Terminal and reporting method

Abstract

This terminal comprises: a control unit that acquires a plurality of pieces of terminal position-related information by using a plurality of reference points related to a non-terrestrial network; and a transmission unit that reports the plurality of pieces of terminal position-related information to a base station.

Description

[Technical Field]

[0001] The present invention relates to a terminal and a reporting method in a wireless communication system. [Background technology]

[0002] The 3GPP (3rd Generation Partnership Project) is currently studying a wireless communication system called 5G or NR (New Radio) (hereinafter, this wireless communication system will be referred to as "NR") in order to achieve a larger system capacity, a higher data transmission speed, and a lower latency in wireless sections. In 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 the latency in wireless sections to 1 ms or less (for example, Non-Patent Document 1).

[0003] Currently, NTN (Non-Terrestrial Network) is being considered, which uses non-terrestrial networks such as satellites to provide services to areas that cannot be covered by terrestrial networks, mainly due to cost. [Prior art documents] [Non-patent literature]

[0004] [Non-Patent Document 1] 3GPP TS 38.300 V16.6.0(2021-06) Summary of the Invention [Problem to be solved by the invention]

[0005] It is important for the NTN network side (network side) to know the location of a terminal. However, when location information obtained from a terminal is used in the network, there is a possibility that the reliability of that location information is not high. Therefore, for example, it is desirable for the network to be able to verify whether the location information obtained from a terminal is reliable based on some information related to the terminal's location.

[0006] However, in the conventional technology, it is not clear what information a terminal should report to a network in order for the network to grasp the location of the terminal.

[0007] The present invention has been made in view of the above points, and has an object to provide a technique for a terminal to report appropriate terminal location-related information to a network. [Means for solving the problem]

[0008] According to the disclosed technology, a control unit that acquires a plurality of pieces of terminal location related information using a plurality of reference points related to a non-terrestrial network; a transmitter that reports the plurality of pieces of terminal location related information to a base station; A terminal, The plurality of pieces of terminal location-related information include at least one of a timing advance value between a reference point and the terminal and a distance between the reference point and the terminal. A terminal is provided. [Effects of the Invention]

[0009] The disclosed technology provides a technology for a terminal to report appropriate terminal location-related information to a network. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a first diagram for explaining a non-terrestrial network. [Figure 2] FIG. 2 is a second diagram for explaining a non-terrestrial network. [Figure 3] FIG. 10 is a third diagram for explaining a non-terrestrial network. [Figure 4]FIG. 4 is a fourth diagram for explaining a non-terrestrial network. [Figure 5] FIG. 10 is a diagram for explaining timing advance. [Figure 6] FIG. 10 is a diagram for explaining an example of calculating a timing advance. [Figure 7] FIG. 1 is a diagram illustrating a basic processing flow according to an embodiment of the present invention. [Figure 8] FIG. 10 is a diagram showing an example of a reference point (RP). [Figure 9] FIG. 10 is a diagram showing an example of a reference point (RP). [Figure 10] FIG. 10 is a diagram showing an example in which a plurality of values ​​are calculated using a plurality of reference points (RP). [Figure 11] FIG. 10 is a diagram for explaining a third embodiment. [Figure 12] FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to an embodiment of the present invention. [Figure 13] FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention. [Figure 14] FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to an embodiment of the present invention. [Figure 15] 1 is a diagram showing an example of a configuration of a vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0012] In operation of the wireless communication system according to the embodiment of the present invention, an existing technology may be used as appropriate, such as the existing NR or LTE, but is not limited to the existing NR or LTE.

[0013] Furthermore, in the embodiments of the present invention described below, terms used in existing LTE, such as SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel), may be used. This is for convenience of description, and similar signals, functions, etc. may be referred to by other names. Furthermore, the above-mentioned terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even signals used in NR are not necessarily designated as "NR-".

[0014] Furthermore, in the embodiments of the present invention, the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or other methods (for example, Flexible Duplex, etc.).

[0015] Furthermore, in the embodiments of the present invention, "configuring" radio parameters and the like may mean that predetermined values ​​are pre-configured, or that radio parameters notified from a base station or a terminal are set.

[0016] (For non-terrestrial networks) FIG. 1 is the first diagram for explaining a non-terrestrial network. A non-terrestrial network (NTN) uses non-terrestrial devices such as satellites to provide services to areas that cannot be covered by terrestrial networks, mainly due to cost. NTNs can also provide more reliable services. For example, they are expected to be applied to IoT (Internet of Things), ships, buses, trains, and critical communications. NTNs also have scalability through efficient multicast or broadcast.

[0017] As an example of an NTN, as shown in FIG. 1, a satellite 10A can retransmit signals transmitted from a terrestrial base station 10B to provide service to areas where no terrestrial base stations are located, such as mountainous regions.

[0018] Note that the terrestrial network (for example, a terrestrial 5G network) may have the following configuration. The terrestrial network includes one or more base stations 10 and terminals 20. The base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminals 20. The physical resources of a 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 base station 10 transmits a synchronization signal and system information to the terminals 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, on NR-PBCH, and is also called broadcast information.

[0019] The base station 10 transmits control signals or data to the terminal 20 via DL (Downlink) and receives control signals or data from the terminal 20 via UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. Furthermore, both the base station 10 and the terminal 20 are capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both the base station 10 and the terminal 20 may communicate via an SCell (Secondary Cell) and a PCell (Primary Cell) using CA (Carrier Aggregation).

[0020] 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, an M2M (Machine-to-Machine) communication module, etc. The terminal 20 receives control signals or data from the base station 10 via DL and transmits control signals or data to the base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system.

[0021] FIG. 2 is a second diagram for explaining a non-terrestrial network. The area of ​​each cell or beam in an NTN is much larger than that of a terrestrial network (TN). FIG. 2 shows an example of an NTN configured with retransmission by satellite. The connection between the satellite 10A and the NTN gateway 10B is called a feeder link, and the connection between the satellite 10A and the UE 20 is called a service link.

[0022] As shown in Figure 2, the difference in delay between UE 20A on the near side and UE 20B on the far side is, for example, 10.3 ms in the case of GEO (Geosynchronous orbit) and 3.2 ms in the case of LEO (Low Earth orbit). The beam size in NTN is, for example, 3,500 km in the case of GEO and 1,000 km in the case of LEO. The area formed on the ground by the beams of a satellite or aircraft in NTN may also be called a "service area," "beam area," or "cell."

[0023] FIG. 3 is a third diagram for explaining a non-terrestrial network. As shown in FIG. 3, the NTN is realized by a satellite in space or a flying object in the air. For example, a GEO satellite may be a satellite located at an altitude of 35,786 km and having a geostationary orbit. For example, a LEO satellite may be a satellite located at an altitude of 500-2000 km and orbiting every 88-127 minutes. For example, a HAPS (High Altitude Platform Station) may be a flying object located at an altitude of 8-50 km and performing circular flight, or may be a flying object performing a separate flight.

[0024] As shown in Figure 3, GEO satellites, LEO satellites, and HAPS aircraft may be connected to ground stations (gNBs) via gateways. The service areas may be larger in the order of HAPS, LEO, and GEO.

[0025] For example, NTN can extend the coverage of a 5G network to unserved or served areas. Furthermore, NTN can improve the continuity, availability, and reliability of services on ships, buses, trains, or other critical communications. The NTN may be signaled by transmitting dedicated parameters to the terminal 20, and the dedicated parameters may be parameters related to determining a timing advance (TA) based on information related to a satellite or an aircraft.

