Terminals, network nodes, and communication methods

Abstract

Within the area covered by NTN, processing will be carried out with a geographically granular level of detail. [Solution] The terminal includes a receiving unit that receives a list of partition correspondence information, in which key values ​​and partitions are associated, from a network node via a base station, and a control unit that determines the partition including the location where the terminal is located based on the list and obtains the key value corresponding to that partition.

Description

Technical Field

[0001] The present invention relates to a terminal, a network node, and a communication method in a communication system.

Background Art

[0002] In 3GPP (registered trademark) (3rd Generation Partnership Project), in order to achieve further increase in system capacity, further increase in data transmission speed, further reduction in latency in a radio section, etc., a radio communication method called 5G or NR (New Radio) (hereinafter, this radio communication method is referred to as "5G" or "NR") is being studied. Also, the study of 6G is underway.

[0003] Currently, NTN (Non-Terrestrial Network) is being studied. NTN uses a non-terrestrial network such as a satellite to provide services to areas that cannot be covered mainly in terms of cost by a terrestrial 5G network. In NTN, a large area can be covered by HAPS (High Altitude Platform Station) or a satellite.

Prior Art Documents

Non-Patent Documents

[0004]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] At NTN, the area covered by a base station via HAPS or satellite is significantly larger than the area covered by a base station's conventional macrocell. Therefore, in the process of sending information or commands to a terminal using system information, it is not possible to perform processing with the same granularity as a macrocell from a geographical perspective.

[0006] This invention has been made in view of the above points, and aims to provide a technology for performing geographically fine-grained processing in the area covered by NTN. [Means for solving the problem]

[0007] According to the disclosed technology, a terminal comprising a receiving unit that receives a list of partition correspondence information, in which key values ​​and partitions are associated, from a network node via a base station, Based on the aforementioned list, a control unit determines the area including the location of the terminal and obtains a key value corresponding to that area. A terminal equipped with this feature is provided. [Effects of the Invention]

[0008] According to the disclosed technology, a technology is provided for performing geographically granular processing in the area covered by NTN. [Brief explanation of the drawing]

[0009] [Figure 1] This is a diagram showing an example from NTN (1). [Figure 2] This figure shows an example (2) of NTN. [Figure 3] This figure shows an example (3) of NTN. [Figure 4] This figure shows an example (4) of NTN. [Figure 5] This is a diagram showing an example of a communication system. [Figure 6] This is a diagram showing an example of a communication system. [Figure 7] This is a diagram illustrating example 1 of the operation. [Figure 8] This is a diagram for explaining Operation Example 2. [Figure 9] This is a diagram for explaining Operation Example 3. [Figure 10] This is a diagram for explaining Operation Example 4. [Figure 11] This is a diagram for explaining Operation Examples 6 to 8. [Figure 12] This is a diagram showing an example of the functional configuration of the base station 10 and the AMF (network node) 30 in an embodiment of the present invention. [Figure 13] This is a diagram showing an example of the functional configuration of the terminal 20 in an embodiment of the present invention. [Figure 14] This is a diagram showing an example of the hardware configuration of the base station 10, the terminal 20, and the AMF 30 in an embodiment of the present invention. [Figure 15] This is a diagram showing an example of the configuration of the vehicle 2001 in an embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention is applied are not limited to the following embodiments. [[ID=三十二]]

[0011] L

[0012] In the operation of the wireless communication system according to the embodiment of the present invention, existing technologies are appropriately used. However, the existing technology is, for example, existing LTE or NR, but is not limited to existing LTE or NR.

[0013] (Regarding NTN) Since the technology according to this embodiment is related to NTN (Non-Terrestrial Network), NTN will be described first.

[0014] FIG. 1 is a diagram showing an example (1) of NTN. NTN (Non-Terrestrial Network) uses devices existing non-terrestrially such as satellites to provide services to areas that cannot be covered mainly in terms of cost in a terrestrial 5G network. Also, NTN can supply more reliable services. For example, it is assumed to be applied to IoT (Internet of Things), ships, buses, trains, and critical communications. Also, NTN has scalability by efficient multicast or broadcast.

[0015] As an example of NTN, as shown in FIG. 1, satellite 10A can retransmit a signal transmitted from terrestrial base station 10B to provide services to an area where no terrestrial base station is arranged, such as a mountainous area.

[0016] The terrestrial 5G network may have a configuration as described below. The terrestrial 5G 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 terminal 20. The physical resources of the wireless signal are defined in the time domain and the frequency domain. 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 terminal 20. The synchronization signal is, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, by NR-PBCH and is also called notification information. The system information may be called broadcast information.

[0017] Base station 10 transmits control signals or data to terminal 20 via DL (Downlink) and receives control signals or data from terminal 20 via UL (Uplink). Both base station 10 and terminal 20 are capable of transmitting and receiving signals using beamforming. Both base station 10 and terminal 20 are also capable of applying MIMO (Multiple Input Multiple Output) communication to DL or UL. Furthermore, both base station 10 and terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) using CA (Carrier Aggregation).

