WO2023275998A1

WO2023275998A1 - Terminal, network node, and communication method

Info

Publication number: WO2023275998A1
Application number: PCT/JP2021/024569
Authority: WO
Inventors: 淳巳之口; 真央樹彦坂; 政宏澤田; 敬浩青木
Original assignee: 株式会社Ｎｔｔドコモ
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2023-01-05
Also published as: CN117397302A

Abstract

This terminal comprises a universal subscriber identity module (USIM). The USIM has a reception unit that receives global navigation satellite system (GNSS) input information from the terminal; a control unit that calculates self-position information on the basis of the GNSS input information; and a transmission unit that transmits to a network node the GNSS input information and the position information concealed by a public key of the network node and signed with a secret key of the USIM.

Description

Terminal, network node and communication method

The present invention relates to terminals, network nodes and communication methods in communication systems.

In the 3GPP (3rd Generation Partnership Project), 5G or NR (New Radio) and NR (New Radio) are being used in order to further increase the system capacity, further increase the data transmission speed, and further reduce the delay in the wireless section. A wireless communication system called "5G" (hereinafter, the wireless communication system is referred to as "5G" or "NR") is under study. In 5G, various radio technologies are being studied in order to meet the requirements of realizing a throughput of 10 Gbps or more and keeping the delay in the radio section to 1 ms or less.

In NR, 5GC (5G Core Network) corresponding to EPC (Evolved Packet Core) which is the core network in LTE (Long Term Evolution) network architecture and E-UTRAN (RAN (Radio Access Network) in LTE network architecture ( A network architecture including NG-RAN (Next Generation-Radio Access Network) corresponding to Evolved Universal Terrestrial Radio Access Network) is under consideration (for example, Non-Patent Document 1).

Also, NTN (Non-Terrestrial Network) is currently under consideration (for example, Non-Patent Document 2). NTN uses non-terrestrial networks such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks mainly due to cost.

For example, in NTN, which uses satellite communications, the area of each cell or beam is much wider than that of a terrestrial network (Terrestrial Network, TN), and multiple countries can be in service at the same time. As such, a terminal geographically located in one country may be connected to a core network in another country. When a terminal is connected to a core network in another country, it may not meet the laws and regulations of the country where the terminal is located, so the network needs to acquire the terminal's location information accurately.

The present invention has been made in view of the above points, and an object of the present invention is to enable a network to accurately acquire terminal location information.

According to the disclosed technique, a terminal including a USIM (Universal Subscriber Identity Module), the USIM includes a receiving unit that receives GNSS (Global navigation satellite system) input information from the terminal, and a receiving unit that receives the GNSS input information. a control unit for calculating location information of the device itself; and a transmission unit for transmitting to the network node the location information and the GNSS input information concealed with the public key of the network node and signed with the private key of the USIM. A terminal having a terminal is provided.

According to the disclosed technology, the network can accurately acquire terminal location information.

It is a figure which shows the example (1) of NTN. It is a figure which shows the example (2) of NTN. 1 is a diagram for explaining an example of a network; FIG. 1 is a diagram for explaining an example of a network in a roaming environment; FIG. FIG. 2 is a diagram for explaining an example of an environment according to an embodiment of the present invention; FIG. FIG. 4 is a sequence diagram for explaining an example of operations related to position information according to the embodiment of the present invention; 4 is a flowchart for explaining an example (1) of registration operation in the embodiment of the present invention; 9 is a flow chart for explaining example (2) of registration operation in the embodiment of the present invention. It is a figure showing an example of functional composition of base station 10 in an embodiment of the invention. 2 is a diagram showing an example of the functional configuration of terminal 20 according to the embodiment of the present invention; FIG. 2 is a diagram showing an example of hardware configurations of base station 10 and terminal 20 according to an embodiment of the present invention; FIG.

Embodiments of the present invention will be described below with reference to the drawings. In addition, the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

Existing technologies are appropriately used for the operation of the wireless communication system according to the embodiment of the present invention. However, the existing technology is, for example, existing LTE, but is not limited to existing LTE. In addition, the term "LTE" used in this specification, unless otherwise specified, has a broad meaning including LTE-Advanced and LTE-Advanced and later systems (eg: NR), or wireless LAN (Local Area Network). shall have

Further, in the embodiment of the present invention, "configuring" the wireless parameters and the like may mean that predetermined values are set in advance (pre-configure), or the network node 30 or A wireless parameter notified from the terminal 20 may be set.