[0026] FIG. 4 is a fourth diagram for explaining a non-terrestrial network. FIG. 4 shows an example of an NTN network architecture assumed for a transparent payload. As shown in FIG. 4, a CN (Core Network) 10D, a gNB 10C, and a gateway 10B are connected. Note that the gNB is an example of a base station. The gateway 10B is connected to a satellite 10A via a feeder link. The satellite 10A is connected to a terminal 20A or a VSAT (Very Small Aperture Terminal) 20B via a service link. An NR Uu is established between the gNB 10C and the terminal 20A or the VSAT 20B.

[0027] Furthermore, NTN's network architecture may be assumed to employ FDD or to be capable of TDD. Terrestrial cells may be fixed or mobile. Terminal 20 may have GNSS (Global Navigation Satellite System) capability. In this embodiment, terminal 20 has GNSS capability. For example, terminal 20 may be assumed to be a power class 3 handheld device in FR1. Furthermore, terminal 20 may be assumed to be a VSAT device at least in FR2.

[0028] NTN's network architecture may also assume regenerative payloads. For example, gNB (base station) functionality may be mounted on a satellite or air vehicle. Alternatively, a gNB-DU may be mounted on a satellite or air vehicle, and a gNB-CU may be deployed as a ground station.

[0029] In the following description, the object in the air (relay device) will be described as a satellite 10A. However, this is an example, and as mentioned above, the object in the air may be a flying vehicle other than the satellite 10A.

[0030] Furthermore, hereinafter, the terrestrial base station 10C and the gateway 10B are collectively referred to as the base station 10. Furthermore, when there is no need to distinguish between the terminal 20A and the VSAT 20B, they are collectively referred to as the terminal 20. Furthermore, the terrestrial base station 10C or a base station mounted on a satellite may be referred to as the base station 10. Furthermore, in the following description, it is assumed that the NW in cases such as "receive from NW (network)" and "report to NW" is the base station 10. In other words, the NW in the following description may be replaced with the base station 10. However, the NW is not limited to the base station 10.

[0031] (About TA control) As will be described later, in this embodiment, there is an option for the terminal 20 to report the TA value to the NW, so the TA will be explained here.

[0032] The TA (Timing Advance) control is a control for uplink (UL) transmission of the terminal 20, and is a control for a certain time (T) relative to the downlink (DL) frame. TA ) is the control to shift the UL frame by

[0033] More specifically, if TA control is not performed, the timing of UL signals received from the multiple terminals 20 at the base station 10 will not be aligned due to differences in propagation delay between the base station 10 and the multiple terminals 20. Therefore, TA control is performed so that the reception timing at the base station 10 is aligned for transmissions from each terminal 20.

[0034] A specific example will be described with reference to Figure 5. In Figure 5, for ease of explanation, one square is assumed to represent one slot, and slot n is shown shaded. Also, for ease of explanation, it is assumed that the RTT (Round Trip Time) between the base station 10 and the terminal 20 is two slots. (a) and (b) show that the DL transmission signal from the base station 10 in slot n arrives at the terminal 20 with a delay of one slot. As shown in (c) and (d), the terminal 20 performs UL transmission ahead of the DL reception timing by the RTT, so that the base station 10 receives the UL transmission from the terminal 20 at the timing of its own slot n. By each terminal 20 performing such control, the base station 10 can receive UL signals from multiple terminals 20 at synchronized timing.

[0035] (About TA at NTN) In the TA control in the NTN, the terminal 20 transmits the uplink frame i corresponding to the downlink frame i at a timing T 1000 from the start timing of the downlink frame i. TA In this embodiment, the transmission time is T TA is sometimes called "TA". TA may also be called the timing adjustment value. TA , N TA,UE-common , N TA,common Each of these may be called a TA or a timing adjustment value. The terminal 20 transmits a signal at a timing based on the signal reception timing and the timing adjustment value.

[0036] In the NTN according to this embodiment, the TA (Full TA) is as follows:

[0037] Full TA = TA on feeder link + TA on service link The TA in the feeder link is a value corresponding to the round trip delay (RTT) in the feeder link, and is 2(T0+T2) as shown in FIG.

[0038] As shown in Figure 6, T2 is a value that is transparent to the UE and is compensated by the network. To simplify gNB implementation, T2 may be a constant. T0 may be a value that is common to all UEs and may be a value that can be broadcast to terminal 20, for example, in an SIB. Note that the reference point (which may also be referred to as a reference point, RP, etc.) may be located on the service link, in which case T0 is a negative value.

[0039] The TA on the service link is a value corresponding to the round trip delay (RTT) on the service link, and is 2T1, where T1 is a user-specific value that varies depending on the location of the UE.

[0040] Basically, the terminal 20 calculates its own T from the common TA (2T0) and the UE-specific TA (2T1) estimated (calculated) by the terminal 20 itself, for example, using the following formula: TA The following formula is the T assumed in NTN of Rel-17. TA This is the calculation formula.

[0041] T TA =(N TA +N TA,UE-specific +N TA,common +N TA,offset )×T c The above T c is a predetermined time length. TA Regarding N, it is 0 at the time of PRACH transmission, is updated by the TA command of RAR, and then is updated by the TA command MAC CE. TA =T A 16 64 / 2 μ and T A (=0,1,2,...,3846) is the value signaled by the 12-bit TAC field in the RAR. TA_new =N TA,old +(T A -31)·16·64 / 2 μ and T A(=0, 1, 2, ..., 63) is notified by the 6-bit TAC field in the TA command MAC CE.

[0042] N TA,UE-specific is the TA estimated by the UE itself to compensate for the service link delay. TA,common is the common TA controlled by the network, and includes any timing offset required by the network. TA,common may be assumed to have a value of 0 (i.e., it may be assumed that the UL frame and the DL frame are aligned on the satellite 10A). TA,offset is a fixed offset value used to calculate TA.

[0043] In addition, N TA,common is an example of a common timing adjustment value based on the delay occurring between the satellite 10A and the base station 10 in a non-terrestrial network.

[0044] (Issue, proposal summary) In NTN, it is important for the network side (base station 10, etc.) to know the location of the terminal 20. For example, the base station 10 can estimate the propagation delay to the terminal 20 based on the location of the terminal 20, and can perform appropriate transmission and reception control.

[0045] However, when the location information acquired from the terminal 20 is used in the NW, there is a possibility that the location information is not highly reliable. Therefore, for example, it is desirable that the base station 10 be able to estimate the location of the terminal 20 based on some information related to the location of the terminal 20 and verify whether the terminal location information acquired from the terminal 20 is reliable. In addition, it is desirable that the terminal location information itself transmitted from the terminal 20 is confidential (hard to be forged).

[0046] However, in the prior art, it is not clear what information a terminal 20 connected to an NTN should report to the NW in order to allow the NW to grasp the location of the terminal 20. Specifically, for example, the following points are not clear:

[0047] What information does the terminal 20 report to the network as information related to the location of the terminal 20?

[0048] What signaling does the terminal 20 use to report information to the network?

[0049] What triggers the terminal 20 to report information to the network?

[0050] In this embodiment, it is assumed that the information reported by the terminal 20 to the network (hereinafter referred to as location-related information or terminal location-related information) is information based on location information acquired by the terminal 20 using its own GNSS function (GPS, etc.). For example, the location-related information is, in Rel-17 NTN, a UE-specific TA (N TA,UE-specific However, this is not limited to information based on location information acquired by the GNSS function of the device itself, and may be applied when location information is acquired by other methods.