[0018] Terminal 20 is a communication device equipped with wireless communication capabilities, such as a smartphone, mobile phone, tablet, wearable device, or M2M (Machine-to-Machine) communication module. Terminal 20 receives control signals or data from base station 10 via DL and transmits control signals or data to base station 10 via UL, thereby utilizing various communication services provided by the wireless communication system.

[0019] Figure 2 shows an example of NTN (2). The area per cell or beam in NTN is very large compared to terrestrial networks (TN). Figure 2 shows an example of NTN configured by satellite retransmission. The connection between satellite 10A and NTN gateway 10B is called the feeder link, and the connection between satellite 10A and UE20 is called the service link.

[0020] As shown in Figure 2, the delay difference between the near-side UE20A and the far-side UE20B is, for example, 10.3 ms for GEO (Geosynchronous orbit) and 3.2 ms for LEO (Low Earth orbit). The beam size in NTN is, for example, 3500 km for GEO and 1000 km for LEO.

[0021] Figure 3 shows an example of NTN (3). As shown in Figure 3, NTN is realized by a satellite in space or an aircraft in the air. For example, a GEO satellite may be located at an altitude of 35,786 km and have a geostationary orbit. For example, a LEO satellite may be located at an altitude of 500-2000 km and orbit with a period of 88-127 minutes. For example, a HAPS (High Altitude Platform Station) may be located at an altitude of 8-50 km and perform a circular flight.

[0022] As shown in Figure 3, GEO satellites, LEO satellites, and HAPS aircraft may be connected to ground stations gNB via gateways. The service area may also increase in the order of HAPS, LEO, and GEO. The area (cell) that base station 10 covers on the ground via HAPS or satellites may be called an NTN wide-area cell.

[0023] For example, NTN can extend the coverage of a 5G network to areas that are not yet serviced or are already serviced. Furthermore, NTN can improve the continuity, availability, and reliability of services in ships, buses, trains, or other critical communications. The fact that it is NTN may be indicated by the transmission of a special parameter to terminal 20, which may be, for example, a parameter related to the determination of Timing Advance (TA) based on information relating to satellites or aircraft.

[0024] Figure 4 shows an example (4) of NTN. Figure 4 shows an example of NTN's network architecture assumed in the case of a transparent payload. As shown in Figure 4, the CN (Core Network) 10D, gNB 10C, and gateway 10B are connected. Gateway 10B is connected to satellite 10A via a feeder link. Satellite 10A is connected to terminal 20A or VSAT (Very small aperture terminal) 20B via a service link. An NR Uu is established between gNB 10C and terminal 20A or VSAT 20B.

[0025] Furthermore, NTN's network architecture may employ FDD or TDD. Also, ground cells may be fixed or mobile. Terminal 20 may also have the capability to support GNSS (Global Navigation Satellite System). For example, a power class 3 handheld device may be assumed in FR1. Also, a VSAT device may be assumed in at least FR2.

[0026] Furthermore, NTN's network architecture may also assume a regenerative payload. For example, the gNB function may be mounted on a satellite or aircraft. Alternatively, the gNB-DU may be mounted on a satellite or aircraft, and the gNB-CU may be deployed as a ground station.

[0027] (Example of a communication system) An example of a communication system intended for use in this embodiment is shown in Figure 5. As shown in Figure 5, the communication system consists of a terminal 20, which is a UE, and multiple network nodes. Hereafter, one network node will be assigned to each function, but one network node may implement multiple functions, or multiple network nodes may implement one function. Also, the "connection" described below may be a logical connection or a physical connection.

[0028] The RAN (Radio Access Network) 10 is a network node with wireless access functionality, which may include a base station 10, and is connected to the UE 20, AMF (Access and Mobility Management Function) 30, and UPF (User plane function). The AMF 30 is a network node that has functions such as terminating the RAN interface, terminating the NAS (Non-Access Stratum), registration management, connection management, reachability management, and terminal mobility management. The UPF is a network node that interconnects with the DN (Data Network) and has functions related to processing user plane data, such as PDU (Protocol Data Unit) session points to the outside, packet routing and forwarding, and user plane QoS (Quality of Service) handling. The UPF and DN constitute a network slice. In the wireless communication network of this embodiment, multiple network slices are constructed.

[0029] AMF30 is connected to UE20, RAN10, SMF (Session Management function), NSSF (Network Slice Selection Function), NEF (Network Exposure Function), NRF (Network Repository Function), UDM (Unified Data Management), AUSF (Authentication Server Function), PCF (Policy Control Function), and AF (Application Function). AMF30, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, and AF are network nodes that are interconnected via interfaces based on their respective services: Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf.

