Terminal, base station, management device, and communication method

Abstract

A terminal is provided with: a reception unit that receives carrier phase positioning setting information from a network; and a control unit that envisages, in carrier phase positioning, information indicating a positioning method to be used in the determination of the number of waves to be notified by the network.

Description

Technical Field

[0001] The present invention relates to positioning technology in a wireless communication system. Background Art

[0002] 3GPP (registered trademark) (3rd Generation Partnership Project) is conducting research on a wireless communication method known as 5G or NR (New Radio) (hereinafter referred to as "NR") to achieve further increases in system capacity, higher data transmission speeds, and lower latency within wireless networks. In 5G, various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more and a latency of 1 ms or less within wireless networks.

[0003] Furthermore, research is underway into NR positioning, which uses reference signals for positioning. Furthermore, as a functional extension of general-purpose NR positioning, research is underway into Carrier Phase Positioning (CPP), a high-precision positioning method that uses the carrier phase employed in GNSS and other systems.

[0004] Prior art literature

[0005] Non-patent literature

[0006] Non-Patent Document 1: 3GPP TS 37.355 V17.4.0 (2023-03)

[0007] Non-Patent Document 2: 3GPP TS 38.455 V17.4.0 (2023-03) Summary of the Invention

[0008] Problems to be solved by the invention

[0009] In order to resolve ambiguity in carrier phase positioning, for example, to calculate its initial value, studies are underway to utilize existing positioning methods.

[0010] However, there is a problem that it is unclear for terminals and base stations which positioning method should be used to resolve ambiguity.

[0011] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a technology capable of applying an appropriate positioning method to resolve ambiguity in carrier phase positioning.

[0012] Means for solving problems

[0013] According to the disclosed technology, a terminal is provided, which comprises:

[0014] a receiving unit that receives carrier phase positioning setting information from a network; and

[0015] The control unit assumes that, in carrier phase positioning, information indicating a positioning method used to determine the wave number is notified from the network.

[0016] Effects of the Invention

[0017] According to the disclosed technology, it is possible to apply appropriate positioning methods to resolve ambiguities in carrier phase positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are numbered at the back.

[0019] Figure 1 It is a diagram for explaining a wireless communication system in an embodiment of the present invention.

[0020] Figure 2 It is a diagram for explaining a wireless communication system in an embodiment of the present invention.

[0021] Figure 3 This is a diagram showing a configuration in which a plurality of base stations exist.

[0022] Figure 4 This is a diagram for explaining carrier phase positioning (CPP).

[0023] Figure 5 This is a diagram for explaining carrier phase positioning (CPP).

[0024] Figure 6 is a timing diagram showing an example of signaling.

[0025] Figure 7 A diagram showing an example of information notified through signaling.

[0026] Figure 8 is a timing diagram showing an example of signaling.

[0027] Figure 9 A diagram showing an example of information notified through signaling.

[0028] Figure 10 A diagram showing an example of information notified through signaling.

[0029] Figure 11 A diagram showing an example of information notified through signaling.

[0030] Figure 12 A diagram showing an example of information notified through signaling.

[0031] Figure 13 This is an example of a request / response sequence.

[0032] Figure 14 A diagram showing an example of information notified through signaling.

[0033] Figure 15 A diagram showing an example of information notified through signaling.

[0034] Figure 16 This is a sequence example of capability information reporting.

[0035] Figure 17 This is a diagram showing an example of the functional configuration of the base station 10 and the LMF 30 in the embodiment of the present invention.

[0036] Figure 18 This is a diagram showing an example of the functional configuration of the terminal 20 in the embodiment of the present invention.

[0037] Figure 19 This is a diagram showing an example of the hardware configuration of the base station 10, the terminal 20, or the LMF 30 in the embodiment of the present invention.

[0038] Figure 20 This is a diagram showing an example of a vehicle. DETAILED DESCRIPTION

[0039] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below are merely examples, and embodiments to which the present invention is applied are not limited to the following embodiments.

[0040] (System Structure)

[0041] Figure 1 1 is a diagram for explaining a wireless communication system in an embodiment of the present invention. Figure 1 As shown, the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20. Furthermore, the core network includes an LMF 30 capable of communicating with the base station 10. Furthermore, the LMF 30 can also communicate with the base station 10 via the AMF. The LMF 30 is an example of a network device. The base station 10 is also an example of a network device. Furthermore, the LMF 30 can also be referred to as a management device.

[0042] exist Figure 1 Although one base station 10 and one terminal 20 are shown in the figure, this is an example and multiple base stations 10 may be provided. For example, multiple base stations 10 may be provided as the transmission source of the DL-PRS (positioning reference signal) received by the terminal 20. One, multiple, or all of the multiple base stations 10 may be airborne devices (e.g., satellites or HAPS).

[0043] The transmission source of DL-PRS can also be called TRP (transmission reception point). TRP can be called a transmission point or a reception point. TRP can also be called a base station.

[0044] Base station 10 is a communication device that provides one or more cells and conducts wireless communications with terminal 20. Physical resources for wireless signals are defined in the time and frequency domains. The time domain can be defined by the number of OFDM symbols, while the frequency domain can be defined by the number of subcarriers or resource blocks. Furthermore, in the time domain, a TTI (Transmission Time Interval) can be a time slot or a subframe. Furthermore, cell and CC can be considered synonymous.

[0045] The base station 10 can perform carrier aggregation for bundling multiple cells (multiple CCs (Component Carriers)) to communicate with the terminal 20. In carrier aggregation, one PCell (Primary Cell) and one or more SCells (Secondary Cells) are used.

[0046] The base station 10 sends synchronization signals and system information to the terminal 20. Synchronization signals are, for example, NR-PSS and NR-SSS. System information is sent, for example, via NR-PBCH or PDSCH, and is also called broadcast information. Figure 1 As shown, the base station 10 transmits control signals or data to the terminal 20 via the DL (Downlink) and receives control signals or data from the terminal 20 via the UL (Uplink). Here, content transmitted via control channels such as the PUCCH and PDCCH is referred to as control signals, while content transmitted via shared channels such as the PUSCH and PDSCH is referred to as data. However, these terms are merely examples. Furthermore, UCI (Uplink Control Information) is transmitted via the PUCCH or PUSCH.

[0047] The terminal 20 is a communication device having a wireless communication function, such as a smart phone, a mobile phone, a tablet computer, a wearable terminal, or an M2M (Machine-to-Machine) communication module. Figure 1 As shown, terminal 20 receives control signals or data from base station 10 via the DL and transmits control signals or data to base station 10 via the UL, thereby utilizing various communication services provided by the wireless communication system. Alternatively, terminal 20 may be referred to as a UE, and base station 10 as a gNB. Furthermore, both terminal 20 and base station 10 have carrier phase positioning capabilities.

[0048] The terminal 20 can perform carrier aggregation to bundle multiple cells (multiple CCs (component carriers)) and communicate with the base station 10. Carrier aggregation uses one PCell (primary cell) and one or more SCells (secondary cells). Alternatively, a PUCCH-SCell having a PUCCH can be used.

[0049] The LMF (Location Management Function) 30 is a function (device) responsible for communication control related to the location information service specified in 5GC. The LMF 30 may also be referred to as a location management server, location management device, or management device. For example, the LMF 30 can receive reference signal measurement results (such as phase, received power, time difference, and angle) from the terminal 20 or base station 10 and calculate the location of the terminal 20. Furthermore, the LMF 30 can provide configuration information or control information related to positioning to the terminal 20 and base station 10.

[0050] Figure 2 FIG. 1 shows a configuration example of a wireless communication system in which DC (Dual Connectivity) is performed. Figure 2 As shown, a base station 10A serving as a MN (Master Node) and a base station 10B serving as a SN (Secondary Node) are provided. The base stations 10A and 10B are each connected to a core network 40. The terminal 20 can communicate with both the base stations 10A and 10B.

[0051] The cell group provided by base station 10A, which serves as an MN, is called an MCG (Master Cell Group), and the cell group provided by base station 10B, which serves as an SN, is called an SCG (Secondary Cell Group). In a DC, an MCG consists of one PCell and one or more SCells, and an SCG consists of one PSCell (Primary SCell) and one or more SCells.

