CN117397302A - Terminal, network node and communication method - Google Patents

Abstract

The terminal has a USIM (Universal Subscriber Identity Module: universal subscriber identity module) with: a receiving unit that receives GNSS (Global navigation satellite system: global navigation satellite system) input information from the terminal; a control unit that calculates position information of the device based on the GNSS input information; and a transmitting unit that transmits the position information and the GNSS input information, which are suppressed by a public key of a network node and signed by a private key of the USIM, to the network node.

Description

Terminal, network node and communication method

Technical Field

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

Background

In 3GPP (3 rd Generation Partnership Project: third generation partnership project), in order to achieve further increase in system capacity, further increase in data transmission speed, further decrease in delay in a Radio section, and the like, a Radio communication system called 5G or NR (New Radio: new air interface) (hereinafter, this Radio communication system is referred to as "5G" or "NR") has been studied. In 5G, various radio technologies are being studied in order to meet the requirement that a throughput (throughput) of 10Gbps or more is achieved and that a delay in a radio section is 1ms or less.

In NR, a network architecture including 5GC (5G Core Network:5G core network) corresponding to EPC (Evolved Packet Core: evolved packet core) which is a core network in network architecture (architecture) of LTE (Long Term Evolution: long term evolution) and NG-RAN (Next Generation-Radio Access Network: next Generation radio access network) corresponding to RAN (Radio Access Network: radio access network) which is E-UTRAN (Evolved Universal Terrestrial Radio Access Network: evolved universal terrestrial radio access network) in network architecture of LTE is being studied (for example, non-patent literature 1).

In addition, there is currently a study on NTN (Non-Terrestrial Network: non-terrestrial network) (for example, non-patent document 2). NTN uses a non-terrestrial network such as a satellite to provide services to areas that are not covered mainly in terms of cost in terrestrial 5G networks.

Prior art literature

Non-patent literature

Non-patent document 1:3GPP TS23.501V16.8.0 (2021-03)

Non-patent document 2:3GPP TR 36.763V0.4.0 (2021-05)

Disclosure of Invention

Problems to be solved by the invention

For example, in NTN using satellite communications, the area of each cell or beam is very wide compared to the terrestrial network (TN: terrestrial Network), and multiple countries may be within the service area at the same time. Thus, a terminal geographically located in a certain country may be connected to the core network of another country. In the case where the terminal is connected to the core network of another country, the regulations of the country in which the terminal is located may not be satisfied, and thus, the network needs to accurately acquire the location information of the terminal.

The present invention has been made in view of the above circumstances, and an object thereof is to accurately acquire position information of a terminal by a network.

Means for solving the problems

According to the disclosed technology, there is provided a terminal having a USIM (Universal Subscriber Identity Module: global subscriber identity module) with: a receiving unit that receives GNSS (Global navigation satellite system: global navigation satellite system) input information from the terminal; a control unit that calculates position information of the device based on the GNSS input information; and a transmitting unit that transmits the position information and the GNSS input information, which are suppressed by a public key of a network node and signed by a private key of the USIM, to the network node.

Effects of the invention

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

Drawings

Fig. 1 is a diagram showing example (1) of NTN.

Fig. 2 is a diagram showing example (2) of NTN.

Fig. 3 is a diagram for explaining an example of a network.

Fig. 4 is a diagram for explaining an example of a network in a roaming environment.

Fig. 5 is a diagram for explaining an example of an environment in the embodiment of the present invention.

Fig. 6 is a timing chart for explaining an example of an operation related to position information in the embodiment of the present invention.

Fig. 7 is a flowchart for explaining example (1) of the registration operation in the embodiment of the present invention.

Fig. 8 is a flowchart for explaining example (2) of the registration operation in the embodiment of the present invention.

Fig. 9 is a diagram showing an example of the functional configuration of the base station 10 according to the embodiment of the present invention.

Fig. 10 is a diagram showing an example of the functional configuration of the terminal 20 according to the embodiment of the present invention.

Fig. 11 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 in the embodiment of the present invention.

Detailed Description

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

The wireless communication system according to the embodiment of the present invention suitably uses the prior art when operating. However, this prior art is, for example, but not limited to, existing LTE. In addition, the term "LTE" as used in this specification has a broad meaning including LTE-Advanced and beyond (e.g., NR) or wireless LAN (Local Area Network: local area network) unless otherwise specified.