[0030] SMF is a network node with functions such as session management, IP (Internet Protocol) address allocation and management for UEs, DHCP (Dynamic Host Configuration Protocol) functionality, ARP (Address Resolution Protocol) proxy, and roaming functionality. NEF is a network node with the function of notifying other NFs (Network Functions) of capabilities and events. NSSF is a network node with functions such as selecting the network slice to which UE20 connects, determining the allowed NSSAI (Network Slice Selection Assistance Information), determining the NSSAI to be set, and determining the AMF set to which UE20 connects. PCF is a network node with the function of controlling network policy. AF is a network node with the function of controlling application servers. NRF is a network node with the function of discovering NF instances that provide services. UDM is a network node that manages subscriber data and authentication data. UDM is connected to UDR (User Data Repository) which holds this data.

[0031] Figure 6 is a diagram illustrating an example of a communication system in a roaming environment. As shown in Figure 6, the network consists of a UE, which is terminal 20, and multiple network nodes.

[0032] SEPP is an opaque proxy that filters control plane messages between PLMNs (Public Land Mobile Networks). Figure 2 shows vSEPP as the SEPP in the visited network, and hSEPP as the SEPP in the home network.

[0033] As shown in Figure 6, UE20 is in a roaming environment connected to (R)AN10 and AMF30 in VPLMN (Visited PLMN). VPLMN and HPLMN (Home PLMN) are connected via vSEPP and hSEPP. UE20 can communicate with the HPLMN's UDM, for example, via the VPLMN's AMF.

[0034] The following will provide a more detailed explanation of the problem, followed by a description of the technology related to this embodiment. Hereafter, "HAPS or satellite" will be referred to as "HAPS / satellite". Furthermore, HAPS and satellites may be collectively referred to as "flying objects".

[0035] (Regarding the issues) As already explained, the area covered by base station 10 via HAPS / satellite is significantly larger than the area covered by base station 10 with a normal macrocell. Therefore, in the process of sending information or commands to terminal 20 using system information, it is not possible to perform processing with the same granularity as a macrocell from a geographical perspective.

[0036] For example, it is not possible to send ETWS (Earthquake and Tsunami Warning system) notifications only to users of terminal 20 located in a portion of the area covered by HAPS / satellites. ETWS is a system that delivers emergency information about disasters such as earthquakes and tsunamis to terminal 20.

[0037] Similarly, it is not possible to enable UAC (Unified Access Control) only for terminals 20 located in a portion of the area. UAC is a unified access control method that combines multiple access restriction methods that existed in LTE.

[0038] Solutions to the above challenges are needed. Therefore, in discussions regarding NTN's ETWS, it is being considered to include geofencing information, already used by CMAS (Commercial Mobile Alert Service), when distributing ETWS emergency information from HAPS / satellites. CMAS is a public emergency alert system primarily used in North America, which delivers emergency alerts to users via commercial mobile networks.

[0039] In the case of CMAS, the geofencing information is large in size and cannot be sent to terminal 20 in a single SIB transmission. Therefore, it is segmented and sent to terminal 20 in multiple SIB transmissions.

[0040] ETWS primary notifications were implemented with a focus on speed and do not have a mechanism for segmenting. Furthermore, segmenting the transmission would compromise its speed. Currently, there is no way to include geofencing information in ETWS primary notifications without sacrificing this speed.

[0041] (Summary of the embodiment) An overview of the technology related to this embodiment, which solves the above problems, will be described. In this embodiment, when terminal 20 performs a registration procedure to register with the network, AMF 30 sends a list of [key value, definition of one geofencing partition] to terminal 20.

[0042] The [key value, definition of one geofencing parcel] is information that associates the key value with a geofencing parcel. A geofencing parcel represents, for example, a geographical area. A geofencing parcel may be represented, for example, using geographical coordinates, an address, or other information.

[0043] Base station 10, which provides an NTN wide-area cell, includes an identifier in its system information indicating that its cell is an NTN wide-area cell. When terminal 20 recognizes that it is camped (located) in an NTN wide-area cell, it periodically uses GPS or other means to check which area it is located in, that is, which area it is located in that corresponds to which key value.

[0044] In this embodiment, both the ETWS primary notification and the ETWS secondary notification include key values ​​in addition to existing information. The ETWS primary notification includes disaster information such as "earthquake" as existing information, and the ETWS secondary notification includes messages such as the epicenter and seismic intensity as existing information.

[0045] If terminal 20 is located in the section corresponding to the received key value, it will perform the necessary ringing action or message display action.

[0046] Furthermore, in this embodiment, the UAC regulation information transmitted from the base station 10 to the terminal 20 includes a key value in addition to the existing information. The terminal 20 applies the regulation information if it is located in the area corresponding to the received key value.

[0047] (Example of operation) Referring to Figures 7 to 11, an example of the operation of the communication system in this embodiment will be described, specifically the operation of the terminal 20, base station 10, and AMF 30. The base station 10 can form an NTN wide-area cell via HAPS or satellite. Alternatively, the base station 10 may be mounted on HAPS or a satellite.

[0048] In this example, AMF30 maintains a list of [key values, definitions of one geofencing area] for the area covered by the NTN wide-area cell.