[0052] The processing actions in this embodiment can be Figure 1 The system structure shown can also be implemented by Figure 2 The present invention may be executed by the system configuration shown, but may also be executed by system configurations other than these. Figure 3 The following example shows a case where the terminal 20 performs positioning by receiving reference signals from a plurality of base stations 10A to 10C. For example, the position of the terminal 20 can be determined by determining the distances (or angles) between the terminal 20 and the plurality of base stations.

[0053] The distance between the terminal 20 and the base station can be obtained from the arrival time of the signal or the wave number of the signal carrier (wave number x wavelength). In this embodiment, as described later, the wave number of the carrier is used.

[0054] (About carrier phase measurement)

[0055] The reference signal used for positioning is called a PRS (Positioning Reference Signal). In this embodiment, the terminal 20 or the base station 10 performs carrier phase positioning (CPP). CPP is a high-precision positioning method that uses the carrier phase used in GNSS and other systems. Furthermore, the terminal 20 or the base station 10 can perform carrier phase positioning by measuring the phase of the received signal or by performing position calculation (distance calculation) in conjunction with the phase measurement.

[0056] Figure 4 An overview of CPP is shown. Figure 4 FIG. 1 shows an example in which the base station 10 is a satellite. Figure 4 As shown, in CPP, the distance between the base station 10 and the positioning point is calculated using the number of carrier waves and the carrier wave reception phase difference (the phase of the portion less than one wave), thereby determining the position of the positioning point. Specifically, the arrival distance L can be expressed as "arrival distance (L) = carrier wavelength (λ) × number of waves (N) + offset due to the reception phase difference (Δλ)." Furthermore, the phase at t0' is calculated using the transmission time (t0) and the reception time (t0'). More specifically, after calculating the pseudorange based on the propagation time, the number of carrier waves and the phase are used to perform a more accurate distance calculation.

[0057] The phase corresponding to Δλ can be obtained by measuring the reference signal, but the wave number (N) cannot be determined by a single measurement. Figure 5 As shown, when the L1 signal is used, there are approximately 500 candidates for N (wave number) in a width of 100 m.

[0058] In CPP, the process of determining the wave number (N) is called ambiguity resolution (AR). In GNSS, AR is generally performed after calculating an initial wave number using multiple satellites (= using propagation time to narrow down position candidates to some extent).

[0059] As a method for determining the wave number (N), several methods have been proposed, and the following methods (1) and (2) are representative methods.

[0060] (1) Method using multiple carriers of different frequencies

[0061] By using the phases of carrier waves with different wavelengths (frequencies), the number of candidate points can be significantly reduced. For example, an L1 signal (1575.42 MHz) and an L2 signal (1227.60 MHz) can be used as carrier waves with different wavelengths.

[0062] (2) Methods using satellite movement

[0063] Since the coordinates of GPS satellites change all the time, the number of waves (N) is reduced by having the receiver receive the signal multiple times.

[0064] (About the topic)

[0065] 3GPP (registered trademark) is studying methods that utilize existing positioning methods (referred to herein as legacy positioning methods) as a method for ambiguity resolution in CPP. Examples of existing positioning methods include TDOA, Multi-RTT, RSTD, RTOA, UE Rx-Tx time difference measurements, and gNB Rx-Tx time difference measurements.

[0066] The CPP process example in this method is as follows. Furthermore, "terminal 20 / base station 10" indicates that the entity performing CPP can be either terminal 20 or base station 10. Furthermore, in this specification, " / " means "or" unless otherwise specified.

[0067] Step 1: The terminal 20 / base station 10 performing CPP resolves ambiguity using a legacy positioning method, thereby determining the approximate wave number (N) and propagation distance. This approximate wave number (N) can also be referred to as the initial value. Alternatively, the terminal 20 / base station 10 can measure reference signals using a legacy positioning method and notify the LMF 30 of the measurement results, which then calculates the initial value.

[0068] Step 2: Terminal 20 / base station 10 uses the received phase value to determine the wave number (N) and calculate the propagation distance with a granularity smaller than the carrier wave. Alternatively, terminal 20 / base station 10 may notify LMF 30 of the measured received phase value, and LMF 30 may calculate the propagation distance with a granularity smaller than the carrier wave.

[0069] However, the terminal 20 / base station 10 does not clearly know which legacy positioning method should be used for ambiguity resolution. In other words, it is unclear how to appropriately indicate or switch between legacy positioning methods used for CPP ambiguity resolution.

[0070] Hereinafter, a method for indicating or switching a legacy positioning method used for ambiguity resolution in CPP (NR CPP) will be proposed, and a technique for realizing a flexible ambiguity resolution function corresponding to the positioning environment will be described.

[0071] (Overview of Embodiments)

[0072] Hereinafter, as embodiments for solving the above-mentioned problems, Embodiments 0 to 4 will be described. The outlines of Embodiments 0 to 4 are as follows.

[0073] Implementation 0 (high-level proposal): The terminal 20 assumes that NR CPP and other NR positioning methods are configured at the same time.

[0074] Embodiment 1: The terminal 20 assumes that the NR positioning method applied to ambiguity resolution of NR CPP is signaled through RRC / MAC-CE / DCI / LPP.

[0075] Embodiment 2: It is assumed that the terminal 20 determines the NR positioning method to be applied to the ambiguity resolution of the NR CPP based on the assistance data.

[0076] Embodiment 3: It is assumed that the terminal 20 requests assistance data required for NR CPP ambiguity resolution from the network.

[0077] Embodiment 4: Terminal 20 reports the capability (capability information) related to NR CPP ambiguity resolution to the network.

[0078] In the above-described Embodiments 0 to 4, the assumed subject is the terminal 20 , but the assumed subject may also be the base station 10 .

[0079] Each embodiment will be described in detail below. Any number or all of Embodiments 0 to 4 can be combined and implemented.

[0080] (Implementation Method 0)

[0081] First, Embodiment 0 will be described. In Embodiment 0, the terminal 20 / base station 10 assumes that NR CPP and other NR positioning methods are configured simultaneously.

[0082] For example, in downlink CPP (DL CPP), NR CPP and another NR positioning method (NR positioning method) are simultaneously configured for the terminal 20 from the base station 10 / LMF 30 (network).

[0083] In addition, in the uplink CPP (UL CPP), for example, the NR CPP and another NR positioning method (NR positioning method) are simultaneously set from the LMF 30 to the base station 10.

[0084] It is an example to set NR CPP and another NR positioning method simultaneously for the terminal 20 / base station 10. NR CPP and another NR positioning method may be set for the terminal 20 / base station 10 at different timings.

[0085] Furthermore, the CPP configuration information notified from the base station 10 / LMF 30 to the terminal 20 may include, for example, an instruction (request) to perform CPP and resources of a DL reference signal for performing phase measurement.

[0086] Furthermore, the CPP setting information notified from the LMF 30 to the base station 10 may include, for example, an instruction (request) to perform CPP and a resource of a UL reference signal for performing phase measurement.

[0087] It is also conceivable that, upon receiving the CPP configuration information, the terminal 20 / base station 10 is notified from the network / LMF 30 of information indicating the positioning method used for CPP ambiguity resolution.

[0088] Any method may be used by the LMF 30 to determine the NR positioning method to be applied for CPP in the terminal 20 / base station 10. For example, similar to Embodiment 2 described later, the determination may be based on the measurement quality in the terminal 20 / base station 10, etc.

[0089] The operations of Embodiments 1 to 3 described below are operations when CPP is set (or requested) for the terminal 20 / base station 10. However, the present invention is not limited thereto.

[0090] Next, Embodiment 1 will be described. Embodiment 1 will be described separately as Embodiment 1-1 and Embodiment 1-2. Embodiment 1-1 and Embodiment 1-2 may be combined and implemented.

[0091] (Implementation 1-1)

[0092] First, Embodiment 1-1 will be described. In Embodiment 1-1, the terminal 20 assumes that the NR positioning method used for ambiguity resolution in NR CPP is signaled via RRC / MAC-CE / DCI / LPP.