In the embodiment of the present invention, the radio parameters such as "configuration" may be preset (Pre-configuration) predetermined values, or radio parameters notified from the network node 30 or the terminal 20 may be set.

Fig. 1 is a diagram showing example (1) of NTN. NTN (Non-Terrestrial Network: non-terrestrial network) uses a Non-terrestrial network such as a satellite to provide services to areas that are not covered mainly in terms of cost in a terrestrial 5G network. With NTN, a service with higher reliability can be provided. For example, applications are envisaged for IoT (internet of things), ships, buses, trains, critical communications. In addition, NTN has scalability based on efficient multicasting or broadcasting.

As an example of NTN, as shown in fig. 1, the satellite 10A can retransmit a signal transmitted from the ground base station 10B, and provide service to an area where the ground base station is not located, such as a mountain area.

The ground 5G network may have the following structure. The terrestrial 5G network comprises 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 by a time domain, which may be defined by the number of OFDM symbols, and a frequency domain, which 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 signals are, for example, NR-PSS and NR-SSS. The system information is transmitted, for example, through NR-PBCH, also called broadcast information.

The base station 10 transmits control signals or data to the terminal 20 through DL (Downlink) and receives control signals or data from the terminal 20 through UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. In addition, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output: multiple input multiple output) based communication to DL or UL. Further, both the base station 10 and the terminal 20 can communicate via a SCell (Secondary Cell) and a PCell (Primary Cell) based on CA (Carrier Aggregation: carrier aggregation).

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

Fig. 2 is a diagram showing example (2) of NTN. The area of each cell or beam in the NTN is very wide compared to the terrestrial network (TN: terrestrial Network). Fig. 2 shows an example of NTN constituted by satellite-based retransmission. The connection between the satellite 10A and the NTN gateway 10B is referred to as a feeder link (feeder link), and the connection between the satellite 10A and the UE 20 is referred to as a service link.

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

Fig. 3 is a diagram for explaining an example of a network. As shown in fig. 3, the communication system is composed of a UE as a terminal 20 and a plurality of network nodes 30. In the following, it is assumed that one network node 30 is associated with each function, but one network node 30 may be used to realize a plurality of functions, or a plurality of network nodes 30 may be used to realize one function. The "connection" described below may be a logical connection or a physical connection.

The RAN (Radio Access Network: radio access network) is a radio access enabled network node 30, which may comprise a base station 10, connected to UEs, AMFs (Access and Mobility Management Function: access and mobility management functions) and UPFs (User plane function: user plane functions). The AMF is a network node 30 having functions of RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, mobility management, and the like. The UPF is a Network node 30 having functions of a session point for an external PDU (Protocol Data Unit: protocol Data unit) connected to a DN (Data Network), routing and forwarding of a packet, qoS (Quality of Service: quality of service) processing of a user plane, and the like. The UPF and DN constitute a network slice. A plurality of network slices may also be constructed in the wireless communication network in an embodiment of the present invention.

AMF and UE, RAN, SMF (Session Management function: session management function), NSSF (Network Slice Selection Function: network slice selection function), NEF (Network Exposure Function: network open function), NRF (Network Repository Function: network storage function), UDM (Unified Data Management: unified data management), AUSF (Authentication Server Function: authentication server function), PCF (Policy Control Function: policy control function), AF (Application Function: application function). AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF are network nodes 30 connected to each other via respective service-based interfaces Namf, nsmf, nnssf, nnef, nnrf, nudm, nausf, npcf, naf.

The SMF is a network node 30 having session management, IP (Internet Protocol: internet protocol) address assignment and management for the UE, DHCP (Dynamic Host Configuration Protocol: dynamic host configuration protocol) functions, ARP (Address Resolution Protocol: address resolution protocol) proxy, roaming functions, and the like. The NEF is a Network node 30 having a Function of notifying other NFs (Network functions) of capabilities and events. The NSSF is a network node 30 having functions such as selection of a network slice to which the UE is connected, determination of an allowable nsai (Network Slice Selection Assistance Information: network slice selection assistance information), determination of a set nsai, and determination of an AMF set to which the UE is connected. The PCF is a network node 30 having a function of performing policy control of the network. The AF is a network node 30 having a function of controlling an application server. NRF is a network node 30 with the functionality to discover NF instances that provide services. The UDM is a network node 30 that manages subscriber data and authentication data. The UDM is connected to a UDR (Unified Data Repository: 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 is composed of a UE as a terminal 20 and a plurality of network nodes 30. In the following, it is assumed that one network node 30 is associated with each function, but one network node 30 may be used to realize a plurality of functions, or a plurality of network nodes 30 may be used to realize one function. The "connection" described below may be a logical connection or a physical connection.