FIG. 1 is a diagram showing an example (1) of NTN. NTN (Non-Terrestrial Network) uses non-terrestrial networks such as satellites to provide services to areas that cannot be covered by terrestrial 5G networks mainly in terms of cost. NTN can provide more reliable service. For example, it is assumed to be applied to IoT (Inter of things), ships, buses, trains, and critical communications. NTN also has scalability through efficient multicast or broadcast.

As an example of an NTN, as shown in FIG. 1, a satellite 10A retransmits a signal transmitted from a terrestrial base station 10B to provide service to an area where no terrestrial base station is deployed, such as mountainous areas. can be done.

Note that the terrestrial 5G network may be configured as described below. A 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 wirelessly communicates with the terminal 20 . A physical resource of a radio signal is 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 resource blocks. The base station 10 transmits synchronization signals and system information to the terminal 20 . Synchronization signals are, for example, NR-PSS and NR-SSS. The system information is transmitted by, for example, NR-PBCH, and is also called broadcast information.

The base station 10 transmits control signals or data to the terminal 20 on DL (Downlink), and receives control signals or data from the terminal 20 on UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Also, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Also, both the base station 10 and the terminal 20 may communicate via SCell (Secondary Cell) and PCell (Primary Cell) by CA (Carrier Aggregation).

The terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. The terminal 20 receives a control signal or data from the base station 10 on the DL and transmits the control signal or data to the base station 10 on the UL, thereby using various communication services provided by the wireless communication system.

FIG. 2 is a diagram showing an example (2) of NTN. The area per cell or beam in NTN is very large compared to terrestrial networks (Terrestrial Network, TN). FIG. 2 shows an example of an NTN composed of retransmissions by satellite. The connection between satellite 10A and NTN gateway 10B is called a feeder link, and the connection between satellite 10A and UE 20 is called a service link.

As shown in FIG. 2, the difference in delay between the near side UE 20A and the far side UE 20B is, for example, 10.3 ms for Geosynchronous orbit (GEO). , 3.2 ms in the case of LEO (Low Earth orbit). Also, the beam size in NTN is, for example, 3500 km for GEO and 1000 km for LEO.

FIG. 3 is a diagram for explaining an example of a network. As shown in FIG. 3, the communication system consists of a UE, which is a terminal 20, and a plurality of network nodes 30. FIG. Hereinafter, one network node 30 corresponds to each function, but one network node 30 may realize a plurality of functions, or a plurality of network nodes 30 may realize one function. . Also, the "connection" described below may be a logical connection or a physical connection.

A RAN (Radio Access Network) is a network node 30 having a radio access function, may include a base station 10, and is connected with a UE, an AMF (Access and Mobility Management Function) and a UPF (User plane function). The AMF is a network node 30 having functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management. The UPF is a network node 30 that has functions such as a PDU (Protocol Data Unit) session point to the outside that interconnects with a DN (Data Network), packet routing and forwarding, and user plane QoS (Quality of Service) handling. UPF and DN constitute a network slice. A plurality of network slices are constructed in the wireless communication network according to the embodiment of the present invention.

AMF is UE, RAN, 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) are connected. AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF are interconnected via respective service-based interfaces Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, Naf. network node 30 .

The SMF is a network node 30 that has functions such as session management, UE IP (Internet Protocol) address allocation and management, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function. A NEF is a network node 30 that has the function of notifying other NFs (Network Functions) of capabilities and events. NSSF selects the network slice to which the UE connects, determines the allowed NSSAI (Network Slice Selection Assistance Information), determines the NSSAI to be set, determines the AMF set to which the UE connects. be. A PCF is a network node 30 having a function of performing network policy control. AF is a network node 30 having the function of controlling an application server. An NRF is a network node 30 that has the ability to discover NF instances that provide services. A UDM is a network node 30 that manages subscriber data and authentication data. The UDM is connected to a UDR (Unified Data Repository) that holds the data.

FIG. 3 is a diagram for explaining an example of a network in a roaming environment. As shown in FIG. 3, the network consists of a UE, which is a terminal 20, and a plurality of network nodes 30. As shown in FIG. Hereinafter, one network node 30 corresponds to each function, but one network node 30 may realize a plurality of functions, or a plurality of network nodes 30 may realize one function. . Also, the "connection" described below may be a logical connection or a physical connection.