[0093]

[0094] In downlink CPP (DL CPP), the terminal 20 performs CPP by receiving a reference signal. Figure 6 As shown, in S101, the base station 10 / LMF 30 notifies (signals) the terminal 20 of the DL positioning method to be used for ambiguity resolution. The terminal 20 receives the DL positioning method. The signaling method is, for example, RRC / MAC-CE / DCI / LPP.

[0095] In step S101, the terminal 20 that receives the DL positioning method calculates ambiguity resolution using the measurement results of the DL-PRS resource (or DL-PRS resource set) corresponding to the DL positioning method. The terminal 20 may also notify the LMF 30 of the measurement results, and the LMF 30 performs ambiguity resolution calculations.

[0096] Figure 7 An example of LPP signaling notified from LMF 30 to terminal 20 is shown (a modified example from non-patent document 1). Figure 7 In the example shown, the DL positioning method used in ambiguity resolution is notified via the nr-AssistedPosMethod-r18 information element.

[0097]

[0098] In uplink CPP, for example, the base station 10 performs CPP by receiving a reference signal.

[0099] like Figure 8 As shown, in S201, LMF 30 notifies base station 10 of the UL positioning method to be used for ambiguity resolution. In this case, LMF 30 requests (configures) base station 10 to perform positioning measurements based on CPP. This request information (configuration information) includes the UL positioning method to be applied.

[0100] Figure 9 An example of signaling notified from LMF 30 to base station 10 is shown (a modified example from non-patent document 2). Figure 9 In the example shown, the UL positioning method used for ambiguity resolution is notified through the Assisted pos method for CPP information element.

[0101] In both DL CPP and UL CPP, if the NR positioning method combined with NR CPP is not signaled, it can be assumed that the terminal 20 / base station 10 performs NR CPP independent positioning (standalone mode).

[0102] (Implementation 1-2)

[0103] Next, Embodiment 1-2 is described. In Embodiment 1-2, the terminal 20 / base station 10 assumes that the measurement metric used for ambiguity resolution in NR CPP is signaled via RRC / MAC-CE / DCI / LPP.

[0104]

[0105] In downlink CPP (DL CPP), the terminal 20 performs CPP by receiving a reference signal. Figure 6 As shown, in S101, the base station 10 / LMF 30 notifies (signals) the terminal 20 of the DL measurement metric used in ambiguity resolution. The terminal 20 receives the DL measurement metric. The signaling method is, for example, RRC / MAC-CE / DCI / LPP.

[0106] In step S101, terminal 20, having received the DL measurement metric, calculates ambiguity resolution using the measurement result of the DL-PRS resource (or DL-PRS resource set) corresponding to the DL measurement metric. Terminal 20 may also notify LMF 30 of the measurement result, and LMF 30 performs ambiguity resolution calculation.

[0107] Figure 10 An example of LPP signaling notified from LMF 30 to terminal 20 is shown (a modified example from non-patent document 1). Figure 10 In the example shown, the DL measurement metric used in ambiguity resolution is notified via the nr-AssistedPosMetric-r18 information element.

[0108]

[0109] In uplink CPP, for example, the base station 10 performs CPP (Carrier Phase Positioning) by receiving a reference signal.

[0110] like Figure 8 As shown, in S201, LMF 30 notifies base station 10 of the UL measurement metric to be used for ambiguity resolution. In this case, LMF 30 requests (configures) positioning measurements based on CPP from base station 10. This configuration information includes the UL measurement metric to be applied.

[0111] Figure 11 An example of signaling notified from LMF 30 to base station 10 is shown (a modified example from non-patent document 2). Figure 11 In the example shown, the UL measurement metric used in ambiguity resolution is notified through the Assisted POS method for CPP information element.

[0112] In both DL CPP and UL CPP, if the measurement metric combined with NR CPP is not signaled, it can be assumed that the terminal 20 / base station 10 performs NR CPP independent positioning (standalone mode).

[0113] (Effects of Embodiment 1)

[0114] By using the technology according to the first embodiment, for example, a desired positioning method can be reliably instructed (controlled) to the terminal 20 / base station 10 by the LMF 30 that manages position information.

[0115] (Implementation Method 2)

[0116] Next, Embodiment 2 will be described. In Embodiment 2, the terminal 20 / base station 10 assumes that the NR positioning method used to resolve ambiguity in the NR CPP is determined based on assistance data. Embodiment 2 includes Options 1 to 3. Each option is described below.

[0117] <Option 1>

[0118] In option 1, the terminal 20 / base station 10 uses the measurement quality of the NR positioning method as assistance data.

[0119] For example, regarding DL CPP, terminal 20 uses nr-TimingQuality-r16 as assistance data. nr-TimingQuality-r16 exists in each NR positioning method that uses timing values ​​and indicates the measurement quality (a value indicating the uncertainty of the timing value) measured by terminal 20. nr-TimingQuality-r16 can be a value measured (estimated) by terminal 20 or a value sent to terminal 20 from base station 10 / LMF 30. Parameters other than nr-TimingQuality-r16 may also be used.

[0120] Regarding UL CPP, the base station 10 uses, for example, measurement quality as assistance data. Measurement quality refers to the quality of measurement performed by the base station 10 (TRP), and varies depending on the type of NR positioning method, including timing measurement quality and angle measurement quality. Measurement quality can be measured (estimated) by the base station 10 or notified from the terminal 20 / LMF 30. Parameters other than measurement quality may also be used.

[0121] Next, a specific example is described. Regarding nr-TimingQuality-r16, the smaller its value, the better the quality. For example, the terminal 20 applies an NR positioning method with nr-TimingQuality-r16 equal to or less than a threshold value X to ambiguity resolution of the DL NR CPP. The terminal 20 may also apply an NR positioning method with nr-TimingQuality-r16 equal to a specific value Y to ambiguity resolution of the DL NR CPP. The terminal 20 may also apply an NR positioning method with the smallest value of nr-TimingQuality-r16 to ambiguity resolution of the DL NR CPP.

[0122] In addition, regarding measurement quality, the smaller the value, the better the quality. For example, the base station 10 applies an NR positioning method with a measurement quality below (less than) a threshold value X to resolve ambiguity in the UL NR CPP. The base station 10 may also apply an NR positioning method with a measurement quality of a specific value Y to resolve ambiguity in the UL NR CPP. The terminal 20 may also apply an NR positioning method with the smallest measurement quality value to resolve ambiguity in the UL NRCPP.

[0123] The above-mentioned values ​​X and Y may be uniquely defined in the specification, or may be set from the network / LMF 30 to the terminal 20 / base station 10.

[0124] <Option 2>

[0125] In Option 2, the terminal 20 / base station 10 uses the margin of the Timing Error Group (TEG) as assistance data. A Timing Error Group (TEG) is a group of multiple transmission or reception timing errors within a certain margin. Examples of Timing Error Groups (TEGs) include TRP Tx TEG, UE Rx TEG, UE RxTx TEG, and UE Tx TEG (Non-Patent Document 1).

[0126] The margin of the timing error group (TEG) can be obtained by, for example, TEG-TimingErrorMargin-r17 or RxTxTEG-TimingErrorMargin-r17.

[0127] TEG-TimingErrorMargin-r17 exists in each NR positioning method that uses timing values, and is defined, for example, in non-patent document 1 as "The IE TEG-TimingErrorMargin defines the timing error margin values ​​of the UE Rx TEGs, UE Tx TEGs, or TRP TxTEGs."

[0128] RxTxTEG-TimingErrorMargin-r17 exists in each NR positioning method that uses timing values, and is specified in Non-Patent Document 1 as "The IE RxTxTEG-TimingErrorMargin defines the timing error margin values ​​of the UE RxTx TEGs."

[0129] TEG-TimingErrorMargin-r17 / RxTxTEG-TimingErrorMargin-r17 can be a value measured (estimated) by terminal 20 or a value measured (estimated) by base station 10. TEG-TimingErrorMargin-r17 / RxTxTEG-TimingErrorMargin-r17 can be notified from base station 10 / LMF 30 to terminal 20 or from terminal 20 to base station 10 / LMF 30.

[0130] Parameters other than TEG-TimingErrorMargin-r17 / RxTxTEG-TimingErrorMargin-r17 can also be used as parameters representing the timing error group (TEG) margin. A specific example is described below. Hereinafter, parameters representing the timing error group (TEG) margin are collectively referred to as "timing error margin."