[0049] Furthermore, in this example of operation, when the base station 10 is part of an NTN wide-area cell, it includes a large cell indication, which is an identifier indicating that the cell is an NTN wide-area cell, in its system information.

[0050] Hereinafter, "[key value, definition of one geofencing partition]" may be referred to as "partition correspondence information where the key value is associated with a partition," and "[list of key values, definition of one geofencing partition]" may be referred to as "partition correspondence information list."

[0051] In this example, AMF30 is an example of a network node that possesses a partition assignment information list and sends it to terminal 20. The network node that possesses and sends the partition assignment information list to terminal 20 is not limited to AMF30. Furthermore, in this example, the partition assignment information list is sent to terminal 20 during the registration procedure, but the timing of sending the partition assignment information list to terminal 20 is not limited to the timing during the registration procedure.

[0052] <Example of operation 1> Refer to Figure 7 to explain Operation Example 1. Operation Example 1 is an example of operation when terminal 20 is located within NTN coverage.

[0053] In step 101 of Figure 7, base station 10 transmits an SIB including a large cell indication, and terminal 20 receives the SIB.

[0054] In S102, terminal 20 recognizes that the cell in which terminal 20 is located is an NTN wide-area cell by detecting a large cell indication included in the SIB. Terminal 20 also recognizes that it does not possess the area correspondence information corresponding to its current location.

[0055] In S103, terminal 20 sends a Registration request, or a Registration request (Geofencing information request) that includes a Geofencing information request, to AMF 30 via base station 10. The Geofencing information request is a request for a list of area correspondence information.

[0056] In this case, even if a geofencing information request is not included, the registration request includes the functionality to request a partition correspondence information list.

[0057] Upon receiving the registration request, the AMF30, in S104, sends to the terminal 20, as geofencing information, a list of area coverage information related to the area covered by the base station 10 that relayed the registration request via the base station 10, including it in the registration accept message. The terminal 20 then obtains this area coverage information list.

[0058] In other words, the AMF30 estimates the approximate location of the terminal 20 from the base station 10 identifier included in the registration request message, and extracts a list of area correspondence information relating to that location and the surrounding area from its entire holding list. The AMF30 then sends a response message containing the extracted list to the terminal 20.

[0059] <Example of operation 2> Refer to Figure 8 to explain Operation Example 2. Operation Example 2 is also an example of operation when terminal 20 is located within NTN coverage.

[0060] In S201 of Figure 8, base station 10 transmits an SIB including a large cell indication, and terminal 20 receives the SIB.

[0061] In S202, terminal 20 recognizes that the cell in which terminal 20 is located is an NTN wide-area cell by detecting a large cell indication included in the SIB. Terminal 20 also recognizes that it possesses area correspondence information corresponding to its current location.

[0062] In S203, terminal 20 sends a Registration request to AMF 30 via base station 10 indicating that Geofencing information, which is a list of area correspondence information, is not needed. In S204, AMF 30 sends a Registration accept to terminal 20.

[0063] <Example of operation 3> Refer to Figure 9 to explain Operation Example 3. Operation Example 3 is an example of operation when terminal 20 is located in a cell outside of NTN coverage.

[0064] In S301, base station 10 transmits an SIB, and terminal 20 receives the SIB. This SIB does not include a large cell indication.

[0065] In S302, terminal 20 decides to acquire geofencing information (partition correspondence information list) as a preliminary step, even though terminal 20 is not located under the NTN wide-area cell.

[0066] In S303, terminal 20 sends a Registration request, including a Geofencing information request, to AMF 30 via base station 10.

[0067] Upon receiving a registration request, AMF30, in S304, sends a list of area correspondence information corresponding to the area surrounding base station 10 as geofencing information to terminal 20 via base station 10, including it in the registration accept message. Terminal 20 then obtains the area correspondence information list.

[0068] <Example of operation 4> Refer to Figure 10 to explain Operation Example 4. Operation Example 4 is also an example of operation when terminal 20 is located in a cell outside of NTN coverage.

[0069] In S401, base station 10 transmits an SIB, and terminal 20 receives the SIB. This SIB does not include a large cell indication.

[0070] In S402, terminal 20 recognizes that although terminal 20 is not located under the NTN wide-area cell network, it holds a list of area-specific information corresponding to the area surrounding base station 10.

[0071] In S403, terminal 20 sends a Registration request to AMF 30 via base station 10 indicating that Geofencing information, which is a list of area correspondence information, is not needed. In S404, AMF 30 sends a Registration accept to terminal 20.

[0072] <Example of operation 5> As example 5 of operation, we will describe an example of the operation of terminal 20 when terminal 20 possesses a list of partition correspondence information (Geofencing information).

[0073] When terminal 20 recognizes that the cell in which terminal 20 is located is an NTN wide-area cell based on the large cell indication included in the SIB received from base station 10, terminal 20 appropriately checks which key value corresponds to the area it is located in. In other words, terminal 20 obtains the key value corresponding to the area containing its current location from the area correspondence information list. Appropriate checking may include, for example, checking periodically (periodically).