RAN is a network node 30 with radio access functionality and is connected with UE, AMF and UPF. The AMF is a network node 30 having functions such as RAN interface termination, NAS termination, registration management, connection management, reachability management, and mobility management. A UPF is a network node 30 that has functions such as PDU session point to the outside world interconnecting DNs, packet routing and forwarding, user plane QoS handling, and so on. UPF and DN constitute a network slice. A plurality of network slices are constructed in the wireless communication network according to the embodiment of the present invention.

AMF is connected to UE, RAN, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF, and SEPP (Security Edge Protection Proxy). AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF are interconnected via respective service-based interfaces Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, Naf. network node 30 .

The SMF is a network node 30 that has functions such as session management, UE IP address allocation and management, DHCP function, ARP proxy, roaming function, and the like. A NEF is a network node 30 that has the function of notifying other NFs of capabilities and events. The NSSF is a network node 30 that has functions such as selecting a network slice to which the UE connects, determining allowed NSSAIs, determining configured NSSAIs, determining the AMF set to which the UE connects, and so on. A PCF is a network node 30 having a function of performing network policy control. AF is a network node 30 having the function of controlling an application server. An NRF is a network node 30 that has the ability to discover NF instances that provide services. SEPP is a non-transparent proxy that filters control plane messages between PLMNs (Public Land Mobile Networks). The vSEPP shown in FIG. 3 is the SEPP in the visited network, and the hSEPP is the SEPP in the home network.

As shown in FIG. 3, the UE is in a roaming environment connected with RAN and AMF in VPLMN (Visited PLMN). VPLMN and HPLMN (Home PLMN) are connected via vSEPP and hSEPP. The UE can, for example, communicate with the HPLMN's UDM via the VPLMN's AMF.

FIG. 5 is a diagram for explaining an example environment in the embodiment of the present invention. Satellite communication, High Altitude Platform Station (HAPS), Mobile Integrated Access and Backhaul (IAB) are important components of 5G development and 6G. For example, as shown in FIG. 5, NTN by satellite communication is assumed. Satellite 10 covers A country and B country. Here, 1) and 2) shown below are important.

1) How the network obtains reliable terminal location information. Networks need to handle emergency calls, wiretapping and billing appropriately based on reliable terminal location information.
2) Terminals need to switch core networks when crossing national borders. The network can switch the core network by the terminal invoking the mobile registration procedure at the border.

In order to solve 1) and 2) above, for example, after the registration procedure, the network does not have to provide services until confirmation of the terminal location is completed. AMF initiates the 5GC-NI-LR (Network Induced Location Request) procedure. In the UE positioning of this procedure, the UE-assisted A-GNSS (Assisted-Global navigation satellite system) method is carried out between the UE and LMF (Location Management Function). The AMF maps the terminal position obtained by the procedure on the map. When the AMF determines that the terminal is located in an area that the AMF cannot handle, it deregisters the terminal. AMF will then periodically trigger the 5GC-NI-LR procedure. Here, there is an assumption that the terminal forwards the GNSS input information to the network without modification.

However, the periodic calls from the network required by the above method consume radio resources. In addition, the above method is only an approximate correspondence with respect to the above 2). Furthermore, the authenticity of the GNSS input information that the terminal sends to the network is not guaranteed. Furthermore, it takes about 10 seconds to calculate the terminal position on the network side, which is long compared to the several seconds that the terminal takes to calculate the position. It should be noted that although it is possible for the terminal to perform location calculations during the registration procedure, the current specification does not allow the network to trust the location information calculated by the terminal.

Therefore, a method may be adopted in which position calculation is performed by USIM (Universal Subscriber Identity Module) under the control of HPLMN. The USIM performs the location calculation internally, hides the location information and adds a signature. The USIM sends the signed and hidden location information to the network via the terminal. Public key cryptography is used so that it can also be used for registration requests prior to the authentication procedure. Additionally, procedures may be performed to validate GNSS input information.

FIG. 6 is a sequence diagram for explaining an example of operations related to position information according to the embodiment of the present invention. In step S11, in the UE 20, the USIM calculates location information based on the GNSS input information. The USIM has inside it the GNSS calculation logic, its own private key and the public key of the NW node 10 (eg satellite ground station). The NW node 10 internally has its own private key and the HPLMN-signed public key of each USIM. In addition, UE20 may transmit GNSS input information to USIM.