[0131] Here, regarding the timing error margin, the smaller the value, the better the quality. For example, the terminal 20 applies an NR positioning method with a timing error margin equal to or less than a threshold value X to resolve ambiguity in the DL NR CPP. The terminal 20 may also apply an NR positioning method with a timing error margin equal to a specific value Y to resolve ambiguity in the DL NR CPP. The terminal 20 may also apply an NR positioning method with the smallest timing error margin to resolve ambiguity in the DL NR CPP.

[0132] Furthermore, for example, the base station 10 applies an NR positioning method with a timing error margin equal to or less than a threshold value X to resolve ambiguity in the UL NR CPP. Alternatively, the base station 10 applies an NR positioning method with a timing error margin equal to a specific value Y to resolve ambiguity in the UL NR CPP. Alternatively, the base station 10 applies an NR positioning method with a minimum timing error margin to resolve ambiguity in the UL NR CPP.

[0133] The above-mentioned values ​​X and Y may be uniquely defined in the specification, or may be set from the network / LMF 30 to the terminal 20 / base station 10.

[0134] <Option 3>

[0135] In option 3, the terminal 20 / base station 10 uses priority info. (priority information) as assistance data. Priority info. is set to exist in each NR positioning method. Priority info. indicates the priority of the corresponding NR positioning method.

[0136] The priority information of each NR positioning method can be notified from the base station 10 / LMF 30 to the terminal 20. The priority information of each NR positioning method can also be notified from the LMF 30 to the base station 10.

[0137] The NR positioning method with the highest priority can be notified from the base station 10 / LMF 30 to the terminal 20. The NR positioning method with the highest priority can also be notified from the LMF 30 to the base station 10.

[0138] Figure 12 An example of information indicating the highest priority NR positioning method notified from the base station 10 / LMF 30 to the terminal 20 or from the LMF 30 to the base station 10 is shown.

[0139] For example, when the base station 10 / LMF 30 sets two or more NR positioning methods for the terminal 20, the method with the highest priority among the two or more NR positioning methods is applied to the ambiguity resolution of the DL NR CPP.

[0140] In addition, for example, when the base station 10 is set with two or more NR positioning methods by the LMF 30, the method with the highest priority among the two or more NR positioning methods is applied to the ambiguity resolution of the UL NR CPP.

[0141] (Effects of Embodiment 2)

[0142] In the technology involved in implementation mode 2, since auxiliary data is used in determining the NR positioning method, it is possible to prevent an increase in the overhead of signaling required for instructions from LMF 30 / base station 10 to terminal 20, or an increase in the overhead of signaling required for instructions from LMF 30 to base station 10.

[0143] (Implementation 3)

[0144] Next, Embodiment 3 will be described. In Embodiment 3, it is assumed that the terminal 20 requests the network for assistance data required for NR CPP ambiguity resolution. The target of the request can be the LMF 30 or the base station 10.

[0145] For example, Figure 13 As shown, the terminal 20 sends a request for assistance data for a certain NR positioning method to the base station 10 / LMF 30 in S301. Upon receiving the request, the base station 10 / LMF 30 sends assistance data for the NR positioning method to the terminal 20 in S302 as a response. The terminal 20 receives the assistance data.

[0146] For example, the terminal 20 applies the NR positioning method, which is the object of the assistance data request, to ambiguity resolution of the DL NR CPP.

[0147] Figure 14 、 Figure 15 An example of a request message for assistance data transmitted from the terminal 20 to the LMF 30 by LPP signaling (a modified example from Non-Patent Document 1) is shown. These examples show the case where DL-TDOA is applied to ambiguity resolution.

[0148] Figure 14 This example reuses the example of nr-PosCalcAssistanceRequest-r17. However, CPP-Info is added. CPP-Info includes, for example, the assumed wave number (N) range or the position information of the PRU (Positioning Reference Unit).

[0149] Figure 15 The example is an example of appending nr-PosCalcAssistanceRequest-r18. Figure 15 The CPP-Info in the

[0065] includes, for example, the assumed wave number (N) range or the position information of the PRU (Positioning Reference Unit).

[0150] In addition, the NR positioning method used by the terminal 20 as a request target for assistance data may be a single method or multiple methods (eg, DL-TDOA and DL-AoD).

[0151] In addition, when the NW (base station 10 / LMF 30) notifies the terminal 20 of auxiliary data that meets predetermined conditions regarding a certain NR positioning method, the terminal 20 may apply the NR positioning method to resolve ambiguity.

[0152] For example, the above condition is set to "PRU location information exists in CPP-Info". In this case, if PRU location information exists in CPP-Info in the auxiliary data of a certain NR positioning method, the terminal 20 can apply the NR positioning method to resolve ambiguity.

[0153] Furthermore, for example, the above condition is set to "the LOS probability in losNlosInfo is greater than or equal to Z." In this case, if the LOS probability in losNlosInfo in the auxiliary data of a certain NR positioning method is greater than or equal to Z, the terminal 20 can apply the NR positioning method to resolve ambiguity. losNlosInfo is information indicating the state of the field of view between the signal transmission point and the reception point, with "los" indicating field of view and "Nlos" indicating no field of view.

[0154] Alternatively, the above condition may be set to "the NLOS probability in losNlosInfo is less than (smaller than) Z". In this case, if the NLOS probability in losNlosInfo in the auxiliary data of a certain NR positioning method is less than (smaller than) Z, the terminal 20 can apply the NR positioning method to ambiguity resolution.

[0155] The above-mentioned value Z may be uniquely defined in the specification, or may be set from the base station 10 / LMF 30 to the terminal 20 .

[0156] The above-mentioned operation can be applied to the base station 10. The details are as follows. In addition, assistance data can also be called by other names.

[0157] The base station 10 is expected to request assistance data required for ambiguity resolution of the NR CPP from the LMF 30.

[0158] For example, the base station 10 sends a request for assistance data for a certain NR positioning method to the LMF 30. Upon receiving the request, the LMF 30 sends assistance data for the NR positioning method as a response to the base station 10. The base station 10 receives the assistance data.

[0159] For example, the base station 10 applies the NR positioning method that is the object of the assistance data request to ambiguity resolution of the UL NR CPP.

[0160] In addition, the NR positioning method that the base station 10 sets as the target of requesting auxiliary data can be set to one method (single method) or multiple methods (multiple methods).

[0161] In addition, the base station 10 may also apply the NR positioning method to ambiguity resolution when auxiliary data satisfying predetermined conditions is notified to the base station 10 from the LMF 30 regarding a certain NR positioning method.

[0162] (Technical Effects of Implementation Method 3)

[0163] According to the third embodiment, the terminal 20 / base station 10 can determine whether to use the assistance data for ambiguity resolution after receiving the assistance data, thereby ensuring the degree of freedom of operation of the terminal 20 / base station 10.

[0164] (Implementation 4)

[0165] Next, the fourth embodiment will be described. In the fourth embodiment, Figure 16 As shown in S401, the terminal 20 reports the capability (capability information) of the terminal 20 related to NR CPP ambiguity resolution to the network (base station 10 / LMF 30).

[0166] Capabilities include, for example, any one or more of the following (1) to (3).

[0167] (1) Whether NR CPP is supported

[0168] (2) Supported NR CPP mode

[0169] (3) Legacy positioning method that can be used for NR CPP ambiguity resolution

[0170] The NR CPP mode (2) mentioned above may include either or both of the following (2-1) and (2-2).

[0171] (2-1)

[0172] Non-standalone mode / standalone mode

[0173] Additionally, in non-standalone mode, legacy positioning methods are used for ambiguity resolution. Additionally, in standalone mode, legacy positioning methods are not used for ambiguity resolution.

[0174] (2-2)

[0175] ·UE-based / UE-assisted / NW-based

[0176] Furthermore, regarding (3), specifically, any one or more of the following information may also be included.

[0177] ·E-CID, DL-TDOA, Multi-RTT, DL-AoD, UL-TDOA, UL-AoA

[0178] In addition, as a variation of (3), terminal 20 may also use measurement metrics to report legacy positioning methods that can be used for NR CPP ambiguity resolution. For example, any one or more of RSRP, RSRQ, RSTD, UE-RxTxTimeDiff, and DL-AoD may be reported.