[0051] (Basic operation example) An example of a basic operation in this embodiment will be described with reference to Fig. 7. In S100, setting information or a report instruction is transmitted from the base station 10 to the terminal 20. This setting information is, for example, setting information that specifies what kind of location-related information the terminal 20 should report. The report instruction may also be a trigger for the terminal 20 to acquire and report the location-related information.

[0052] In S101, the terminal 20 acquires location-related information. In S102, the terminal 20 reports the location-related information to the base station 10. Details of the content of the location-related information, the reporting method, etc. will be explained in the following examples.

[0053] (Outline of the embodiment) In this embodiment, Examples 0 to 3 will be described as examples of location-related information that terminal 20 reports to base station 10. Also, Example 4 will be described as an example that can be applied to Examples 0 to 3. The outline of Examples 0 to 3 is as follows. In the following description, "A / B" means A or B, or A and B.

[0054] Example 0: The terminal 20 reports one TA value to the NW.

[0055] Example 1: The terminal 20 reports to the NW a plurality of (N) values ​​of TA / RTT / one-way propagation delay / distance between the terminal 20 and a reference point.

[0056] Example 2: The terminal 20 reports its location information directly to the NW.

[0057] Third Embodiment: The terminal 20 reports to the network multiple (N) values ​​of the difference in "TA / RTT / one-way propagation delay / distance" between the position of the terminal 20 acquired by GNSS and two reference points. Each embodiment will be described below. Note that any of the following embodiments 0 to 4 (Example 0) First, Example 0 will be described. In Example 0, the terminal 20 reports, for example, one TA value to the NW as location-related information. For example, the TA value may be a UE-specific TA value in Rel-17. The base station 10 can determine the distance between the base station 10 and the terminal 20 or the distance between the satellite 10A and the terminal 20 from the TA value received from the terminal 20, and can therefore estimate the approximate location of the terminal 20.

[0058] The value reported by the terminal 20 is, for example, the full TA, i.e., "T TA =(N TA +N TA,UE-specific +N TA,common +N TA,offset )×T c " or may be a UE-specific TA as described above. The UE-specific TA is N TA,UE-specific or N TA,UE-specific ×T cmay be.

[0059] Furthermore, the granularity of the values ​​reported by terminal 20 may be slots, symbols, multiple slots, multiple symbols, Tc, multiple Tc, subframes, multiple subframes, ms, or multiple ms. Note that ms stands for milliseconds. Furthermore, in this specification, "granularity" may be rephrased as "unit."

[0060] Furthermore, the terminal 20 may transmit one TA value to the NW by MAC CE, by RRC, or by PHY (as UCI).

[0061] The triggers for the terminal 20 to report the TA value include, for example, the following Alt (Alternative) 1 to 5. That is, when the terminal 20 determines that at least one of the following five conditions of Alt 1 to 5 is satisfied, it uses this as a trigger to report the TA value to the base station 10. Note that any two or more of Alt 1 to 5 may be combined.

[0062] Alt1: The TA value is reported in the RACH procedure (Random Access Procedure). The terminal 20 acquires the TA value and reports it, triggered by the start of the RACH procedure. The terminal 20 reports the TA value by including it in MSG3 or MSGA (i.e., PUSCH transmission in the RACH procedure).

[0063] Alt2: A timer (periodic timer) is set from the NW to the terminal 20. For example, the timer is reset to an initial value and started when the terminal 20 reports the TA value. When the timer expires, the terminal 20 reports the TA value, triggered by the expiration of the timer. In this specification, "setting" may refer to something that is set from the NW to the terminal 20 as described above, or something that is set in advance in the terminal 20.

[0064] Alt3: A threshold value is set from the NW to the terminal 20. When the terminal 20 detects that the current TA / UE-specific TA value has changed by more than the threshold value compared to the value (TA / UE-specific TA value) of the last (most recent) successful report, the detection triggers the terminal 20 to report the TA value.

[0065] Alt4: The terminal 20 makes a report using the signaling of the setting / instruction received from the NW as a trigger.

[0066] Alt5: When transmitting uplink data, if there are available PUSCH resources for data transmission, terminal 20 may report the TA value using the available resources.

[0067] Note that Example 0 may be performed when Rel-18 RRC parameters (e.g., parameters for NW-verified UE location) are provided. If the parameters are not provided, the NTN mechanism of Rel-17 may be applied. The details of reporting one TA value for NW-verified UE location in Rel-18 may differ from the details of reporting in Rel-17 NTN.

[0068] In addition, in Example 0, the reported value is one TA value, but this is an example. In Example 0, the terminal 20 may report one "RTT between the terminal 20 and the reference point", one "one-way propagation delay between the terminal 20 and the reference point", or one "distance between the terminal 20 and the reference point" to the NW. As for the reference point, the reference point described in Example 1, etc., which will be described later, may be used.

[0069] According to the embodiment 0, the terminal 20 reports location-related information such as the TA value to the NW, so that the range of the location of the terminal 20 can be estimated in the NW.

[0070] (Analysis of Example 0) When the purpose of the network (base station 10, etc.) is to verify the location of terminal 20, reporting only a single TA value, as in Example 0, may be insufficient to verify the location of terminal 20, since base station 10 can only determine the general range of terminal 20.

[0071] To calculate a more specific position (more accurate position) of the terminal 20, further parameters are required in addition to the TA value.

[0072] For example, as shown in Fig. 8, it is possible to report multiple TAs using multiple reference points. For example, in the example of Fig. 8, if the positions of RP1 to RP4 are known in the NW, terminal 20 can report to the NW, for example, the distance between terminal 20 and RP1, the distance between terminal 20 and RP2, the distance between terminal 20 and RP3, and the distance between terminal 20 and RP4, thereby allowing the NW to accurately estimate the position of terminal 20. Next, a first embodiment from this perspective will be described.

[0073] Example 1 In the first embodiment, the terminal 20 reports to the network, as location-related information, multiple (N) values ​​of "TA / RTT / one-way propagation delay / distance" between the terminal 20 and the reference point. The number of values ​​N will be explained in the following embodiment 1-1. The reference point will be explained in the following embodiment 1-2.

[0074] Each reported value may be, for example, one of Alt1 to Alt4 below.

[0075] Alt1: The TA between the position of the terminal 20 and the reference point. In this case, the Rel-17UE-specific TA with the satellite 10A as the reference point can be used as one of the multiple values. For example, the terminal 20 can find the distance between its own position acquired by GNSS and the position of the reference point, and calculate the TA from the distance.

[0076] Alt2: RTT between the position of the terminal 20 and the reference point. For example, the terminal 20 can calculate the RTT from its own position acquired by GNSS and the position of the reference point.

[0077] Alt3: One-way propagation delay between the position of the terminal 20 and the reference point. For example, the terminal 20 can calculate the one-way propagation delay from its own position acquired by GNSS and the position of the reference point.

[0078] Alt4: The distance between the position of the terminal 20 and the reference point. For example, the terminal 20 can calculate the distance from its own position acquired by GNSS and the position of the reference point.

[0079] The number of values ​​to be reported, N, may be values ​​in the same Alt or values ​​in multiple different Alts. For example, when reporting three values, terminal 20 may report three TAs calculated using three reference points, or may report TAs, RTTs, and distances for the same reference point or multiple different reference points.

[0080] Furthermore, terminal 20 may calculate / determine each of the N values ​​based on its relationship with a different satellite. For example, terminal 20 may calculate value #0 using satellite #0 and value #1 using satellite #1. The same applies to values ​​#3 and onward. Note that "satellite" may be replaced with "reference point."