The USIM conceals the result calculated using the GNSS calculation logic, that is, the location information of its own device and the GNSS input information used for the calculation with the public key of the NW node 10 . The USIM signs the hidden location information and GNSS input information with its own private key. In step S<b>12 , the USIM transmits the signed and confidential location information and GNSS input information to the NW node 10 via the UE 20 .

The NW node 10 verifies the signature with the corresponding USIM public key. The NW node 10 decrypts the location information and GNSS input information with its own private key. The NW node 10 and core network proceed with processing using the location information. In step S13, the NW node 10 transmits the location information and GNSS input information to the AMF 30A.

In step S14, the AMF 30A transmits the location information and GNSS input information to the AI processing node 30C. In step S15, the AI processing node 30C verifies the validity of the location information and GNSS input information. The verification method may be an implementation-dependent method. Note that the AI processing node 30C may have another name. When the AI processing node 30C determines that the GNSS input information is not valid, it transmits the verification result to the AMF 30A and OAM (Operation Administration and Maintenance) 30B (S16, S17). The verification result may include information indicating that the GNSS input information is invalid. Also when the AI processing node 30C determines that the GNSS input information is valid, the AI processing node 30C may transmit a verification result indicating validity to the AMF 30 or OAM 30B. The execution order of steps S16 and S17 does not matter.

In step S18, the OAM 30B records the PEI (Permanent Equipment Identifier) corresponding to the UE 20 in the 5G-EIR (5G-Equipment Identity Register), and checks the corresponding subscriber information in association with the GNSS input information abnormality. The subscriber information may be recorded in association with the number of GNSS input information anomalies. In step S19, the AMF transmits a deregistration request (Deregister) to the UE20 to deregister the UE20. The execution order of steps S18 and S19 does not matter.

FIG. 7 is a flow chart for explaining example (1) of the registration operation according to the embodiment of the present invention. FIG. 7 shows the operation of the AMF after executing the sequence shown in FIG. At step S21, the AMF receives a registration request from the UE. In subsequent step S22, the AMF determines whether the PEI of the registration request is the recorded PEI. If it is a recorded PEI (YES in S22), the process proceeds to step S23, and if it is not a recorded PEI (NO in S22), the process proceeds to step S24. At step S23, the AMF rejects the registration request. On the other hand, in step S24, the AMF approves the registration request.

FIG. 8 is a flowchart for explaining example (2) of the registration operation according to the embodiment of the present invention. FIG. 8 shows the operation of the AMF after executing the sequence shown in FIG.

At step S31, the AMF receives a registration request from the UE. In subsequent step S22, the AMF determines whether or not the GNSS input information abnormality due to the subscriber information of the registration request is equal to or greater than the set number of times. If it is equal to or greater than the set number of times (YES in S32), the process proceeds to step S33, and if it is less than the set number of times (NO in S32), the process proceeds to step S34. At step S33, the AMF rejects the registration request. On the other hand, in step S34, the AMF approves the registration request.

Note that at least one of the flowcharts of FIGS. 7 and 8 may be executed, and if the registration request is permitted in both the flowcharts of FIGS. 7 and 8, the registration request of the UE may be permitted.

In addition, the HPLMN may use the existing SoR (Steering of Roaming) procedure or the existing UPU (UE Parameters Update) procedure to set or update the GNSS calculation logic in the USIM and the public key of the NW node. may The USIM may also use existing Generic Authentication Architecture (GAA)/Generic Bootstrapping Architecture (GBA) procedures to obtain the HPLMN's signature on the public key corresponding to its private key. The USIM may generate its own private key by itself.

With the above-described embodiment, the network can obtain reliable terminal location information. Mobile communication carriers can operate their networks without worrying about an increase in radio resource usage and violation of communication interception regulations. Also, the network can verify that the terminal is not reporting false location information by tampering with the GNSS input. Also, compared to the method in which the network calculates the terminal location information, the time to determine the location information is shortened.

In other words, the network can accurately acquire the location information of the terminal.

(Device configuration)
Next, functional configuration examples of the base station 10, the network node 30, and the terminal 20 that perform the processes and operations described above will be described. The base station 10, network node 30 and terminal 20 include functionality to implement the embodiments described above. However, each of the base station 10, network node 30, and terminal 20 may have only part of the functions in the embodiments.

