., Z [dBm]).
  • a predetermined value e.g., Z [dBm]
  • the terminal 20 selects a reference PRU (measurement results) from multiple PRUs (measurement results), it can select a PRU whose received power difference with respect to the terminal 20 is within the range of Z [dBm] as the reference PRU.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the reference PRU and the terminal 20 satisfy the above conditions for each of the multiple TRPs.
  • X, Y, and Z may be uniquely defined in the specifications, or may be notified to the terminal 20 by the base station 10/LMF 30 via RRC/LPP.
  • Option 4 is a combination of any or all of options 1-3.
  • terminals and reference PRUs can be appropriately grouped, thereby improving the accuracy of terminal positioning.
  • the terminal 20 (or the base station 10 or the LMF 30) assumes that the reference PRU is associated with the terminal 20 by LoS/NLoS (LoS/NLoS related).
  • the LoS/NLoS indicator is an index value that indicates the likelihood of a Line-of-Sight of the propagation path from the transmitter (e.g., TRP) to the receiver (e.g., terminal 20) of the PRS.
  • the LoS/NLoS indicator has a soft value and a hard value, and either the soft value or the hard value is notified from the base station 10 or the LMF 30 to the target (e.g. the terminal 20 serving as the receiver).
  • the soft value is a number between 0 and 1 (a probability estimate) with a resolution of 0.1 that indicates the likelihood of a Line-of-Sight for the propagation path.
  • 0 indicates NLOS (Non-Line-of-Sight) and 1 indicates LOS (Line-of-Sight).
  • the hard value indicates whether the line of sight of the propagation path from the sender (e.g., TRP) to the receiver (e.g., terminal 20) is LOS (true) or NLOS (false).
  • TRP sender
  • receiver e.g., terminal 20
  • LOS true
  • NLOS false
  • Option 1 the terminal 20 (or the base station 10 or the LMF 30) assumes that the hard value of the LoS/NLoS indicator at the terminal 20 and the hard value of the LoS/NLoS indicator at the reference PRU are identical.
  • the terminal 20 (or the base station 10, or the LMF 30) assumes that the hard value of the LoS/NLoS indicator at the terminal 20 is LoS (i.e., 1 or true) and that the hard value of the LoS/NLoS indicator at the reference PRU is also LoS.
  • the LoS/NLoS indicators of the terminal 20 and the reference PRU are, for example, values for a certain TRP (or a certain PRS resource).
  • the terminal 20 or the base station 10, or the LMF 30
  • the reference PRU and the terminal 20 satisfy the above conditions for each of the multiple TRPs (multiple PRS resources).
  • W a predetermined value
  • the LoS/NLoS indicators of the terminal 20 and the reference PRU are, for example, values for a certain TRP (or a certain PRS resource).
  • the terminal 20 or the base station 10, or the LMF 30
  • the reference PRU and the terminal 20 satisfy the above conditions for each of the multiple TRPs (multiple PRS resources).
  • W may be uniquely defined in the specifications, or may be notified from the base station 10/LMF 30 to the terminal 20 via RRC/LPP.
  • Option 3 is a combination of options 1 and 2. That is, the terminal 20 (or the base station 10, or the LMF 30) assumes that the conditions of option 1 or the conditions of option 2 are satisfied for the terminal 20 and the reference PRU.
  • terminals and reference PRUs can be appropriately grouped, and as a result, the accuracy of terminal positioning can be improved.
  • Reference PRU may be interpreted as “assisted (positioning) device”, “assisted (positioning) unit”, “reference (positioning) device”, “reference location point”, etc.
  • DL positioning i.e., using DL-PRS
  • DL positioning may also be read as UL positioning (i.e., using SRS for positioning, or using SRS).
  • the PRU may be assumed to be a unit with the same functions as a UE or TRP in terms of specifications.
  • the PRU and UE may appear to be the same from the TRP (i.e., they cannot be distinguished from the TRP's perspective).
  • signaling may be interpreted as “configure by RRC,” “activate/deactivate/update by MAC-CE,” “indicate by DCI,” etc.
  • Carrier Phase Measurement may be interpreted as “Carrier Phase Positioning (CPP)” or “Phase-based positioning”, etc.
  • the base station 10 and the terminal 20 include functions for implementing all of the above-mentioned embodiments. However, the base station 10 and the terminal 20 may each include only the functions of any of the embodiments among all of the embodiments.
  • Fig. 16 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in Fig. 16 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any.
  • the transmitting unit 110 and the receiving unit 120 may be collectively referred to as a communication unit.
  • the transmitting unit 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly.
  • the transmitting unit 110 can also transmit a signal to a network device such as the LMF 30.
  • the receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signal.
  • the receiving unit 120 can also receive a signal from a network device such as the LMF 30.
  • the transmitting unit 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DCI via PDCCH, data via PDSCH, etc. to the terminal 20.