[0074] Below, examples 6 to 8 of operations using key values ​​will be explained with reference to Figure 11. In examples 6 to 8, terminal 20 holds a partition correspondence information list and performs the operation described in example 5 above.

[0075] <Example of operation 6> Operation Example 6 is an example of operation related to ETWS primary notification. In S501 of Figure 11, base station 10 transmits an SIB6 containing the ETWS primary notification and one or more key values. Terminal 20 receives the SIB6.

[0076] In S502, terminal 20 rings if it determines that one or more key values ​​received from base station 10 are the same as the key value of the area where terminal 20 is located.

[0077] <Example of operation 7> Operation Example 7 is an example of operation related to ETWS secondary notification. In S501 of Figure 11, base station 10 transmits an SIB7 containing an ETWS secondary notification and one or more key values. Terminal 20 receives the SIB7.

[0078] In S502, if terminal 20 determines that one or more key values ​​received from base station 10 are the same as the key value of the area where terminal 20 is located, it displays the received ETWS secondary notification message.

[0079] Furthermore, the ETWS primary notification and ETWS secondary notification may be collectively referred to as earthquake early warning information. Also, an SIB (SIB6 or SIB7) that includes either the ETWS primary notification or the ETWS secondary notification may be referred to as earthquake early warning information.

[0080] <Example of operation 8> Operation Example 8 is an example of operation related to UAC. In S501 of Figure 11, the base station 10 transmits an SIB1 containing UAC access restriction information (uac-BarringInfo(uac-BarringArea(key value))) which includes one or more key values. The terminal 20 receives the SIB1.

[0081] In S502, if terminal 20 determines that one or more key values ​​received from base station 10 are the same as the key value of the area where terminal 20 is located, it applies the received access restriction information. In other words, terminal 20 performs an access restriction operation by applying the access restriction information.

[0082] (Effects of the embodiment) According to the technology of this embodiment, it becomes possible to perform geographically granular processing in the area covered by NTN.

[0083] (Device configuration) Next, we will describe an example of the functional configuration of the base station 10, AMF 30, and terminal 20 that perform the processes and operations described above. The base station 10, AMF 30, and terminal 20 include all the functions in the embodiments described above. However, the base station 10, AMF 30, and terminal 20 may each have only some of the functions in the embodiments.

[0084] <Base station 10 and AMF30> Figure 12 shows an example of the functional configuration of the base station 10 and the AMF 30. As shown in Figure 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 Figure 12 is merely an example. The functional classifications and names of the functional units can be anything as long as they can perform the operations according to the embodiment of the present invention. The AMF 30 may have a functional configuration similar to that of the base station 10.

[0085] The transmitting unit 110 includes the function of generating a signal to be transmitted to the terminal 20 or other network node and transmitting the signal by wire or wireless. The receiving unit 120 includes the function of receiving various signals transmitted from the terminal 20 or other network node and obtaining information from the received signal, for example, higher layer information. A communication unit including the transmitting unit 110 and the receiving unit 120 may be configured. The transmitting unit and the receiving unit may be called a transmitter and a receiver, respectively.

[0086] The setting unit 130 stores pre-configured setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads it from the storage device as needed.

[0087] The control unit 140 performs the processing described in the embodiment. The control unit 140 also performs processing related to communication with the terminal 20. The signal transmission function in the control unit 140 may be included in the transmission unit 110, and the signal reception function in the control unit 140 may be included in the reception unit 120.

[0088] <Terminal 20> Figure 13 shows an example of the functional configuration of terminal 20. As shown in Figure 13, 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 Figure 13 is merely an example. Any functional classification and functional unit names are acceptable as long as they enable the operation according to the embodiment of the present invention.

[0089] The transmitting unit 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly. The receiving unit 220 wirelessly receives various signals and obtains signals from higher layers from the received physical layer signals. The receiving unit 220 also has the function of receiving control signals or reference signals transmitted from the base station 10. A communication unit including the transmitting unit 210 and the receiving unit 220 may be configured. The transmitting unit and the receiving unit may be called a transmitter and a receiver, respectively.

[0090] The setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220 in its storage device and reads it from the storage device as needed. The setting unit 230 also stores pre-configured setting information.

[0091] The control unit 240 performs the processing described in the embodiment. The signal transmission function in the control unit 240 may be included in the transmission unit 210, and the signal reception function in the control unit 240 may be included in the reception unit 220.

[0092] (Hardware configuration) The block diagrams (Figures 12 and 13) used in the description of the above embodiments show functional units. 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 one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may be realized by combining the above one device or the above multiple devices with software.

[0093] Functions include, but are not limited to, judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, assumption, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission is called a transmitting unit or transmitter. As mentioned above, the method of implementation is not particularly limited.