<Base station 10 and network node 30>
FIG. 9 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. As shown in FIG. 9, the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140. The functional configuration shown in FIG. 9 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary. Note that the network node 30 may have a functional configuration similar to that of the base station 10 . Also, the network node 30 having multiple different functions on the system architecture may be composed of multiple network nodes 30 separated for each function.

The transmission unit 110 includes a function of generating a signal to be transmitted to the terminal 20 or another network node 30 and transmitting the signal by wire or wirelessly. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 or other network nodes 30 and acquiring, for example, higher layer information from the received signals.

The setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads them from the storage device as necessary. The contents of the setting information are, for example, settings related to communication using NTN.

The control unit 140 performs processing related to communication using NTN, as described in the embodiment. Also, the control unit 140 performs processing related to communication with the terminal 20 . In addition, the control unit 140 performs processing related to geographic position verification of the terminal 20 . A functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 .

<Terminal 20>
FIG. 10 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. As shown in FIG. 10, the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240. The functional configuration shown in FIG. 10 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary. The USIM worn by the terminal 20 may have a transmitting section 210 , a receiving section 220 , a setting section 230 , and a control section 240 similarly to the terminal 20 .

The transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. The receiving unit 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, etc. transmitted from the network node 30 .

The setting unit 230 stores various types of setting information received from the network node 30 by the receiving unit 220 in the storage device, and reads them from the storage device as necessary. The setting unit 230 also stores preset setting information. The contents of the setting information are, for example, settings related to communication using NTN.

The control unit 240 performs processing related to connection control to networks and network slices, as described in the embodiments. A functional unit related to signal transmission in control unit 240 may be included in transmitting unit 210 , and a functional unit related to signal reception in control unit 240 may be included in receiving unit 220 .

(Hardware configuration)
The block diagrams (FIGS. 9 and 10) used to describe the above embodiments show blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Also, the method of implementing each functional block is not particularly limited. That is, each functional block may be implemented using one device that is physically or logically coupled, or directly or indirectly using two or more devices that are physically or logically separated (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices. A functional block may be implemented by combining software in the one device or the plurality of devices.

Functions include judging, determining, determining, calculating, calculating, processing, deriving, investigating, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc. can't For example, a functional block (component) that performs transmission is called a transmitting unit or transmitter. In either case, as described above, the implementation method is not particularly limited.

For example, the network node 30, the terminal 20, etc. according to the embodiment of the present disclosure may function as computers that perform processing of the wireless communication method of the present disclosure. FIG. 11 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The network node 30 may have hardware configuration similar to that of the base station 10 . USIM may have the same hardware configuration as terminal 20 . The base station 10 and terminal 20 described above are 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, and the like. good too.

In the following explanation, the term "apparatus" can be read as a circuit, device, unit, or the like. The hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.

Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .

The processor 1001, for example, operates an operating system and controls the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, registers, and the like. For example, the control unit 140 , the control unit 240 and the like described above may be implemented by the processor 1001 .

In addition, 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 to the storage device 1002, and executes various processes according to them. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. For example, control unit 140 of base station 10 shown in FIG. 9 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 . Also, for example, the control unit 240 of the terminal 20 shown in FIG. Although it has been explained that the above-described various processes are executed by one processor 1001, they may be executed simultaneously or sequentially by two or more processors 1001. FIG. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.

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

The auxiliary storage device 1003 is a computer-readable recording medium, for example, an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like. The storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary storage device 1003 .

The communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also called a network device, a network controller, a network card, a communication module, or the like. The communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., in order to realize at least one of, for example, frequency division duplex (FDD) and time division duplex (TDD). may consist of For example, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission line interface, etc. may be implemented by the communication device 1004 . The transceiver may be physically or logically separate implementations for the transmitter and receiver.

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

Each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between devices.

In addition, the base station 10 and the terminal 20 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware. For example, processor 1001 may be implemented using at least one of these pieces of hardware.

The USIM may be internally implemented with hardware that implements GNSS calculation logic, or internally with hardware that holds its own private key and the public key of the NW node 10 (for example, a satellite ground station). good too.

(Summary of embodiment)
As described above, according to the embodiment of the present invention, a terminal including a USIM (Universal Subscriber Identity Module), the USIM receives GNSS (Global Navigation Satellite System) input information from the terminal a receiving unit, a control unit that calculates the location information of the device based on the GNSS input information, and the location information and the GNSS input information that are confidential with the public key of the network node and signed with the private key of the USIM. and a transmitter for transmitting to the network node.