[0179] In addition, the base station 10 may also report the capabilities (capability information) of the base station 10 related to NR CPP ambiguity resolution to the LMF 30. This capability information may also be referred to as a name other than "capability". For example, the capability may include any one or more of the following (1) to (3).

[0180] (1) Whether NR CPP is supported

[0181] (2) Supported NR CPP mode

[0182] (3) Legacy positioning method that can be used for NR CPP ambiguity resolution

[0183] (Effects of Embodiment 4)

[0184] According to Embodiment 4, the base station 10 / LMF 30 can understand the CPP-related capabilities of the terminal 20. Furthermore, the LMF 30 can understand the CPP-related capabilities of the base station 10. Furthermore, appropriate NR CPP ambiguity resolution can be performed according to the capabilities of the terminal 20 / base station 10.

[0185] (Other examples)

[0186] Hereinafter, an example applicable to any of the 0th to 4th embodiments will be described.

[0187] "Signaling" can be replaced by "configure through RRC", "activate / deactivate / update through MAC-CE", "indicate through DCI", "configure through LPP", "request through NRPPa", etc.

[0188] In addition, "Carrier Phase Positioning (CPP)" can also be replaced by "Carrier Phase Measurement (CPM)", "Phase-based positioning", etc.

[0189] In addition, "ambiguity resolution" can also be replaced by "integer ambiguity resolution", "wave-number detection", etc.

[0190] (Device Structure)

[0191] Next, the functional configuration examples of the base station 10 and terminal 20 that perform the above-described processing and operations are described. The base station 10 and terminal 20 include functions for implementing all of the above-described embodiments. However, the base station 10 and terminal 20 may each include only functions for any of the above-described embodiments.

[0192] <Base Station 10>

[0193] Figure 17 1 is a diagram showing an example of the functional configuration of the base station 10. Figure 17 As shown, the base station 10 includes a transmitting unit 110 , a receiving unit 120 , a setting unit 130 , and a control unit 140 . Figure 17 The functional structure shown is only an example. As long as the operations involved in the embodiments of the present invention can be performed, the functional division and the names of the functional units can be arbitrary. In addition, the sending unit 110 and the receiving unit 120 can also be collectively referred to as the communication unit.

[0194] The transmitter 110 includes a function for generating a signal to be transmitted to the terminal 20 side and wirelessly transmitting the signal. The transmitter 110 can also transmit signals to network devices such as the LMF 30. The receiver 120 includes a function for receiving various signals transmitted from the terminal 20 and obtaining, for example, higher-layer information from the received signals. The receiver 120 can also receive signals from network devices such as the LMF 30. In addition, the transmitter 110 has a function for transmitting the NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DCI based on the PDCCH, data based on the PDSCH, etc. to the terminal 20.

[0195] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device included in the setting unit 130 , and reads the information from the storage device as needed.

[0196] The control unit 140 schedules DL reception or UL transmission of the terminal 20 via the transmission unit 110. Functional units related to signal transmission in the control unit 140 may be included in the transmission unit 110, and functional units related to signal reception in the control unit 140 may be included in the reception unit 120.

[0197] In addition, LMF 30 can also be Figure 17 The structure shown. Figure 17 In the case of the LMF configuration shown, the transmitter 110 transmits a signal to other network devices (including a base station), and the receiver 120 receives a signal from other network devices (including a base station).

[0198] <Terminal 20>

[0199] Figure 18 2 is a diagram showing an example of the functional structure of the terminal 20. Figure 18 As shown, the terminal 20 includes a transmitting unit 210 , a receiving unit 220 , a setting unit 230 , and a control unit 240 . Figure 18 The functional structure shown is only an example. As long as the operations involved in the embodiments of the present invention can be performed, the functional divisions and names of the functional units can be arbitrary. The sending unit 210 and the receiving unit 220 can also be collectively referred to as the communication unit.

[0200] The transmitting unit 210 generates a transmission signal based on the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and obtains higher-layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL / UL / SL control signals, PDCCH-based DCI, PDSCH-based data, etc., transmitted from the base station 10. Furthermore, for example, as a D2D communication, the transmitting unit 210 can transmit PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to other terminals 20, and the receiving unit 220 can receive PSCCH, PSSCH, PSDCH, or PSBCH, etc. from other terminals 20.

[0201] The setting unit 230 stores various setting information received from the base station 10 or other terminals via the receiving unit 220 in a storage device provided to the setting unit 230 and reads the information from the storage device as needed. The setting unit 230 also stores pre-set setting information.

[0202] The control unit 240 controls the terminal 20. Functional units related to signal transmission within the control unit 240 may be included in the transmitter 210, while functional units related to signal reception within the control unit 240 may be included in the receiver 220. Furthermore, the transmitter 210 may be referred to as a transmitter, and the receiver 220 may be referred to as a receiver. Phase measurement may be performed by either the receiver 220 or the control unit 240.

[0203] This specification discloses at least the matters described in the following Supplementary Notes 1 and 2.

[0204] <Note 1>

[0205] (Supplementary Note 1)

[0206] A terminal comprising:

[0207] a receiving unit that receives carrier phase positioning setting information from a network; and

[0208] The control unit assumes that, in carrier phase positioning, information indicating a positioning method used to determine the wave number is notified from the network.

[0209] (Supplementary Note 2)

[0210] The terminal according to supplementary note 1, wherein:

[0211] The receiving unit receives information about the positioning method itself or measurement metrics from the network as information indicating the positioning method.

[0212] (Supplementary Note 3)

[0213] A base station comprising:

[0214] a receiving unit that receives carrier phase positioning setting information from the management device; and

[0215] The control unit assumes that, in carrier phase positioning, information indicating a positioning method used to determine the wave number is notified from the management device.

[0216] (Supplementary Note 4)

[0217] The base station according to supplementary item 3, wherein:

[0218] The receiving unit receives information on the positioning method itself or measurement metrics from the management device as information indicating the positioning method.

[0219] (Supplementary Note 5)

[0220] A management device comprising:

[0221] a control unit that determines a positioning method for determining a wave number used in carrier phase positioning in a terminal or a base station; and

[0222] A transmitting unit that notifies the terminal or the base station of information indicating the positioning method.

[0223] (Supplementary Note 6)

[0224] A communication method, wherein a terminal performs the following processing:

[0225] It is assumed that carrier phase positioning setting information is received from a network, and information indicating a positioning method used to determine the wave number in carrier phase positioning is notified from the network.

[0226] According to any of the above configurations, it is possible to apply an appropriate positioning method to resolve ambiguity in carrier phase positioning. According to Supplementary Notes 2 and 4, information on the positioning method itself or measurement metrics can be used as information indicating the positioning method.

[0227] <Note 2>

[0228] (Supplementary Note 1)

[0229] A terminal comprising:

[0230] a receiving unit that receives carrier phase positioning setting information from a network; and

[0231] A control unit determines a positioning method used for determining a wave number in carrier phase positioning based on the assistance data or a request for the assistance data.

[0232] (Supplementary Note 2)

[0233] The terminal according to supplementary note 1, wherein:

[0234] The control section uses measurement quality, a margin of a timing error group, or a priority as the assistance data.

[0235] (Supplementary Note 3)

[0236] The terminal according to Supplementary Note 1 or 2, wherein:

[0237] When receiving assistance data satisfying a certain condition from the network, the control unit uses the positioning method corresponding to the assistance data to determine the wave number.

[0238] (Supplementary Note 4)

[0239] A base station comprising:

[0240] a receiving unit that receives carrier phase positioning setting information from the management device; and

[0241] A control unit determines a positioning method used for determining a wave number in carrier phase positioning based on the assistance data or a request for the assistance data.

[0242] (Supplementary Note 5)

[0243] A communication method, wherein a terminal performs the following processing:

[0244] The carrier phase positioning configuration information is received from the network, and in the carrier phase positioning, the positioning method used for determining the wave number is determined based on the assistance data or the request for assistance data.