[0081] Regarding TA / RTT / delay, the granularity of the reported value may be any of slot / symbol / multiple slots / multiple symbols / Tc / multiple Tc / subframe / multiple subframes / ms / multiple ms. Regarding distance, the granularity may be any of m / cm / multiple m / multiple cm / etc.

[0082] Example 1: Reporting Method The terminal 20 may transmit the report value by any of MAC CE, RRC, and PHY (as UCI). More specifically, there are the following Alt1 and Alt2.

[0083] Alt1: The terminal 20 includes all of the multiple values ​​in the same MAC CE / RRC signaling / PHY signaling. For example, in a case where three values ​​are to be reported, assuming that MAC CE is used, the terminal 20 includes the three values ​​in the MAC CE and reports them.

[0084] Alt2: Terminal 20 may divide the multiple values ​​into any of MAC CE / RRC signaling / PHY signaling. For example, in the case of reporting three values, terminal 20 may report value 1 in MAC CE, value 2 in RRC, and value 3 in UCI.

[0085] Example 1: Reporting Triggers The triggers for the terminal 20 to report a value include, for example, the following Alt1 to 5. That is, when the terminal 20 determines that at least one of the following five conditions Alt1 to 5 is satisfied, it uses this as a trigger to report a value to the base station 10. Note that any two or more of Alt1 to 5 may be combined.

[0086] Alt1: The value is reported in the RACH procedure (Random Access Procedure). The terminal 20 obtains the value to be reported and reports it, triggered by the start of the RACH procedure. The terminal 20 reports the value by including it in MSG3 or MSGA.

[0087] Alt2: A timer (periodic timer) is set from the NW to the terminal 20. For example, the timer is reset to an initial value and started when the terminal 20 reports a value. When the timer expires, the terminal 20 reports the value using the expiration as a trigger.

[0088] Alt3: A threshold is set from the NW to the terminal 20. When the terminal 20 detects that the current value has changed by more than the threshold compared to the value reported in the last (most recent) successful report, the terminal 20 reports the value using this detection as a trigger. When all multiple values ​​are included in the same MAC CE / RRC / PHY, the following may be applied.

[0089] Alt3-1: The terminal 20 triggers a report if any one of the values ​​changes more than a threshold value.

[0090] Alt3-2: The terminal 20 triggers a report when all of the plurality of values ​​(each of the plurality of values) change by more than a threshold value.

[0091] Alt3-3: The terminal 20 triggers a report if some, but not all, of the values ​​change by more than a threshold value.

[0092] Alt4: The terminal 20 makes a report using the signaling of the setting / instruction received from the NW as a trigger.

[0093] Alt5: When transmitting uplink data, if there are available PUSCH resources for data transmission, terminal 20 may report the value using the available resources.

[0094] (Example 1-1) In Example 1-1, an example of a method for determining N will be described.

[0095] According to the principles of satellite positioning, at least three reference points are required to determine a specific position. Here, we will explain the case where the receiver's clock offset (clock error) is taken into account.

[0096] Clock offset is a signal propagation time measurement error caused by an unstable receiver clock. Clock offset can directly affect positioning accuracy. For example, if the time offset between the satellite clock and the receiver clock is 1 μs, the range observation error can be 300 m.

[0097] To eliminate the effects of clock offset, at least four reference points are required, as shown in the equation below.

[0098] [(x1-x) 2 +(y1-y) 2 +(z1-z) 2 ] 1 / 2 +c(V t1 -V t0 )=d1 [(x2-x) 2 +(y2-y) 2 +(z2-z) 2 ] 1 / 2 +c(V t2 -V t0 )=d2 [(x3-x) 2 +(y3-y) 2 +(z3-z) 2 ] 1 / 2 +c(V t3 -V t0 )=d3 [(x4-x) 2 +(y4-y) 2 +(z4-z) 2 ] 1 / 2 +c(V t4 -V t0 )=d4 In the above equation, x, y, and z are the coordinates of the terminal 20, and V t0 is the clock offset of the terminal 20, and these are unknown parameters. i is the distance between the terminal 20 and the reference point, and x i , y i , z i are the known coordinates of the reference point (space rectangular coordinates). tiis the clock offset of the satellite clock, transmitted by the satellite ephemeris.

[0099] The number of reported values ​​N is N=3 (the value in an ideal case where there is no clock offset) or N=4 (a value that takes the clock offset into consideration). Note that N=3 or 4 is just an example, and values ​​other than N=3 or 4 may also be used. For example, N may be 2, 5, or a value of 6 or more.

[0100] The number N of reported values ​​may be predefined / fixed by specifications, may be set / instructed by the NW to the terminal 20, may be reported from the terminal 20 to the NW as a UE capability, or may be determined based on given conditions (e.g., how many satellites the terminal 20 is tracking).

[0101] (Example 1-2) The terminal 20 determines a different reference point for each reported value in the first embodiment. Note that one reference point may be used for multiple reported values. Also, the reference point is a point related to the NTN (for example, a satellite), but the reference point is not limited to a point related to the NTN. Methods for the terminal 20 to determine the reference point include Alt1 to Alt6 below. Note that the "satellite" may also be an "aircraft."

[0102] Alt1: The terminal 20 determines the satellite as a reference point. The position of the satellite can be acquired from information broadcast from the NW (for example, satellite ephemeris).

[0103] Alt2: The terminal 20 determines the satellite nadir point as a reference point. The position of the satellite nadir point can be calculated from information broadcast from the NW (for example, satellite ephemeris).

[0104] The nadir point is the point where the line connecting the center of the Earth and the satellite intersects with the Earth's surface. This point is the ground point directly below the satellite and can be expressed in latitude and longitude or ECEF coordinates. Figure 9 shows an example of using the nadir point as the reference point.

[0105] Alt3: The terminal 20 may determine the center of the beam / cell of the serving cell / neighboring cell as a reference point. Note that the "cell" here may be a cell of a terrestrial network or a cell (service area) of an NTN. Also, the "beam" here may be a service area of ​​an NTN (e.g., formed by a satellite beam).

[0106] The positions of the cell centers of the serving cell / neighboring cell are broadcast, for example, from the NW (base station 10) to the terminal 20. Alt3 includes the following Alt3-1 and Alt3-2.

[0107] Alt3-1: The center of which cell (serving cell / neighboring cell) is to be used as the reference point may be set in the terminal 20 from the NW using, for example, a PCI or an index mapped to the cell.

[0108] Atl3-2: The terminal 20 may select a cell (serving cell / neighbor cell) to use as a reference point. The terminal 20 may report the selection result to the NW, for example, using a PCI or an index mapped to the cell.

[0109] Alt4: The reference point may be a fixed point set from the NW to the terminal 20. In this case, the reference point may be set from the NW to the terminal 20 using the location of the ECEF, or may be set implicitly from the NW to the terminal 20 using a common TA parameter.

[0110] Alt5: The reference point may be a fixed point selected by the terminal 20 and reported to the NW. For example, the terminal 20 may report the location of the reference point selected by itself in the coordinates of the ECEF.

[0111] Alt6: The terminal 20 may select a base station or a GW as a reference point.

[0112] The granularity of the location of the reference point may be any of m / cm / multiple m / multiple cm / etc.

[0113] The terminal 20 may use different Alts from Alt1 to Alt6 for N values, or may use different Alts from Alt1 to Alt6 for multiple satellites. For example, when reporting three values, Alt1 may be applied to two values ​​and Alt2 may be applied to one value.

[0114] (Reporting method in Example 1-2) The terminal 20 may report a reference point (e.g., a corresponding index) together with each of the N report values, or may report it together with all of the N report values, or may not report a reference point.