[0094] For example, the base station 10, AMF 30, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 14 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 according to one embodiment of the present disclosure. The AMF 30 may have a hardware configuration similar to that of the base station 10. The above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0095] In the following explanation, the term "device" can be replaced with "circuit," "device," "unit," etc. The hardware configuration of the base station 10 and terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0096] Each function in the base station 10 and terminal 20 is realized by loading predetermined software (programs) onto hardware such as the processor 1001 and storage device 1002, which allows the processor 1001 to perform calculations, control communication by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and auxiliary storage device 1003.

[0097] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may consist of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, the control unit 140, control unit 240, etc., described above may be implemented by the processor 1001.

[0098] Furthermore, the processor 1001 reads programs (program code), software modules, or data from at least one of the auxiliary storage device 1003 and the communication device 1004 into the storage device 1002, and executes various processes accordingly. The program used is one that causes a computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 140 of the base station 10 shown in Figure 12 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Also, for example, the control unit 240 of the terminal 20 shown in Figure 13 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above processes have been described as being executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may be implemented by one or more chips. The program may be transmitted from the network via a telecommunications line.

[0099] The storage device 1002 is a computer-readable recording medium and may consist of at least one of the following: ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. The storage device 1002 may also be called a register, cache, main memory, etc. The storage device 1002 can store executable programs (program code), software modules, etc., for implementing a communication method according to one embodiment of this disclosure.

[0100] The auxiliary storage device 1003 is a computer-readable recording medium and may consist of at least one of the following: an optical disc such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disc, a digital multipurpose disc, a Blu-ray® disc), a smart card, flash memory (e.g., a card, a stick, a key drive), a floppy® disk, a magnetic strip, etc. The above-mentioned storage medium may also be a database, server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.

[0101] The communication device 1004 is hardware (transceiver / receiver device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may include high-frequency switches, duplexers, filters, frequency synthesizers, etc., to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the transmit / receive antenna, amplifier section, transmit / receive section, transmission path interface, etc., may be implemented by the communication device 1004. The transmit / receive section may be implemented with physically or logically separated transmitting and receiving sections.

[0102] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, LED lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0103] 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 different buses may be configured for each device.

[0104] Furthermore, the base station 10 and terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array), and some or all of each functional block may be realized by such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0105] Figure 15 shows an example of the configuration of vehicle 2001. As shown in Figure 8, vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013. Each aspect / embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, to the communication module 2013. That is, the communication module 2013 may include a terminal 20, a base station 10, or an AMF 30.

[0106] The drive unit 2002 consists of, for example, an engine, a motor, or a hybrid of an engine and a motor. The steering unit 2003 includes at least a steering wheel (also called a 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, which is operated by the user.

[0107] The electronic control unit 2010 consists of a microprocessor 2031, memory (ROM, RAM) 2032, and communication ports (IO ports) 2033. Signals from various sensors 2021 to 2029 installed in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).

[0108] Signals from various sensors 2021-2029 include current signals from current sensor 2021 which senses motor current, front and rear wheel rotation speed signals obtained by rotation speed sensor 2022, front and rear wheel air pressure signals obtained by air pressure sensor 2023, vehicle speed signals obtained by vehicle speed sensor 2024, acceleration signals obtained by acceleration sensor 2025, accelerator pedal depression signals obtained by accelerator pedal sensor 2029, brake pedal depression signals obtained by brake pedal sensor 2026, shift lever operation signals obtained by shift lever sensor 2027, and detection signals obtained by object detection sensor 2028 for detecting obstacles, vehicles, pedestrians, etc.

[0109] The Information Services Unit 2012 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, television, and radio, and one or more ECUs that control these devices. The Information Services Unit 2012 uses information acquired from external devices via a communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001. The Information Services Unit 2012 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) and output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0110] The driver assistance system unit 2030 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, such as millimeter-wave radar, LiDAR (Light Detection and Ranging), cameras, positioning locators (e.g., GNSS), map information (e.g., high-definition (HD) maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 2030 also sends and receives various information via the communication module 2013 to realize driver assistance functions or autonomous driving functions.

[0111] The communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via its communication port. For example, the communication module 2013 sends and receives data via its communication port 2033 to the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, the microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021-29 provided in the vehicle 2001.

[0112] 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 external devices. For example, it can send and receive various types of information to and from external devices 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 or a mobile station.

[0113] The communication module 2013 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 2021-2028 input to the electronic control unit 2010, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 2012. The electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above input.

[0114] The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001. The information service unit 2012 may also be called an output unit, which outputs information (for example, outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 2013). The communication module 2013 also stores the various information received from the external device in memory 2032, which is available to the microprocessor 2031. Based on the information stored in 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, axles 2009, sensors 2021-2029, etc., provided in the vehicle 2001.

[0115] This specification discloses at least the configurations described in the following appendix.