[0245] (Supplementary Note 6)

[0246] A communication method, wherein a base station performs the following processing:

[0247] The configuration information of the carrier phase positioning is received from the management device, and the positioning method used for determining the wave number in the carrier phase positioning is determined based on the assistance data or the request for assistance data.

[0248] According to any of the above configurations, it is possible to apply an appropriate positioning method to resolve ambiguity in carrier phase positioning. According to Supplementary Note 2, measurement quality, timing error group margin, or priority can be used as auxiliary data. According to Supplementary Note 3, a judgment corresponding to the conditions can be made.

[0249] (Hardware Structure)

[0250] The block diagram used in the description of the above embodiment ( Figure 17 and Figure 18 ) shows blocks in functional units. These functional blocks (structural parts) are implemented by any combination of at least one of hardware and software. In addition, there is no particular limitation on the implementation method of each functional block. That is, each functional block can be implemented using one device that is physically or logically combined, or can be implemented using multiple devices by connecting two or more physically or logically separated devices directly or indirectly (for example, using wired or wireless connections). The functional blocks can also be implemented by combining software in the above-mentioned one device or the above-mentioned multiple devices.

[0251] Functions include, but are not limited to, judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, confirming, receiving, sending, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. For example, a functional block (structural unit) that performs a transmitting function is referred to as a transmitting unit or a transmitter. In short, as described above, there is no particular limitation on the implementation method.

[0252] For example, the base station 10 , the terminal 20 , and the like in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Figure 19 This figure shows an example of the hardware configuration of a base station 10, a terminal 20, and an LMF 30 according to one embodiment of the present disclosure. The base station 10 and the terminal 20 may be configured as computer devices that physically include a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, and a bus 1007.

[0253] In the following description, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the base station 10, terminal 20, and LMF 30 may include one or more of the devices shown in the figures, or may exclude some of the devices.

[0254] The various functions in the base station 10 and the terminal 20 are implemented as follows: predetermined software (programs) are read into hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls the communication of the communication device 1004 or controls at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

[0255] Processor 1001 controls the entire computer by, for example, running an operating system. Processor 1001 may also be comprised of a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, a computing device, registers, and the like. For example, control unit 140 and control unit 240 described above may also be implemented by processor 1001.

[0256] In addition, the processor 1001 reads a program (program code), software module, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and performs various processes accordingly. As a program, a program that causes a computer to perform at least a portion of the actions described in the above embodiments is used. For example, the control unit 140 of the base station 10 can also be implemented by a control program stored in the storage device 1002 and running on the processor 1001. In addition, for example, the control unit 240 of the terminal 20 can also be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Although it is described that the various processes described above are performed by one processor 1001, the various processes described above can also be performed simultaneously or sequentially by two or more processors 1001. The processor 1001 can also be implemented by one or more chips. In addition, the program can also be sent from the network via a telecommunications line.

[0257] The storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), and RAM (Random Access Memory). The storage device 1002 may also be referred to as a register, cache, or main memory (main storage device). The storage device 1002 can store executable programs (program code), software modules, and the like for implementing the communication method according to one embodiment of the present disclosure.

[0258] The auxiliary storage device 1003 is a computer-readable recording medium, and may be composed of, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a floppy disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (for example, a card, a stick, a key drive), a Floppy (registered trademark) disk, a magnetic stripe, and the like. The above-mentioned storage medium may be, for example, a database, a server, or other appropriate medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0259] Communication device 1004 is hardware (a transceiver) used to communicate between computers via at least one of a wired network and a wireless network. It is also referred to as a network device, network controller, network card, or communication module. Communication device 1004 may include, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, communication device 1004 may also implement a transceiver antenna, an amplifier, a transceiver, a transmission path interface, and the like. The transceiver may also be implemented by physically or logically separating the transmitter and receiver.

[0260] The input device 1005 is an input device that receives input from the outside (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to the outside (e.g., a display, speaker, LED light, etc.). Alternatively, the input device 1005 and the output device 1006 may be integrally formed (e.g., a touch panel).

[0261] Furthermore, the processor 1001, the storage device 1002, and other devices are connected via a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or different buses between devices.

[0262] Furthermore, the base station 10, terminal 20, and LMF 30 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), or an FPGA (Field Programmable Gate Array), and may implement some or all of the functional blocks using this hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0263] In addition, the vehicle 2001 may be equipped with the terminal 20 , the base station 10 , or the LMF 30 . Figure 20 2001 shows a structural example of a vehicle. Figure 20 As shown, 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 to 2029, an information service unit 2012, and a communication module 2013. The terminal 20, base station 10, or LMF 30 according to each form / embodiment described in this disclosure may also be applied to a communication device mounted on vehicle 2001, for example, the communication module 2013.

[0264] The driving 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 referred to as a steering wheel) and is configured to steer at least one of the front wheels and the rear wheels based on the user's operation of the steering wheel.

[0265] The electronic control unit 2010 is composed of a microprocessor 2031, a memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals from various sensors 2021 to 2029 included in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be referred to as an ECU (Electronic Control Unit).

[0266] As signals from various sensors 2021 to 2029, there are current signals from the current sensor 2021 that senses the current of the motor, speed signals of the front and rear wheels obtained by the speed sensor 2022, air pressure signals of the front and rear wheels obtained by the air pressure sensor 2023, vehicle speed signals obtained by the vehicle speed sensor 2024, acceleration signals obtained by the acceleration sensor 2025, accelerator pedal depression amount signals obtained by the accelerator pedal sensor 2029, brake pedal depression amount signals obtained by the brake pedal sensor 2026, shift lever operation signals obtained by the shift lever sensor 2027, detection signals for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028, etc.

[0267] The information service unit 2012 is composed of various devices such as a car navigation system, audio system, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and one or more ECUs that control these devices. The information service unit 2012 uses information obtained from external devices via the communication module 2013 and other means to provide various multimedia information and multimedia services to the passengers of the vehicle 2001. The information service unit 2012 may include input devices that receive input from the outside (e.g., a keyboard, mouse, microphone, switches, buttons, sensors, touch panels, etc.) and output devices that provide output to the outside (e.g., a display, speakers, LED lights, touch panels, etc.).

[0268] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents or reducing the driver's driving load, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning devices (such as GNSS), map information (such as high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyroscope systems (such as IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, and one or more ECUs that control these devices. In addition, the driving assistance system unit 2030 sends and receives various information via the communication module 2013 to implement driving assistance functions or autonomous driving functions.

[0269] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port. For example, the communication module 2013 can transmit and receive data via the communication port 2033 with 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 in the electronic control unit 2010, memory (ROM, RAM) 2032, and sensors 2021 to 2029 included in the vehicle 2001.

[0270] The communication module 2013 is controlled by the microprocessor 2031 of the electronic control unit 2010 and is a communication device capable of communicating with external devices. For example, various information can be transmitted and received with the external device via wireless communication. The communication module 2013 can be located inside or outside the electronic control unit 2010. The external device can also be, for example, a base station or a mobile station.

[0271] The communication module 2013 can transmit at least one of the signals input to the electronic control unit 2010 from the various sensors 2021-2028, information obtained based on these signals, and information based on external (user) input received 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, and the like can also be referred to as input units that receive input. For example, the PUSCH transmitted by the communication module 2013 can include information based on these inputs.

[0272] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on the information service unit 2012 included in the vehicle 2001. The information service unit 2012 can also be referred to as an output unit that outputs information (for example, outputs information to a display, speaker, or other device based on the PDSCH received by the communication module 2013 (or data / information decoded from the PDSCH)). Furthermore, the communication module 2013 stores various information received from external devices in a memory 2032 accessible to the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 can also control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, gear lever 2006, front wheels 2007, rear wheels 2008, axles 2009, and sensors 2021 to 2029 included in the vehicle 2001.