  • the setting unit 130 stores pre-set setting information and various setting information to be transmitted to the terminal 20 in a storage device provided in the setting unit 130, and reads it from the storage device as necessary.
  • the control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110.
  • the functional unit related to signal transmission in the control unit 140 may be included in the transmission unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the reception unit 120.
  • the LMF 30 may also have the configuration shown in FIG. 16.
  • the transmitting unit 110 transmits signals to other network devices (including base stations), and the receiving unit 120 receives signals from other network devices (including base stations).
  • Fig. 17 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in Fig. 17 is merely an example. As long as the operation related to the embodiment of the present invention can be executed, the names of the functional divisions and the functional units may be any.
  • the transmitting unit 210 and the receiving unit 220 may be collectively referred to as a communication unit.
  • the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
  • the receiver 220 receives various signals wirelessly and obtains higher layer signals from the received physical layer signals.
  • the receiver 220 also has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, DCI via PDCCH, data via PDSCH, etc. transmitted from the base station 10.
  • the transmitting unit 210 may transmit a PSCCH (Physical Sidelink Control Channel), a PSSCH (Physical Sidelink Shared Channel), a PSDCH (Physical Sidelink Discovery Channel), a PSBCH (Physical Sidelink Broadcast Channel), or the like to another terminal 20 as D2D communication, and the receiving unit 220 may receive a PSCCH, a PSSCH, a PSDCH, or a PSBCH, or the like, from the other terminal 20.
  • a PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • the setting unit 230 stores various setting information received from the base station 10 or other terminals by the receiving unit 220 in a storage device provided in the setting unit 230, and reads it from the storage device as necessary.
  • the setting unit 230 also stores setting information that is set in advance.
  • the control unit 240 controls the terminal 20.
  • the functional units in the control unit 240 related to signal transmission may be included in the transmitting unit 210, and the functional units in the control unit 240 related to signal reception may be included in the receiving unit 220.
  • the transmitting unit 210 may be called a transmitter, and the receiving unit 220 may be called a receiver. Note that the phase measurement may be performed by the receiving unit 220 or the control unit 240.
  • the terminal 20 and the base station 10 may be configured as, for example, the terminals and base stations described in the following sections.
  • a receiving unit that receives setting information indicating a predetermined positioning method;
  • a terminal comprising: a control unit that assumes that information related to the position reference device is notified.
  • the control unit is Assume that the terminal and the position reference device are within a predetermined angle range with respect to a transmitting/receiving point of a reference signal used for positioning; Assume that the cell to which the terminal belongs and the cell to which the position reference device belongs are the same or adjacent; Assume that the terminal and the position reference device are within a predetermined distance range; or The terminal according to claim 1 or 2, wherein the line of sight state of the terminal with respect to a transmission/reception point and the line of sight state of the position reference device with respect to a transmission/reception point are assumed to be the same, or the difference in the line of sight state is within a predetermined range.
  • a transmitter that transmits setting information indicating a predetermined positioning method to the terminal;
  • a base station comprising: a control unit that assumes that information related to a position reference device is notified to the terminal.
  • (Additional Note 5) receiving configuration information indicating a predetermined positioning method; and assuming that information related to a position reference device is to be notified.
  • any of the configurations described in the above paragraphs provide technology that allows the use of an appropriate PRU in terminal positioning.
  • positioning can be performed using the "position, beam information, measurement results" of the reference PRU.
  • the terminal and the reference PRU can be appropriately grouped.
  • each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.).
  • the functional block may be realized by combining the one device or the multiple devices with software.
  • Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs the transmission function is called a transmitting unit or transmitter.
  • the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 18 is a diagram showing an example of the hardware configuration of the base station 10, terminal 20, and LMF 30 in one embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
  • the term "apparatus” may be interpreted as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10, terminal 20, and LMF 30 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
  • the functions of the base station 10 and the terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and the storage device 1002, causing the processor 1001 to perform calculations, control communications by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be realized by the processor 1001.
  • the processor 1001 reads out a program (program code), software module, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program.
  • the program is a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment.
  • the control unit 140 of the base station 10 shown in FIG. 16 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 17 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
  • the storage device 1002 may also be called a register, a cache, a main memory, etc.
  • the storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method relating to one embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc.
  • the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, etc. may be realized by the communication device 1004.
  • the transmitting/receiving unit may be implemented as a transmitting unit or a receiving unit that is physically or logically separated.
  • the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
  • the base station 10, the terminal 20, and the LMF 30 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array), and some or all of the functional blocks may be realized by the hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the processor 1001 may be implemented using at least one of these pieces of hardware.
  • FIG. 19 shows an example of the configuration of the vehicle 2001.
  • the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013.
  • the terminal 20 or the base station 10 according to each aspect/embodiment described in this disclosure may be applied to a communication device mounted on the vehicle 2001, for example, may be applied to the communication module 2013.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.
  • the information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.
  • the information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.
  • input devices e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • output devices e.g., a display, a speaker, an LED lamp, a touch panel, etc.