[0116] <Note> (Additional note 1) It is a terminal, A receiving unit that receives a list of partition correspondence information, in which key values ​​and partitions are associated, from a network node via a base station. Based on the aforementioned list, a control unit determines the area including the location of the terminal and obtains a key value corresponding to that area. A terminal equipped with the following features. (Additional note 2) When the receiving unit receives system information from the base station, including an identifier indicating an NTN wide-area cell, the control unit performs the acquisition of the key value. The terminals listed in Appendix 1. (Additional note 3) The receiving unit receives earthquake early warning information containing one or more key values ​​from the base station. The control unit performs an action corresponding to the earthquake early warning information if one or more key values ​​received by the receiving unit include a key value corresponding to the location of the terminal. The terminals listed in Appendix 1. (Additional note 4) The receiving unit receives access restriction information, which includes one or more key values, from the base station. The control unit performs an access restriction operation applying the access restriction information if one or more key values ​​received by the receiving unit include a key value corresponding to the location of the terminal. The terminals listed in Appendix 1. (Additional note 5) A receiving unit that receives a message from a terminal via a base station requesting a list of partition correspondence information in which key values ​​and partitions are associated, A control unit that estimates the approximate location of the terminal from the identifier of the base station and obtains a list of area correspondence information relating to the area covering the location and its surroundings, A transmitting unit that transmits a response message including the list to the terminal via the base station. A network node equipped with the following features. (Additional note 6) A communication method performed by a terminal, The steps include receiving a list of partition correspondence information, in which key values ​​are associated with partitions, from a network node via a base station, Based on the aforementioned list, the steps include determining the area containing the location of the terminal and obtaining the key value corresponding to that area. A communication method that includes the following features.

[0117] According to any of the appendices 1 to 6, technology is provided for performing geographically granular processing in the area covered by NTN. According to appendice 2, a terminal can acquire key values ​​when it recognizes that it is located within an NTN wide-area cell. According to appendice 3, a terminal can perform actions that appropriately respond to earthquake early warning information. According to appendice 4, a terminal can perform access restriction actions that appropriately apply access restriction information.

[0118] (Supplement to the embodiment) While 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, substitutions, etc. Specific numerical examples have been used to facilitate understanding of the invention, but 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, and matters described in two or more items may be combined as needed, and matters described in one item may be applied to matters described in another item (as long as they do not contradict each other). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical parts. The operation of multiple functional units may be physically performed by one part, or the operation of one functional unit may be physically performed by multiple parts. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as it does not contradict each other. For the convenience of explaining the processing, the base station 10 and terminal 20 have been described using functional block diagrams, but such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the base station 10 according to an embodiment of the present invention and the software operated by the processor of the terminal 20 according to an embodiment of the present invention may 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.

[0119] Furthermore, the notification of information is not limited to the embodiments / models described herein and may be carried out by other methods. For example, the notification of information may be carried out by physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling), broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or combinations thereof. Also, RRC signaling may be called RRC messages, and may be, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc.

[0120] Each aspect / embodiment described in this disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (where x is, for example, an integer or decimal)), FRA (Future Radio Access), NR (new Radio), New radio access (NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), and IEEE This may apply to at least one system utilizing 802.20, UWB (Ultra-WideBand), Bluetooth®, or other appropriate systems, and to next-generation systems extended, modified, created, or defined based thereon. It may also apply to a combination of multiple systems (for example, a combination of at least one of LTE and LTE-A with 5G).

[0121] The processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described herein may be reordered, provided they are consistent with each other. For example, the methods described herein present various step elements in an exemplary order and are not limited to that specific order.

[0122] In this specification, specific operations performed by the base station 10 may, in some cases, be performed by its upper node. In a network consisting of one or more network nodes having a base station 10, it is clear that various operations performed for communication with the terminal 20 can be performed by the base station 10 and at least one of the other network nodes (for example, an MME or S-GW, but not limited to these). Although the above example illustrates the case where there is one other network node besides the base station 10, the other network node may be a combination of multiple other network nodes (for example, an MME and an S-GW).

[0123] The information or signals described in this disclosure may be output from a higher layer (or lower layer) to a lower layer (or higher layer). They may also be input and output via multiple network nodes.

[0124] Input and output information may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information may be overwritten, updated, or appended to. Output information may be deleted. Input information may be transmitted to other devices.

[0125] The determination in this disclosure may be made by a value represented by one bit (0 or 1), by a boolean value (true or false), or by a numerical comparison (for example, a comparison with a predetermined value).

[0126] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0127] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or digital subscriber line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0128] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0129] In addition, terms used 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 the channel and symbol may be a signal (signaling). Also, a signal may be a message. Furthermore, a component carrier (CC) may be called a carrier frequency, cell, frequency carrier, etc.

[0130] The terms “system” and “network” as used in this disclosure are interchangeable.

[0131] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a given value, or other corresponding information. For example, wireless resources may be indicated by an index.

[0132] The names used for the parameters described above are not restrictive in any way. Furthermore, the formulas and other expressions using these parameters may differ from those expressly disclosed in this disclosure. Various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0133] In this disclosure, terms such as "base station (BS)", "wireless base station", "base station equipment", "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.

[0134] A base station can house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station can be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a Remote Radio Head (RRH)). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0135] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform information-based control or operation.

[0136] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0137] 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 several other appropriate terms.