[0115] For example, when reporting three report values ​​1, 2, and 3 obtained using reference points 1, 2, and 3, terminal 20 may report them in the form of "{report value 1, reference point 1}, {report value 2, reference point 2}, {report value 3, reference point 3}" or "{report value 1, report value 2, report value 3}, {reference point 1, reference point 2, reference point 3}."

[0116] The reference points to be reported are one or more of the following: a satellite, a point directly below the satellite, the center of the beam / cell of a serving cell / neighboring cell, a point set from the NW, a point selected by the terminal 20, and a gNB / GW.

[0117] <Explicit notification of reference point> When reporting the N values, the terminal 20 may include, together with each reported value, information indicating which link the reported value is associated with.

[0118] For example, as shown in Fig. 10, assume that terminal 20 obtains and reports report values ​​using satellites X, Y, and Z as reference points. In this case, terminal 20 reports the report values ​​together with information indicating which satellite each report value is associated with. For example, the terminal reports information such as {satellite X, satellite Y, satellite Z}.

[0119] Also, for example, assume that terminal 20 obtains and reports report values ​​using the center point of the serving cell, the center point of the first neighboring cell, and the center point of the second neighboring cell as reference points. In this case, terminal 20 reports information indicating which cell each report value is associated with along with the report values. For example, terminal 20 reports information such as {serving cell, first neighboring cell, second neighboring cell}.

[0120] <Implicit notification of reference point> When reporting N values, the terminal 20 may report which reference point each reported value is associated with, depending on the order of the multiple reported values. The order may be defined in advance or may be set to the terminal 20 from the NW.

[0121] For example, if the first value of three reported values ​​is associated with satellite X, the next value is associated with satellite Y, and the last value is associated with satellite Z, terminal 20 reports a value obtained using satellite X as the reference point (e.g., TA1), a value obtained using satellite Y as the reference point (e.g., TA2), and a value obtained using satellite Z as the reference point (e.g., TA3) as information in the order {TA1, TA2, TA3}.

[0122] Also, for example, if the first value of three reported values ​​is associated with the serving cell, the next value is associated with the first neighboring cell, and the last value is associated with the second neighboring cell, terminal 20 reports a value obtained using the center point of the serving cell as the reference point (for example, TA1), a value obtained using the center point of the first neighboring cell as the reference point (for example, TA2), and a value obtained using the center point of the second neighboring cell as the reference point (for example, TA3) as information in the order {TA1, TA2, TA3}.

[0123] According to the second embodiment described above, the terminal 20 reports a plurality of pieces of location-related information to the NW, so that the NW can estimate the accurate location of the terminal 20.

[0124] Example 2 In the second embodiment, the terminal 20 directly reports the location of the terminal 20 to the NW. Examples of the information to be reported include the following Alt1 to Alt3.

[0125] Alt1: The terminal 20 reports the position of the terminal 20 acquired by the GNSS to the NW as position information in the ECEF format.

[0126] Alt2: The terminal 20 reports its position information acquired by GNSS as ECEF format position information converted with a certain bias. The bias is used for security reasons. In other words, applying a bias improves the confidentiality of the position information.

[0127] More specifically, the terminal 20 may perform the conversion by adding an offset to the position of the terminal 20 acquired by GNSS, or may perform the conversion by inputting the position of the terminal 20 acquired by GNSS into a function. The offset / function may be predefined / fixed in the specifications, may be set to the terminal 20 by the NW, or may be determined by the terminal 20 and reported from the terminal 20 to the NW. The function may also be a function that "adds an offset."

[0128] Alt3: The terminal 20 may report to the NW the distance between the terminal 20 and the satellite, and the azimuth angle and elevation angle from the terminal 20 to the satellite.

[0129] The terminal 20 can calculate the above values ​​from satellite ephemeris broadcast from the GNSS and NW. The position determined by these values ​​is difficult to spoof.

[0130] Granularity and Reporting Triggers in Example 2 The granularity of the values ​​reported by the terminal 20 may be any of m / cm / multiple m / multiple cm / etc.

[0131] The triggers for the terminal 20 to report a value include, for example, the following Alt1 to 5. That is, when the terminal 20 determines that at least one of the following five conditions Alt1 to 5 is satisfied, it uses this as a trigger to report a value to the NW. Note that any two or more of Alt1 to 5 may be combined.

[0132] Alt1: The value is reported in the RACH procedure (Random Access Procedure). The terminal 20 obtains the value to be reported and reports it, triggered by the start of the RACH procedure. The terminal 20 reports the value by including it in MSG3 or MSGA.

[0133] Alt2: A timer (periodic timer) is set from the base station 10 to the terminal 20. For example, the timer is reset to an initial value and started when the terminal 20 reports a value. When the timer expires, the terminal 20 reports the value, triggered by the expiration.

[0134] Alt3: A threshold is set from the NW to the terminal 20. When the terminal 20 detects that the current value has changed by more than the threshold compared to the value reported in the last (most recent) successful report, the terminal 20 reports the value using this detection as a trigger. When multiple values ​​are all included in the same MAC CE / RRC / PHY, the following may be applied.

[0135] Alt3-1: The terminal 20 triggers a report if any one of the values ​​changes more than a threshold value.

[0136] Alt3-2: The terminal 20 triggers a report when all of the plurality of values ​​(each of the plurality of values) change by more than a threshold value.

[0137] Alt3-3: The terminal 20 triggers a report when more than one, but not all, of the plurality of values ​​change by more than a threshold value.

[0138] Alt4: The terminal 20 makes a report using the setting / instruction signaling received from the base station 10 as a trigger.

[0139] Alt5: When transmitting uplink data, if there are available PUSCH resources for data transmission, terminal 20 may report the value using the available resources.

[0140] According to the second embodiment described above, the terminal 20 can report highly confidential location information.

[0141] Example 3 Next, a description will be given of Example 3. In Example 3, the terminal 20 reports to the NW a plurality of (N) values ​​of the difference in "TA / RTT / one-way propagation delay / distance" between the position of the terminal 20 acquired by GNSS and two reference points.

[0142] An example will be described using Fig. 11. In the example of Fig. 11, GW10B1 to GW10B3 are used as RP1 to RP3. In this example, the terminal 20 uses the distance d UE,RP1 and the distance d between the terminal 20 and RP1 UE,RP2 The difference between (d UE,RP1 -d UE,RP2 ), and the distance d between the terminal 20 and RP1 UE,RP1 and the distance d between the terminal 20 and the RP3 UE,RP3 The difference between (d UE,RP1 -d UE,RP3 ) to the NW. Note that "RP" or reference point may be replaced with "satellite."

[0143] As described above, the terminal 20 reports to the NW the difference between the position of the terminal 20 obtained by GNSS and the distance between two reference points, etc., so that the NW can estimate the position of the terminal 20 and, for example, verify the position reported from the terminal 20 (the position obtained by GNSS).

[0144] In Example 3-1 described later, the number of values ​​N will be explained. Also, in Example 3-2 described later, a method for determining the reference point will be explained.

[0145] Each reported value may be, for example, one of Alt1 to Alt4 below.

[0146] Alt1: The difference in TA between the position of the terminal 20 and the two reference points.

[0147] Alt2: The difference in RTT between the location of the terminal 20 and two reference points.

[0148] Alt3: The difference in one-way propagation delay between the location of the terminal 20 and two reference points.

[0149] Alt4: The difference in distance between the position of the terminal 20 and two reference points.

[0150] The N values, which are the number of values ​​to be reported, may be the same Alt value or different Alt values. For example, when reporting three values, terminal 20 may report three "distance differences," or may report a "TA difference," a "RTT difference," and a "distance difference."