  • the driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) maps, autonomous vehicle (AV) maps, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, and AI processor, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
  • the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided on the vehicle 2001.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, etc.
  • the communication module 2013 may transmit at least one of the signals from the various sensors 2021-2028 described above input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication.
  • the electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input.
  • the PUSCH transmitted by the communication module 2013 may include information based on the above input.
  • the communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001.
  • the information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013).
  • the communication module 2013 also stores various information received from an external device in a memory 2032 that can be used by the microprocessor 2031.
  • the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.
  • the operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts.
  • the order of processing procedures described in the embodiment may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor possessed by the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor possessed by the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods.
  • the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
  • Each aspect/embodiment described in this disclosure may be a mobile communication system (mobile communications system) for mobile communications over a wide range of networks, including LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Ra).
  • the present invention may be applied to at least one of systems using IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (for example, a combination of at least one
  • certain operations that are described as being performed by the base station 10 may in some cases be performed by its upper node.
  • various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW).
  • the base station 10 may be a combination of multiple other network nodes (such as an MME and an S-GW).
  • the information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.
  • the input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table.
  • the input and output information may be overwritten, updated, or added to.
  • the output information may be deleted.
  • the input information may be sent to another device.
  • the determination in this disclosure may be based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., a comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
  • wireless technologies such as infrared, microwave
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • the channel and the symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.
  • system and “network” are used interchangeably.
  • a radio resource may be indicated by an index.
  • the names used for the above-mentioned parameters are not limiting in any respect. Furthermore, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • access point e.g., "transmission point”
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
  • a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • At least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
  • the moving object is a movable object, and the moving speed is arbitrary. It also includes the case where the moving object is stopped.
  • the moving object includes, but is not limited to, for example, a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, an excavator, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a handcar, a rickshaw, a ship and other watercraft, an airplane, a rocket, an artificial satellite, a drone (registered trademark), a multicopter, a quadcopter, a balloon, and objects mounted thereon.
  • the moving object may also be a moving object that travels autonomously based on an operation command.
  • At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a terminal.
  • each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
  • the terminal 20 may be configured to have the functions of the base station 10 described above.
  • terms such as "uplink” and "downlink” may be read as terms corresponding to communication between terminals (for example, "side”).
  • the uplink channel, downlink channel, etc. may be read as a side channel.
  • the terminal in this disclosure may be interpreted as a base station.
  • the base station may be configured to have the functions of the terminal described above.
  • determining may encompass a wide variety of actions.
  • Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), and considering ascertaining as “judging” or “determining.”
  • determining and “determining” may include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and considering ascertaining as “judging” or “determining.”
  • judgment” and “decision” can include considering resolving, selecting, choosing, establishing, comparing, etc., to have been “judged” or “decided.” In other words, “judgment” and “decision” can include considering some action to have been “judged” or “decided.” Additionally, “judgment (decision)” can be interpreted as “assuming,” “ex
  • connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof.
  • “connected” may be read as "access.”
  • two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
  • the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
  • a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • radio frame structure a specific filtering process performed by the transceiver in the frequency domain
  • a specific windowing process performed by the transceiver in the time domain etc.
  • a slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.).
  • a slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name that corresponds to the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, or one slot or one minislot may be called a TTI.
  • TTI transmission time interval
  • the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
  • the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
  • one slot may be called a unit time. The unit time may differ for each cell depending on the numerology.
  • TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units.
  • wireless resources such as frequency bandwidth and transmission power that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., the number of symbols
  • the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit of scheduling.
  • the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may be determined based on the numerology.
  • the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within the BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured for a UE within one carrier.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots, and symbols are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean “A and B are each different from C.”
  • Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • notification of specific information is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).
  • Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention propose un terminal comprenant : une unité de réception qui reçoit des informations de réglage indiquant un procédé de positionnement prédéterminé; et une unité de commande qui suppose que des informations relatives à un dispositif de référence de position doivent être notifiées.
PCT/JP2022/041457 2022-11-07 2022-11-07 Terminal, station de base et procédé de communication WO2024100744A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4061068A1 (fr) * 2019-11-11 2022-09-21 Datang Mobile Communications Equipment Co., Ltd. Procédé et appareil de détermination de décalage d'horloge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4061068A1 (fr) * 2019-11-11 2022-09-21 Datang Mobile Communications Equipment Co., Ltd. Procédé et appareil de détermination de décalage d'horloge

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CATT: "Discussion on improved accuracy based on NR carrier phase measurement", 3GPP DRAFT; R1-2208983, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20221010 - 20221019, 30 September 2022 (2022-09-30), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052276903 *
HUAWEI, HISILICON: "Evaluation and solutions for NR carrier phase positioning", 3GPP DRAFT; R1-2205870, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Toulouse, France; 20220822 - 20220826, 12 August 2022 (2022-08-12), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052273800 *

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