With the above configuration, the network can obtain reliable terminal location information. Mobile communication carriers can operate their networks without worrying about an increase in radio resource usage and violation of communication interception regulations. Also, the network can verify that the terminal is not reporting false location information by tampering with the GNSS input. Also, compared to the method in which the network calculates the terminal location information, the time to determine the location information is shortened. That is, the network can accurately acquire the location information of the terminal.

Further, according to the embodiment of the present invention, a receiving unit that receives terminal position information and GNSS (Global navigation satellite system) input information used for calculating the terminal position information from a first network node; a transmitter configured to transmit the terminal location information and the GNSS input information to a second network node, the receiver verifying from the second network node that the GNSS input information is invalid. The transmitting unit is provided with a network node for transmitting a deregistration request to the terminal upon receiving a result.

When the receiving unit receives a verification result indicating that the GNSS input information is not valid from the second network node, even if the registration request from the PEI (Permanent Equipment Identifier) corresponding to the terminal is rejected good. This configuration allows the network to reject a registration request from a terminal if the terminal may have reported false location information by tampering with the GNSS input information.

When the number of times the receiving unit receives verification results indicating that the GNSS input information is not valid from the second network node is equal to or greater than a threshold, the registration request from the subscriber information corresponding to the terminal is rejected. You may This configuration allows the network to reject a registration request from a terminal if the terminal may have reported false location information by tampering with the GNSS input information.

Further, according to the embodiment of the present invention, a reception procedure for receiving terminal position information and GNSS (Global navigation satellite system) input information used for calculating the terminal position information from a first network node; A transmission procedure for transmitting the terminal location information and the GNSS input information to a second network node; and sending a deregistration request to a network node.

(Supplement to 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 can understand various modifications, modifications, alternatives, replacements, and the like. be. Although specific numerical examples have been used to facilitate understanding of the invention, these numerical values are merely examples and any appropriate values may be used unless otherwise specified. The division of items in the above description is not essential to the present invention, and the items described in two or more items may be used in combination as necessary, and the items described in one item may be used in another item. may apply (unless inconsistent) to the matters set forth in Boundaries of functional or processing units in functional block diagrams do not necessarily correspond to boundaries of physical components. The operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components. As for the processing procedures described in the embodiments, the processing order may be changed as long as there is no contradiction. Although the network node 30 and terminal 20 have been described using functional block diagrams for convenience of process description, such devices may be implemented in hardware, software, or a combination thereof. The software operated by the processor of the network node 30 according to the embodiment of the invention and the software operated by the processor of the terminal 20 according to the embodiment of the invention are respectively stored in random access memory (RAM), flash memory, read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.

Also, notification of information is not limited to the aspects/embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information includes physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, It may be implemented by broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.In addition, RRC signaling may also be called an RRC message, for example, RRC It may be a connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.

Each aspect/embodiment described in the present 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) system), FRA (Future Radio Access), NR (new Radio), 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 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems and extended It may be applied to at least one of the next generation systems. Also, a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G, etc.).

The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this specification may be changed as long as there is no contradiction. For example, the methods described in this disclosure present elements of the various steps using a sample order, and are not limited to the specific order presented.

A specific operation performed by the network node 30 in this specification may be performed by its upper node in some cases. In a network of one or more network nodes, including network node 30, various operations performed for communication with terminal 20 may be network node 30 and other network nodes other than network node 30 ( (eg, but not limited to MME or S-GW). Although the above example illustrates the case where there is one network node other than the network node 30, the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW). .

Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.

Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.

The determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).

Software, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.

In addition, software, instructions, information, etc. may be transmitted and received via a transmission medium. For example, the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.

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 refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of

The 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, the channel and/or symbols may be signaling. A signal may also be a message. A component carrier (CC) may also be called a carrier frequency, a cell, a frequency carrier, or the like.

The terms "system" and "network" used in this disclosure are used interchangeably.

In addition, 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. may be represented. For example, radio resources may be indexed.

The names used for the parameters described above are not restrictive names in any respect. Further, the formulas, etc., using these parameters may differ from those expressly disclosed in this disclosure. Since the various channels (e.g., PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, the various names assigned to these various channels and information elements are in no way restrictive names. is not.