[0151] Furthermore, terminal 20 may calculate / determine each of the N values ​​based on its relationship with a different satellite. For example, terminal 20 may calculate value #0 using satellite #0 and value #1 using satellite #1. The same applies to values ​​#3 and onward. Note that "satellite" may be replaced with "reference point."

[0152] For TA / RTT / propagation delay, the granularity of the reported value may be any of slot / symbol / multiple slots / multiple symbols / Tc / multiple Tc / subframe / multiple subframes / ms / multiple ms. For distance, the granularity may be any of m / cm / multiple m / multiple cm / etc.

[0153] Example 3: Reporting Method The terminal 20 may transmit the report value by any of MAC CE, RRC, and PHY (as UCI). More specifically, there are the following Alt1 and Alt2.

[0154] Alt1: The terminal 20 includes all of the multiple values ​​in the same MAC CE / RRC signaling / PHY signaling. For example, in a case where three values ​​are to be reported, assuming that MAC CE is used, the terminal 20 includes the three values ​​in the MAC CE and reports them.

[0155] Alt2: Terminal 20 may report multiple values ​​separately via MAC CE / RRC signaling / PHY signaling. For example, in the case of reporting three values, terminal 20 may report value 1 via MAC CE, value 2 via RRC, and value 3 via UCI.

[0156] Example 3: Reporting Triggers The triggers for the terminal 20 to report a value include, for example, the following Alt1 to 5. That is, when the terminal 20 determines that at least one of the following five conditions Alt1 to 5 is satisfied, it uses this as a trigger to report a value to the NW. Note that any two or more of Alt1 to 5 may be combined.

[0157] Alt1: The value is reported in the RACH procedure (Random Access Procedure). The terminal 20 obtains the value to be reported and reports it, triggered by the start of the RACH procedure. The terminal 20 reports the value by including it in MSG3 or MSGA.

[0158] Alt2: A timer (periodic timer) is set from the NW to the terminal 20. For example, the timer is reset to an initial value and started when the terminal 20 reports a value. When the timer expires, the terminal 20 reports the value using the expiration as a trigger.

[0159] Alt3: A threshold is set from the NW to the terminal 20. When the terminal 20 detects that the current value has changed by more than the threshold compared to the value reported in the last (most recent) successful report, the terminal 20 reports the value using this detection as a trigger. When multiple values ​​are all included in the same MAC CE / RRC / PHY, the following may be applied.

[0160] Alt3-1: The terminal 20 triggers a report if any one of the values ​​changes more than a threshold value.

[0161] Alt3-2: The terminal 20 triggers a report when all of the plurality of values ​​(each of the plurality of values) change by more than a threshold value.

[0162] Alt3-3: The terminal 20 triggers a report if some, but not all, of the values ​​change by more than a threshold value.

[0163] Alt4: The terminal 20 makes a report using the signaling of the setting / instruction received from the NW as a trigger.

[0164] Alt5: When transmitting uplink data, if there are available PUSCH resources for data transmission, terminal 20 may report the value using the available resources.

[0165] (Example 3-1) If multiple reference points are on the same plane as the terminal 20 (e.g., all reference points are on the Earth), two difference values ​​that can define two hyperbolae are needed to calculate the position of the terminal 20. Alternatively, three reference points may be needed.

[0166] If the reference points and the terminal 20 are not on the same plane, the difference values ​​may determine a plane rotated by a hyperbola. Therefore, in this case, three difference values ​​are required to calculate the position of the terminal 20. Alternatively, four reference points may be required.

[0167] The number N of reported values ​​is N = 2 or N = 3. However, N = 2 or 3 is an example, and values ​​other than N = 2 or 3 may also be used. For example, N may be 4, 5, or 6 or more.

[0168] The number N of reported values ​​may be predefined / fixed by specifications, may be set / instructed by the NW to the terminal 20, may be reported from the terminal 20 to the NW as a UE capability, or may be determined based on given conditions (e.g., how many satellites the terminal 20 is tracking).

[0169] (Example 3-2) The terminal 20 needs to determine two reference points for each reported value in the third embodiment. The method described in the first and second embodiments can be applied as a method for the terminal 20 to determine each reference point. For example, two different satellites may be used as two reference points for one difference value, and the centers of two different cells may be used as two reference points for another difference value.

[0170] According to the third embodiment described above, the terminal 20 reports a plurality of pieces of location-related information to the NW, so that the NW can estimate the accurate location of the terminal 20.

[0171] Example 4 Next, a description will be given of Example 4. In Examples 0, 1, 2, and 3 described so far, the terminal 20 may report to the NW an offset (difference) between the current value of the location-related information (TA / RTT / propagation delay / distance / location / difference, etc.) and the last (most recent) successfully reported value (TA / RTT / propagation delay / distance / location / difference, etc.).

[0172] That is, the terminal 20 reports offset=n_new-n_old to the NW, where n_new is the current value and n_old is the reported value of the last (most recent) successful report.

[0173] n_new and n_old are TA in Example 0, TA / RTT / one-way propagation delay / distance in Example 1, location information in Example 2, and the difference in "TA / RTT / one-way propagation delay / distance" between the position of terminal 20 acquired by GNSS and two reference points in Example 3.

[0174] According to the fourth embodiment, for example, it is possible to grasp the time series transition of location-related information in a network. Furthermore, when an impossible difference between n_new and n_old is detected in a network, it is possible to infer a failure or an unauthorized operation.

[0175] (Other examples) The following UE capabilities may be defined and reported from the terminal 20 to the NW.

[0176] Terminal capability indicating whether or not the function according to this embodiment (NW verify UE location) is supported Terminal capability indicating whether or not to report TA / RTT / one-way propagation delay / distance as terminal location-related information (Example 0 / 1) Terminal capability indicating whether or not to report terminal position information obtained by GNSS or information obtained by converting terminal position information obtained by GNSS (Example 2) Terminal capability indicating whether or not it supports reporting the difference in "TA / RTT / one-way propagation delay / distance" between the terminal position acquired by GNSS and two reference points (Example 3) The operation of this embodiment may be applied only when the terminal capability in question is reported from the terminal 20 to the NW. Also, the operation of this embodiment may be applied only when the operation in question is notified from the NW to the terminal 20 by higher layer signaling. Also, the operation of this embodiment may be applied only when the terminal capability in question is reported from the terminal 20 to the NW and the operation in question is notified from the NW to the terminal 20 by higher layer signaling.

[0177] Furthermore, the reporting of location-related information from the terminal 20 to the NW according to this embodiment may be applied to a network other than the NTN (for example, a terrestrial network).

[0178] (Device configuration) Next, a description will be given of an example of the functional configuration of the base station 10 and the terminal 20 that execute the processes and operations described above. The base station 10 and the terminal 20 include functions for executing the above-described embodiments. However, the base station 10 and the terminal 20 may each include only the functions proposed in any of the embodiments.

[0179] <Base station 10> Fig. 12 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 12, 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. 12 is merely an example. The names of the functional divisions and functional units may be any as long as they can perform the operations related to the embodiment of the present invention. The transmitting unit 110 and the receiving unit 120 may be called a communication unit.

[0180] The transmitter 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly. The receiver 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 transmitter 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL / UL control signals, DL data, etc. to the terminal 20. The transmitter 110 also transmits the setting information, etc., described in the embodiments.

[0181] The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads out the information from the storage device as needed. The control unit 140 performs, for example, overall control of the base station 10, including control related to signal transmission and reception. Note that the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120. Furthermore, the transmitting unit 110 and the receiving unit 120 may be called a transmitter and a receiver, respectively.