[0273] (Supplementary Implementation Methods)

[0274] The above describes the embodiments of the present invention, but the disclosed invention is not limited to such embodiments, and those skilled in the art should understand various variations, modifications, alternatives, replacements, etc. In order to facilitate the understanding of the invention, specific numerical examples are used for description, but unless otherwise specified, these numerical values ​​are only examples, and any appropriate values ​​can be used. The distinction between items in the above description is not essential to the present invention. You can combine and use the matters recorded in two or more items as needed, or you can apply the matters recorded in a certain item to the matters recorded in another item (as long as there is no contradiction). The boundaries of the functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of the physical components. The actions of multiple functional units can be performed by one physical component, or the actions of one functional unit can be performed by multiple physical components. Regarding the processing procedures described in the embodiments, the order of processing can be reversed if there is no contradiction. In order to facilitate the description of the processing, the base station 10, the terminal 20 and the LMF 30 are described using a functional block diagram, but such a device can also be implemented by hardware, software or a combination thereof. The software that operates in accordance with the embodiments of the present invention through the processor of the base station 10 and the software that operates in accordance with the embodiments of the present invention through the processor of the terminal 20 can also be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, registers, hard disk (HDD), removable disk, CD-ROM, database, server and any other appropriate storage medium.

[0275] In addition, the notification of information is not limited to the form / implementation method described in the present disclosure, and other methods may also be used. For example, the notification of information may be implemented through physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), high-layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals or a combination thereof. In addition, RRC signaling may be referred to as an RRC message, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.

[0276] Each form / embodiment described in the present disclosure can also be applied to a mobile communication system using 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)), FRA (Future Radio Access), NR (New Radio), New Radio Access (NX), Future Generation Radio Access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE At least one of 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), other appropriate systems, and next-generation systems that are expanded, modified, created, or specified based on these systems. Furthermore, a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G, etc.) may also be used.

[0277] The processing procedures, timings, and flows of each form / implementation described in this specification may be rearranged in order unless there is a conflict. For example, the methods described in this disclosure use an illustrative order to present the elements of various steps, but are not limited to the specific order presented.

[0278] In this specification, specific actions performed by base station 10 may also be performed by its upper node, depending on the situation. In a network consisting of one or more network nodes including base station 10, it is obvious that various actions performed for communication with terminal 20 can be performed by at least one of base station 10 and other network nodes other than base station 10 (e.g., MME or S-GW, but not limited to these). While the above example illustrates a single other network node other than base station 10, the other network node may also be a combination of multiple other network nodes (e.g., MME and S-GW).

[0279] The information or signals described in this disclosure can be output from a higher layer (or lower layer) to a lower layer (or higher layer), and can also be input and output via multiple network nodes.

[0280] Input or output information can be stored in a specific location (e.g., memory) or managed using a management table. Input or output information can be overwritten, updated, or appended. Output information can also be deleted. Input information can also be sent to other devices.

[0281] The determination in the present disclosure may be performed using a value represented by one bit (0 or 1), a Boolean value (Boolean: true or false), or a comparison of numerical values ​​(for example, comparison with a predetermined value).

[0282] Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, shall be interpreted broadly to refer to instructions, sets of instructions, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, etc.

[0283] Furthermore, software, commands, information, and the like may be transmitted and received via a transmission medium. For example, if software is transmitted from a web page, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and a wireless technology (infrared, microwave, etc.), at least one of these wired and wireless technologies is included within the definition of a transmission medium.

[0284] The information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc. that may be referred to in the entire description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any combination thereof.

[0285] In addition, the terms used in this disclosure and those necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of a channel and a symbol may be a signal (signaling). Furthermore, a signal may be a message. Furthermore, a component carrier (CC) may also be referred to as a carrier frequency, a cell, or a frequency carrier.

[0286] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0287] In addition, the information, parameters, etc. described in this disclosure can be expressed using absolute values, relative values ​​relative to predetermined values, or other corresponding information. For example, wireless resources can be indicated using indexes.

[0288] The names used for the above parameters are non-limiting in any respect. Furthermore, the formulas and the like using these parameters may sometimes differ from those explicitly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable names, and therefore the names assigned to these channels and information elements are non-limiting in any respect.

[0289] In this disclosure, terms such as "base station (BS)," "wireless base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," "gNodeB (gNB)," "access point," "transmission point," "reception point," "transmission / reception point," "cell," "sector," "cell group," "carrier," and "component carrier" are used interchangeably. Base stations are also sometimes referred to as macrocells, small cells, femtocells, and picocells.

[0290] A base station can accommodate one or more (for example, three) cells. When a base station accommodates multiple cells, the base station's overall coverage area can be divided into multiple smaller areas, each of which can also provide communication services through a base station subsystem (for example, a small base station for indoor use (RRH: Remote Radio Head)). Terms such as "cell" or "sector" refer to a portion or the entire coverage area of ​​at least one of the base station and base station subsystem providing communication services within that coverage area.

[0291] In the present disclosure, the base station sending information to the terminal may be replaced by the base station instructing the terminal to perform control / action based on the information.

[0292] In the present disclosure, terms such as “mobile station (MS)”, “user terminal (UE)”, and “user equipment (UE)” may be used interchangeably.

[0293] For mobile stations, those skilled in the art sometimes also use the following terms to refer to them: 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 appropriate terms.

[0294] At least one of the base station and the mobile station may also be referred to as a transmitting device, a receiving device, a communication device, etc. Furthermore, at least one of the base station and the mobile station may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to an object that can move, and the moving speed is arbitrary. Furthermore, of course, this also includes situations where the mobile body is stationary. Examples of mobile bodies include, but are not limited to, vehicles, transport vehicles, cars, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, two-wheeled trailers (rear cars), rickshaws, ships and other watercraft, airplanes, rockets, artificial satellites, Drones (registered trademark), multi-rotor helicopters, quadcopters, balloons, and objects mounted thereon. Furthermore, the mobile body may also be a mobile body that moves autonomously based on operating instructions. It may be a means of transportation (such as a car, airplane, etc.), a mobile body that moves unmanned (such as a drone, self-driving car, etc.), or a robot (manned or unmanned). Furthermore, at least one of the base station and the mobile station also includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

[0295] In addition, the base station in the present disclosure may also be replaced by a terminal. For example, a structure in which the communication between a base station and a terminal is replaced by communication between multiple terminals 20 (for example, also referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) may also apply various forms / implementations of the present disclosure. In this case, it is also possible to set a structure in which the terminal 20 has the functions possessed by the above-mentioned base station 10. In addition, terms such as "uplink" and "downlink" may also be replaced by terms corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. may also be replaced by side channels.

[0296] Likewise, the terminal in the present disclosure may be replaced by a base station. In this case, the base station may also have the functions of the terminal.

[0297] As used in this disclosure, terms such as "determining" and "determining" may sometimes encompass a variety of actions. For example, "determining" and "determining" may include considering as "judging" or "determining" any actions involving the performance of judgment, calculation, computation, processing, deriving, investigating, searching (e.g., searching a table, database, or other data structure), or ascertaining. Furthermore, "determining" and "determining" may include considering as "determining" or "determining" any actions involving receiving (e.g., receiving information), transmitting (e.g., sending information), inputting, outputting, or accessing (e.g., accessing data in a memory). Furthermore, "judgment" and "decision" can include considering matters such as resolving, selecting, choosing, establishing, and comparing as matters that have been "judged" or "determined." In other words, "judgment" and "decision" can include considering certain actions as matters that have been "judged" or "determined." Furthermore, "judgment" (decision) can be replaced with "assuming," "expecting," "considering," and the like.

[0298] The terms "connected", "coupled" and all variations of these terms are intended to indicate any direct or indirect connection or coupling between two or more elements, including situations where there is one or more intermediate elements between the two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be a physical coupling or connection, a logical coupling or connection, or a combination of these. For example, "access" may be used instead of "connection". As used in this disclosure, 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, and as some non-limiting and non-inclusive examples, electromagnetic energy having wavelengths in the wireless frequency domain, microwave region and light (including both visible and invisible) region may be used to "connect" or "couple" to each other.

[0299] The reference signal may be referred to as RS (Reference Signal) for short, or may be called a pilot signal depending on the applied standard.

[0300] The phrase “based on” used in this disclosure does not mean “based only on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”

[0301] Any reference to an element using the designations "first," "second," etc., as used in this disclosure, does not necessarily limit the number or order of these elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Therefore, reference to a first element and a second element does not imply that only two elements can be used or that the first element must precede the second element in any manner.

[0302] The “unit” in the structure of each of the above-mentioned devices may be replaced with a “section”, a “circuit”, a “device”, or the like.