In the present disclosure, "base station (BS)", "radio base station", "base station device", "fixed station", "NodeB", "eNodeB (eNB)", "gNodeB (gNB)", "access point", "transmission point", "reception point", "transmission/reception point", "cell", "sector", Terms such as "cell group," "carrier," and "component carrier" may be used interchangeably. A base station may also be referred to by terms such as macrocell, small cell, femtocell, picocell, and the like.

A base station can accommodate one or more (eg, three) cells. When a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH: The term "cell" or "sector" refers to part or all of the coverage area of at least one of the base stations and base station subsystems serving communication services in this coverage. point to

In the present disclosure, terms such as "Mobile Station (MS)", "user terminal", "User Equipment (UE)", "terminal", etc. may be used interchangeably. .

A mobile station is defined 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 It may also be called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.

At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like. At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like. The mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.

Also, the base station in the present disclosure may be read as a user terminal. For example, communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.) Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the terminal 20 may have the functions of the network node 30 described above. Also, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be read as side channels.

Similarly, user terminals in the present disclosure may be read as base stations. In this case, the base station may have the functions that the above-described user terminal has.

The terms "determining" and "determining" used in this disclosure may encompass a wide variety of actions. "Judgement" and "determination" are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure), ascertaining as "judged" or "determined", and the like. Also, "judgment" and "determination" are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment" or "decision" has been made. In addition, "judgment" and "decision" are considered to be "judgment" and "decision" by resolving, selecting, choosing, establishing, comparing, etc. can contain. In other words, "judgment" and "decision" may include considering that some action is "judgment" and "decision". Also, "judgment (decision)" may be read as "assuming", "expecting", "considering", or the like.

The terms "connected", "coupled", or any variation thereof, mean any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being "connected" or "coupled." Couplings or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be read as "access". As used in this disclosure, two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.

The reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.

The term "based on" as used in this disclosure does not mean "based only on" unless otherwise specified. In other words, the phrase "based on" means both "based only on" and "based at least on."

Any reference to elements using the "first," "second," etc. designations used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.

"Means" in the configuration of each device described above may be replaced with "unit", "circuit", "device", or the like.

Where "include," "including," and variations thereof are used in this disclosure, these terms are inclusive, as is the term "comprising." is intended. Furthermore, the term "or" as used in this disclosure is not intended to be an exclusive OR.

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

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 that "A and B are different from C". Terms such as "separate," "coupled," etc. may also be interpreted in the same manner as "different."

Each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be used by switching along with execution. In addition, the notification of predetermined information (for example, notification of “being X”) is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.

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 in the present disclosure. The present disclosure can be practiced with modifications and variations without departing from the spirit and scope of the present disclosure as defined by the claims. Accordingly, the description of the present disclosure is for illustrative purposes and is not meant to be limiting in any way.

10 base station 110 transmitting unit 120 receiving unit 130 setting unit 140 control unit 20 terminal 210 transmitting unit 220 receiving unit 230 setting unit 240 control unit 30 network node 1001 processor 1002 storage device 1003 auxiliary storage device 1004 communication device 1005 input device 1006 output device

Claims

A terminal comprising a USIM (Universal Subscriber Identity Module),
The USIM is
A receiving unit that receives GNSS (Global navigation satellite system) input information from the terminal;
Based on the GNSS input information, a control unit that calculates the position information of its own device;
a transmitter for transmitting to the network node the location information and the GNSS input information encrypted with the network node's public key and signed with the USIM's private key.
A receiving unit that receives terminal location information and GNSS (Global Navigation Satellite System) input information used to calculate the terminal location information from a first network node;
a transmitting unit configured to transmit the location information and the GNSS input information to a second network node;
A network node, wherein the transmitting unit transmits a deregistration request to the terminal when the receiving unit receives a verification result from the second network node indicating that the GNSS input information is not valid.
wherein said receiving unit rejects a registration request from a PEI (Permanent Equipment Identifier) corresponding to said terminal when receiving from said second network node a verification result indicating that said GNSS input information is not valid. 2. The network node of claim 2.
When the number of times the receiving unit receives verification results indicating that the GNSS input information is not valid from the second network node is equal to or greater than a threshold, the registration request from the subscriber information corresponding to the terminal is rejected. 3. A network node according to claim 2.
A reception procedure for receiving terminal location information and GNSS (Global Navigation Satellite System) input information used to calculate the terminal location information from a first network node;
a transmission procedure for transmitting the location information and the GNSS input information to a second network node;
sending a deregistration request to the terminal upon receiving a verification result from the second network node indicating that the GNSS input information is not valid.