[0182] <Terminal 20> Fig. 13 is a diagram showing an example of the functional configuration of the terminal 20. As shown in Fig. 13, 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. 13 is merely an example. The names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention. The transmitting unit 210 and the receiving unit 220 may be called a communication unit.

[0183] 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 acquires a higher layer signal from the received physical layer signal. The transmitter 210 also transmits HARQ-ACK and receives the setting information and the like described in the embodiments. The transmitter 210 also reports (transmits) the location-related information described in the embodiments.

[0184] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in a storage device, and reads it out from the storage device as needed. The setting unit 230 also stores setting information that is set in advance. The control unit 240 performs overall control of the terminal 20, including control related to signal transmission and reception. The control unit 240 also acquires (calculates) the location-related information described in the embodiments. Note that the function unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the function unit related to signal reception in the control unit 240 may be included in the receiving unit 220. The transmitting unit 210 and the receiving unit 220 may be called a transmitter and a receiver, respectively.

[0185] <Additional Notes> The terminal of this embodiment may be configured as the terminal shown in each of the following items. Also, the following reporting method may be implemented. (Section 1) a control unit for acquiring a plurality of terminal location related information using a plurality of reference points associated with a non-terrestrial network; a transmitting unit that reports the plurality of pieces of terminal location related information to a base station; A terminal comprising: (Section 2) The plurality of reference points includes a satellite or an air vehicle. 1. The terminal described in paragraph 1. (Section 3) The plurality of terminal location related information includes at least one of a timing advance value between a reference point and the terminal, a round trip delay between the reference point and the terminal, a one-way propagation delay between the reference point and the terminal, and a distance between the reference point and the terminal. 2. A terminal according to claim 1 or 2. (Section 4) The plurality of terminal position related information includes at least one of a difference in timing advance value between the terminal and two reference points, a difference in round trip delay between the terminal and two reference points, a difference in one-way propagation delay between the terminal and two reference points, and a difference in distance between the terminal and two reference points. A terminal according to any one of paragraphs 1 to 3. (Section 5) a control unit that acquires terminal location information by GNSS and converts the terminal location information by adding an offset to the terminal location information, or converts the terminal location information by inputting the terminal location information into a function; a transmitting unit that reports the converted terminal location information to a base station; A terminal comprising: (Section 6) obtaining a plurality of terminal location-related information using a plurality of reference points associated with a non-terrestrial network; reporting the plurality of terminal location related information to a base station; A terminal-executed reporting method comprising:

[0186] Any of the above configurations provides a technique for a terminal to transmit appropriate terminal location-related information to a network. According to the second aspect, a satellite or an aircraft can be used as a reference point. According to the third and fourth aspects, the network can accurately estimate the terminal's location.

[0187] (Hardware configuration) The block diagrams (FIGS. 12 and 13) used in the description of the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may be realized by combining the single device or the multiple devices with software.

[0188] Functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocation, mapping, and assignment. For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. As mentioned above, there are no particular limitations on how these functions are implemented.

[0189] For example, the base station 10, the terminal 20, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 14 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The base station 10 and the terminal 20 described above 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.

[0190] In the following description, the term "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the apparatuses shown in the drawings, or may be configured to exclude some of the apparatuses.

[0191] Each function in the base station 10 and the terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001, the memory device 1002, etc., so that the processor 1001 performs calculations, controls communication by the communication device 1004, and controls at least one of reading and writing data in the memory device 1002 and the auxiliary memory device 1003.

[0192] The processor 1001 controls the entire computer by running, for example, an operating system. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, the above-mentioned control unit 140, control unit 240, etc. may be realized by the processor 1001.

[0193] Furthermore, the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes in accordance with the programs. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 140 of the base station 10 shown in FIG. 12 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. Furthermore, for example, the control unit 240 of the terminal 20 shown in FIG. 13 may be implemented by a control program stored in the storage device 1002 and running on the processor 1001. While the above-described various processes have been described as being executed by one processor 1001, they may also be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The programs may be transmitted from a network via a telecommunications line.

[0194] The storage device 1002 is a computer-readable recording medium and may be configured, for example, by at least one of a read-only memory (ROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), a random access memory (RAM), 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 according to an embodiment of the present disclosure.

[0195] The secondary 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 disc), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy disk, a magnetic strip, etc. The above-mentioned storage medium may be, for example, a database, a server, or other suitable medium including at least one of the storage device 1002 and the secondary storage device 1003.

[0196] The communication device 1004 is hardware (transmission / reception 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, or a communication module. 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 frequency division duplex (FDD) and time division duplex (TDD). For example, a transmission / reception antenna, an amplifier unit, a transmission / reception unit, a transmission path interface, etc. may be realized by the communication device 1004. The transmission / reception unit may be implemented as a transmission unit and a reception unit that are physically or logically separated.

[0197] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0198] Furthermore, 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.

[0199] Furthermore, base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

[0200] Fig. 15 shows a configuration example of a vehicle 2001. As shown in Fig. 15, 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 to 2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in the present disclosure may be applied to a communication device mounted on the vehicle 2001, and may be applied to the communication module 2013, for example. For example, the function of the terminal 20 may be provided in the communication module 2013. Furthermore, for example, the function of the base station 10 may be provided in the communication module 2013.

[0201] The drive unit 2002 is configured, for example, by 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 handle), 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.

[0202] The electronic control unit 2010 is composed of a microprocessor 2031, a 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).

[0203] The signals from the various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the current of the motor, a rotation speed signal of the front and rear wheels obtained by a rotation speed sensor 2022, an air pressure signal of the front and rear wheels 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.

[0204] 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 various types of 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 obtained from external devices via the communication module 2013, etc., to provide various types of multimedia information and multimedia services to the occupants of the vehicle 2001.

[0205] The driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as a millimeter-wave radar, a LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, autonomous vehicle (AV) map, etc.), a gyro system (e.g., an IMU (Inertial Measurement Unit), an INS (Inertial Navigation System), etc.), an AI (Artificial Intelligence) chip, and an AI processor, as well as one or more ECUs that control these devices. The driving assistance system unit 2030 also transmits and receives various information via the communication module 2013 to realize the driving assistance function or the autonomous driving function.

[0206] 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 transmits and receives data via the communication port 2033 to and from 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 in the vehicle 2001.

[0207] 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, or the like.

[0208] The communication module 2013 transmits, via wireless communication to an external device, a current signal from the current sensor that is input to the electronic control unit 2010. The communication module 2013 also transmits, via wireless communication to an external device, the rotation speed signals of the front and rear wheels acquired by a rotation speed sensor 2022, the air pressure signals of the front and rear wheels acquired by an air pressure sensor 2023, the vehicle speed signal acquired by a vehicle speed sensor 2024, the acceleration signal acquired by an acceleration sensor 2025, the accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by a brake pedal sensor 2026, the shift lever operation signal acquired by a shift lever sensor 2027, and the detection signals for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028, which are input to the electronic control unit 2010.

[0209] The communication module 2013 receives various information (traffic information, traffic signal information, inter-vehicle information, etc.) transmitted from external devices and displays it on an information service unit 2012 provided in the vehicle 2001. The communication module 2013 also stores the various information received from the external devices in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, 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, axle 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.