[0138] At least one of the base station, mobile station, and AMF may be called a transmitting device, receiving device, communication device, etc. At least one of the base station, mobile station, and AMF may also be a device mounted on a mobile body, the mobile body itself, etc. The mobile body refers to a movable object, and its speed of movement is arbitrary. This also includes the case when the mobile body is stationary. The mobile body includes, but is not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones (registered trademark), multicopters, quadcopters, balloons, and items mounted on them. The mobile body may also be a mobile body that moves autonomously based on operation commands. The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station, mobile station, and AMF may include devices that do not necessarily move during communication operations. For example, at least one of the base station and mobile station may be an IoT (Internet of Things) device such as a sensor.

[0139] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). In this case, the terminals 20 may have the functions that the base station 10 has. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "side"). For example, uplink channel, downlink channel, etc., may be interpreted as side channel.

[0140] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station may be configured to have the same functions as the user terminal described above.

[0141] As used in this disclosure, the terms “determining” and “determining” may encompass a wide variety of actions. “Determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiry (e.g., searching in a table, database, or other data structure), and ascertaining. “Determining” may also include, for example, receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and accessing (e.g., accessing data in memory). Furthermore, "judgment" and "decision" can include considering something as having been "judged" or "decided" after resolving, selecting, choosing, establishing, comparing, etc. In other words, "judgment" and "decision" can include considering something as having been "judged" or "decided" after some action. Also, "judgment (decision)" can be reinterpreted as "assuming," "expecting," or "considering."

[0142] The terms “connected,” “coupled,” or any variation thereof, mean 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” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be reinterpreted as “access.” As used in this disclosure, two elements may be considered to be “connected” or “coupled” with each other using at least one of one or more wires, cables, and printed electrical connections, and, in some non-limiting and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0143] The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applicable standard.

[0144] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0145] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, references to the first and second elements do not imply that only two elements may be employed, or that the first element must precede the second element in any way.

[0146] In the configuration of each of the above devices, "means" may be replaced with "part," "circuit," "device," etc.

[0147] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0148] In this disclosure, if articles are added through translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0149] In this 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 "combine" may be interpreted similarly to "different."

[0150] Each aspect / embodiment described herein may be used individually, in combination, or switched between as needed during implementation. Furthermore, notification of specific information (e.g., notification that "X is") is not limited to explicit notification, but may also be implicit (e.g., by not providing such notification).

[0151] Although the present disclosure has been described in detail above, it will be clear to those skilled in the art that the present disclosure is not limited to the embodiments described herein. The present disclosure can be implemented in modified and altered forms without departing from the intent and scope of the present disclosure as defined by the claims. Therefore, the descriptions in the present disclosure are illustrative and not intended to be restrictive in any way. [Explanation of Symbols]

[0152] 10 base station 110 Transmitter 120 Receiver 130 Setting section 140 Control Unit 20 devices 210 Transmitter 220 Receiver 230 Setting section 240 Control Unit 30 AMF 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive Unit 2003 Steering Department 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 Rotation speed sensor 2023 Pneumatic Sensor 2024 Vehicle Speed ​​Sensor 2025 Accelerometer 2026 Brake Pedal Sensor 2027 Shift lever sensor 2028 Object Detection Sensor 2029 Accelerator pedal sensor 2030 Driver Support Systems Department 2031 Microprocessor 2032 memory (ROM, RAM) 2033 Communication port (I / O port)

Claims

1. It is a terminal, A receiving unit that receives a list of partition correspondence information, in which key values ​​and partitions are associated, from a network node via a base station. Based on the aforementioned list, a control unit determines the area including the location of the terminal and obtains a key value corresponding to that area. A terminal equipped with the following features.

2. When the receiving unit receives system information from the base station that includes an identifier indicating an NTN wide-area cell, the control unit performs the acquisition of the key value. The terminal according to claim 1.

3. The receiving unit receives earthquake early warning information containing one or more key values ​​from the base station. The control unit performs an action corresponding to the earthquake early warning information if one or more key values ​​received by the receiving unit include a key value corresponding to the location of the terminal. The terminal according to claim 1.

4. The receiving unit receives access restriction information, which includes one or more key values, from the base station. The control unit performs an access restriction operation applying the access restriction information if one or more key values ​​received by the receiving unit include a key value corresponding to the location of the terminal. The terminal according to claim 1.

5. A receiving unit that receives a message from a terminal via a base station requesting a list of partition correspondence information in which key values ​​and partitions are associated, A control unit that estimates the approximate location of the terminal from the identifier of the base station and obtains a list of area correspondence information relating to the area covering the location and its surroundings, A transmitting unit that transmits a response message including the list to the terminal via the base station. A network node equipped with the following features.

6. A communication method performed by a terminal, The steps include receiving a list of partition correspondence information, in which key values ​​are associated with partitions, from a network node via a base station, Based on the aforementioned list, the steps include determining the area containing the location of the terminal and obtaining the key value corresponding to that area. A communication method that includes the following features.

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