[0303] When the terms "include," "including," and variations thereof are used in this disclosure, these terms, like the term "comprising," are intended to be inclusive. Furthermore, the term "or" used in this disclosure does not mean an exclusive or.

[0304] A radio frame can be composed of one or more frames in the time domain. In the time domain, one or more frames can be called a subframe. A subframe can also be composed of one or more time slots in the time domain. A subframe can be a fixed time length (e.g., 1 ms) that is independent of the numerology.

[0305] A parameter set may be a communication parameter applied to at least one of the transmission and reception of a signal or channel. For example, the parameter set may represent 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, specific filtering performed by the transceiver in the frequency domain, specific windowing performed by the transceiver in the time domain, and the like.

[0306] A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a time unit based on a parameter set.

[0307] A time slot may contain multiple mini-slots. Each mini-slot may consist of one or more symbols in the time domain. Furthermore, a mini-slot may also be referred to as a sub-slot. A mini-slot may consist of fewer symbols than a time slot. A PDSCH (or PUSCH) transmitted in time units larger than a mini-slot may be referred to as PDSCH (or PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a mini-slot may be referred to as PDSCH (or PUSCH) mapping type B.

[0308] Radio frame, subframe, time slot, mini-time slot, and symbol all represent time units for signal transmission. Radio frame, subframe, time slot, mini-time slot, and symbol may be referred to by other corresponding names.

[0309] For example, one subframe can be called a Transmission Time Interval (TTI), multiple consecutive subframes can also be called a TTI, and one time slot or one mini time slot can also be called a TTI. That is, at least one of the subframe and the TTI can be a subframe (1ms) in existing LTE, or a period shorter than 1ms (for example, 1-13 code elements), or a period longer than 1ms. In addition, the unit representing the TTI can be called a time slot, a mini time slot, etc. instead of a subframe. In addition, one time slot can also be called a unit time. The unit time can be different for each cell according to the parameter set.

[0310] Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communications. For example, in the LTE system, a base station schedules the allocation of wireless resources (such as the frequency bandwidth and transmit power available to each terminal 20) to each terminal 20 using TTIs as units. The definition of TTI is not limited to this.

[0311] A TTI can be a unit of time for transmitting data packets (transport blocks), code blocks, code words, etc. after channel coding, or a unit of processing such as scheduling and link adaptation. Furthermore, when a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, code block, code word, etc. is actually mapped can be shorter than the TTI.

[0312] In addition, when one time slot or one mini-time slot is called a TTI, one or more TTIs (i.e., one or more time slots or one or more mini-time slots) can be the minimum time unit for scheduling. In addition, the number of time slots (mini-time slots) that constitute the minimum time unit for scheduling can be controlled.

[0313] A TTI with a time length of 1 ms may also be referred to as a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a time slot, etc. A TTI shorter than a normal TTI may also be referred to as a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a time slot, etc.

[0314] In addition, for long TTI (for example, normal TTI, subframe, etc.), it can be replaced with a TTI with a time length of more than 1ms, and for short TTI (for example, shortened TTI, etc.), it can be replaced with a TTI with a TTI length smaller than long TTI (longTTI) and greater than 1ms.

[0315] A resource block (RB) is a unit of resource allocation in the time and frequency domains. In the frequency domain, it can contain one or more contiguous subcarriers. The number of subcarriers contained in an RB can be the same regardless of the parameter set, for example, it can be 12. The number of subcarriers contained in an RB can also be determined based on the parameter set.

[0316] In addition, the time domain of an RB may include one or more symbols and may be the length of one slot, one mini-slot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0317] In addition, one or more RBs may also be referred to as a physical resource block (PRB: Physical RB), a sub-carrier group (SCG: Sub-Carrier Group), a resource element group (REG: Resource Element Group), a PRB pair, an RB pair, etc.

[0318] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0319] A bandwidth part (BWP) (also referred to as a fractional bandwidth) can also represent a subset of contiguous common resource blocks (RBs) used for a particular parameter set within a carrier. Common RBs can be identified by their index relative to the common reference point for that carrier. PRBs can be defined within a BWP and numbered within that BWP.

[0320] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be configured for a UE within one carrier.

[0321] At least one of the configured BWPs may be active, and the UE may not assume that it will transmit or receive predetermined signals / channels outside of the activated BWP. In addition, "cell", "carrier", etc. in this disclosure may be replaced with "BWP".

[0322] The above-described structures of radio frames, subframes, slots, mini-slots, and symbols are merely examples. For example, various modifications may be made to the structures, such as the number of subframes in a radio frame, the number of slots per subframe or radio frame, the number of mini-slots within a slot, the number of symbols and RBs within a slot or mini-slot, the number of subcarriers within an RB, the number of symbols within a TTI, the symbol length, and the cyclic prefix (CP) length.

[0323] In the present disclosure, when an article is added by translation, such as a, an, and the in English, the present disclosure also includes cases where the noun following the article is in a plural form.

[0324] In the present disclosure, the phrase "A and B are different" can mean "A and B are different from each other." Alternatively, the phrase can mean "A and B are each different from C." Terms such as "separate" and "coupled" can also be interpreted in the same way as "different."

[0325] Each form / implementation described in this disclosure may be used individually or in combination, and may be switched between them depending on the execution. Furthermore, notification of predetermined information (e.g., notification of "yes X") is not limited to being performed explicitly, but may also be performed implicitly (e.g., not notifying the predetermined information).

[0326] While the present disclosure has been described in detail above, it should be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in various modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is for illustrative purposes only and does not have any limiting meaning on the present disclosure.

[0327] Label Description

[0328] 10: Base Station

[0329] 110: Sending Department

[0330] 120: Receiving Department

[0331] 130: Setting Department

[0332] 140: Control Department

[0333] 20: Terminal

[0334] 210: Sending Department

[0335] 220: Receiving Department

[0336] 230: Setting Department

[0337] 240: Control Department

[0338] 30:LMF

[0339] 1001: Processor

[0340] 1002: Storage device

[0341] 1003: Auxiliary storage device

[0342] 1004: Communication device

[0343] 1005: Input device

[0344] 1006: Output device

[0345] 2001: Vehicles

[0346] 2002: Drive Department

[0347] 2003: Steering

[0348] 2004: Accelerator pedal

[0349] 2005: Brake pedal

[0350] 2006: Gear Shifter

[0351] 2007: Front wheel

[0352] 2008: Rear wheel

[0353] 2009: Axles

[0354] 2010: Electronic Control Department

[0355] 2012: Information Services Department

[0356] 2013: Communication Module

[0357] 2021: Current Sensors

[0358] 2022: Speed ​​Sensor

[0359] 2023: Air pressure sensor

[0360] 2024: Vehicle speed sensor

[0361] 2025: Accelerometers

[0362] 2026: Brake pedal sensor

[0363] 2027: Gearshift sensor

[0364] 2028: Object detection sensors

[0365] 2029: Accelerator pedal sensor

[0366] 2030: Driving Assistance Systems Division

[0367] 2031: Microprocessor

[0368] 2032: Memory (ROM, RAM)

[0369] 2033: Communication port (IO port)

Claims

1. A terminal comprising: a receiving unit that receives carrier phase positioning setting information from a network; and The control unit assumes that, in carrier phase positioning, information indicating a positioning method used to determine the wave number is notified from the network.

2. The terminal according to claim 1, wherein The receiving unit receives information about the positioning method itself or measurement metrics from the network as information indicating the positioning method.

3. A base station comprising: a receiving unit that receives carrier phase positioning setting information from the management device; and The control unit assumes that, in carrier phase positioning, information indicating a positioning method used to determine the wave number is notified from the management device. The base station according to claim 3 , wherein: The receiving unit receives information on the positioning method itself or measurement metrics from the management device as information indicating the positioning method.

5. A management device comprising: a control unit that determines a positioning method for determining a wave number used in carrier phase positioning in a terminal or a base station; and A transmitting unit that notifies the terminal or the base station of information indicating the positioning method.

6. A communication method, wherein a terminal performs the following processing: It is assumed that carrier phase positioning setting information is received from a network, and information indicating a positioning method used to determine the wave number in carrier phase positioning is notified from the network.

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