[0210] (Supplementary explanation of the embodiment) Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, alterations, alternatives, and substitutions. While specific numerical examples have been used to facilitate understanding of the invention, unless otherwise specified, these numerical values ​​are merely examples, and any appropriate values ​​may be used. The division of items in the above description is not essential to the present invention; two or more items may be combined as needed, and items described in one item may apply to items described in another item (unless inconsistent). The boundaries between functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries between physical components. The operations of multiple functional units may be performed by a single physical component, or the operations of a single functional unit may be performed by multiple physical components. The order of the processing steps described in the embodiments may be reversed as long as there is no contradiction. For convenience of processing description, the base station 10 and terminal 20 have been described using functional block diagrams. However, such devices may be implemented using hardware, software, or a combination thereof. The software operated by the processor of the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor of 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, registers, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.

[0211] Furthermore, the notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, 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 thereof. Furthermore, the 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, or the like.

[0212] Each aspect / embodiment described in the present disclosure may be any of the following: LTE (Long Term Evolution), LTE-Advanced (LTE-A), 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 decimal number)), 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 The present invention may be applied to at least one of systems using 802.20, UWB (Ultra-Wideband), Bluetooth (registered trademark), or other appropriate systems, and next-generation systems that are extended, modified, created, or defined based on these systems. The present invention may also be applied to a combination of multiple systems (e.g., a combination of at least one of LTE and LTE-A with 5G).

[0213] The order of the procedures, sequences, flowcharts, etc. of each aspect / embodiment described herein may be changed unless it is consistent. For example, the methods described in this disclosure present elements of various steps using an example order and are not limited to the particular order presented.

[0214] In this specification, a specific operation that is described as being performed by the base station 10 may also be performed by its upper node in some cases. In a network consisting of one or more network nodes having the base station 10, it is clear that various operations performed for communication with the terminal 20 may be performed by at least one of the base station 10 and another network node other than the base station 10 (such as, but not limited to, an MME or an S-GW). Although the above example illustrates a case where there is one other network node other than the base station 10, the other network node may be a combination of multiple other network nodes (such as an MME and an S-GW).

[0215] The information or signals described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer), or may be input / output via multiple network nodes.

[0216] Input and output information may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information may be overwritten, updated, or added to. Output information may be deleted. Input information may be sent to another device.

[0217] In the present disclosure, the determination may be made based on a value represented by one bit (0 or 1), a Boolean value (true or false), or a numerical comparison (e.g., comparison with a predetermined value).

[0218] 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.

[0219] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0220] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, 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.

[0221] Note that terms explained in this disclosure and terms 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 be called a carrier frequency, a cell, a frequency carrier, etc.

[0222] As used in this disclosure, the terms "system" and "network" are used interchangeably.

[0223] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by an index.

[0224] The names used for the above-described parameters are not intended to be limiting in any way. Furthermore, the mathematical expressions 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 intended to be limiting in any way.

[0225] In this disclosure, terms such as "base station (BS)," "radio 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" may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0226] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0227] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0228] 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.

[0229] 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 mobile body, or the mobile body itself. The mobile body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station may also include 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.

[0230] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)). In this case, the terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, terms such as an uplink channel and a downlink channel may be read as a side channel.

[0231] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station may be configured to have the functions of the user terminal described above.

[0232] As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of actions. "Determining" and "determining" may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (e.g., searching in a table, database, or other data structure), ascertaining, and the like. "Determining" and "determining" may also include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and the like. Furthermore, "judgment" and "decision" can include regarding resolving, selecting, choosing, establishing, comparing, etc. as having been "judged" or "decided." In other words, "judgment" and "decision" can include regarding some action as having been "judged" or "decided." Furthermore, "judgment (decision)" can be interpreted as "assuming," "expecting," "considering," etc.

[0233] The terms "connected," "coupled," or any variation thereof, refer 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. For example, "connected" may be read as "access." As used in this disclosure, two elements may be considered to be "connected" or "coupled" to each other using one or more wires, cables, and / or 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.

[0234] The reference signal may be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.

[0235] As used in this disclosure, 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."

[0236] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. 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 in some way precede the second element.

[0237] The "means" in the configuration of each of the above devices may be replaced with "part," "circuit," "device," etc.

[0238] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0239] 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.

[0240] Numerology may be communication parameters that apply to at least one of transmission and reception of a signal or channel, such as subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, specific filtering operations performed by the transceiver in the frequency domain, and specific windowing operations performed by the transceiver in the time domain.

[0241] A slot may be composed of one or more symbols (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol) in the time domain. A slot may be a time unit based on numerology.

[0242] 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.

[0243] The radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals, and may be referred to by other names corresponding to the radio frame, subframe, slot, minislot, and symbol.

[0244] For example, 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. That is, at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.

[0245] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, 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. Note that the definition of TTI is not limited to this.

[0246] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0247] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0248] A TTI having a time length of 1 ms may be called a regular TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0249] In addition, 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, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0250] A resource block (RB) 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 numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0251] The time domain of an RB may include one or more symbols and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0252] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, or the like.

[0253] 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.

[0254] A Bandwidth Part (BWP) (which may also be referred to as a fractional 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 their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0255] The BWP may include a BWP for UL (UL BWP) and a BWP for DL ​​(DL BWP). One or more BWPs may be set for the terminal 20 within one carrier.

[0256] At least one of the configured BWPs may be active, and the terminal 20 may not expect to transmit or receive a predetermined signal / channel outside the active BWP. Note that the terms "cell," "carrier," and the like in this disclosure may be read as "BWP."

[0257] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, 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, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0258] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0259] In the present disclosure, the term "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 "coupled" may also be interpreted in the same way as "different."

[0260] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, notification of predetermined information (e.g., notification that "X is true") is not limited to being done explicitly, but may be done implicitly (e.g., by not notifying the predetermined information).

[0261] Although the present disclosure has been described in detail above, it is 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 modified and altered forms without departing from the spirit and scope of the present disclosure as defined by the claims. Therefore, the description of the present disclosure is intended to be illustrative and does not have any limiting meaning on the present disclosure. [Explanation of symbols]

[0262] 10 base station 10A satellite 10B Gateway 10C ground base station 10D CN 10E Flying Object 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 terminals 210 Transmitter 220 Receiving unit 230 Setting Section 240 Control Unit 30 Core Network 1001 processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication equipment 1005 Input Device 1006 Output Device 2001 Vehicle 2002 Drive unit 2003 Steering Section 2004 accelerator pedal 2005 brake pedal 2006 Shift Lever 2007 front wheel 2008 rear wheel 2009 Axle 2010 Electronic Control Unit 2012 Information Services Department 2013 Communication Module 2021 Current Sensor 2022 RPM 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 Assistance Systems Department 2031 microprocessor 2032 memory (ROM, RAM) 2033 Communication port (IO port)

Claims

1. a control unit for acquiring a plurality of terminal location related information using a plurality of reference points associated with a non-terrestrial network; a transmitting unit that reports the plurality of pieces of terminal location related information to a base station, The plurality of terminal location related information includes at least one of a timing advance value between a reference point and the terminal and a distance between the reference point and the terminal. Terminal.

2. The plurality of reference points includes a satellite or an air vehicle. The terminal according to claim 1 .

3. The plurality of terminal location related information includes at least one of a difference in timing advance value between the terminal and two reference points, a difference in round trip delay between the terminal and two reference points, a difference in one-way propagation delay between the terminal and two reference points, and a difference in distance between the terminal and two reference points.

3. The terminal according to claim 1 or 2.

4. obtaining a plurality of terminal location-related information using a plurality of reference points associated with a non-terrestrial network; and reporting the plurality of pieces of terminal location-related information to a base station, The plurality of terminal location related information includes at least one of a timing advance value between a reference point and the terminal and a distance between the reference point and the terminal. How to report.

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