The RAN is a radio access capable network node 30, which is connected to the UE, AMF and UPF. The AMF is a network node 30 having functions of RAN interface termination, NAS termination, registration management, connection management, reachability management, mobility management, and the like. The UPF is a network node 30 having functions of a PDU session point for the outside of the connection with DN, routing and forwarding of packets, qoS treatment of the user plane, and the like. The UPF and DN constitute a network slice. A plurality of network slices may also be constructed in the wireless communication network in an embodiment of the present invention.

The AMF is connected to UE, RAN, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF, SEPP (Security Edge Protection Proxy: security boundary protection agent). AMF, SMF, NSSF, NEF, NRF, UDM, AUSF, PCF, AF are network nodes 30 connected to each other via respective service-based interfaces Namf, nsmf, nnssf, nnef, nnrf, nudm, nausf, npcf, naf.

The SMF is a network node 30 having functions of session management, IP address allocation and management of UEs, DHCP functions, ARP proxy, roaming functions, and the like. The NEF is a network node 30 with the capability to notify other NFs of capabilities and events. The NSSF is a network node 30 having functions such as selection of a network slice to which the UE is connected, determination of an allowed nsai, determination of a set nsai, and determination of an AMF set to which the UE is connected. The PCF is a network node 30 having a function of performing policy control of the network. The AF is a network node 30 having a function of controlling an application server. NRF is a network node 30 with the functionality to discover NF instances that provide services. The SEPP is a non-transparent proxy filtering messages of the control plane between PLMNs (Public Land Mobile Network: public land mobile network). The vSEPP shown in fig. 3 is the SEPP in the visited network (visited network), and the hSEPP is the SEPP in the home network (home network).

As shown in fig. 3, the UE is in a roaming environment with a RAN and an AMF connected in a VPLMN (Visited PLMN). The VPLMN and HPLMN (Home PLMN: home public land mobile network) are connected via vSEPP and hSEPP. The UE can communicate with the UDM of the HPLMN, for example, via the AMF of the VPLMN.

Fig. 5 is a diagram for explaining an example of an environment in the embodiment of the present invention. Satellite communications, HAPS (High Altitude Platform Station: high-altitude platform), mobile IAB (Integrated Access and Backhaul: integrated access and backhaul) are important components of 5G evolution and 6G. For example, as shown in fig. 5, NTN based on satellite communication is envisaged. Satellite 10 sets country a and country B as coverage. Here, 1) and 2) shown below are important.

1) How the network gets trusted terminal location information. The network needs to properly handle emergency calls, interception of communications, and billing based on trusted terminal location information.

2) The terminal needs to switch the core network when crossing the border. The network can switch core networks by the terminal initiating a mobile registration procedure at the border.

To solve the above 1) and 2), for example, after the registration procedure, the network may not provide a service until the confirmation of the terminal location is completed. The AMF initiates a 5GC-NI-LR (Network Induced Location Request: network initiated location request) procedure. In the UE positioning of this procedure, a UE Assisted A-GNSS (Assisted-Global navigation satellite system: assisted global satellite positioning system) mode is performed between the UE and the LMF (Location Management Function: location management function). The AMF maps the terminal position acquired through this process to a map. The AMF performs registration cancellation (Deregister) for the terminal when it is determined that the terminal is located in an area that the AMF cannot handle. The AMF also periodically initiates the 5GC-NI-LR process. Here, there is a premise that the terminal forwards GNSS input information to the network unchanged.

However, the periodic calls from the network required by the above-described approach consume radio resources. The above embodiment relates to the above 2), and is merely an approximate correspondence. And, the authenticity of the GNSS input information sent by the terminal to the network is not guaranteed. The terminal position calculation on the network side takes about 10 seconds, and is longer than the case where the position calculation time on the terminal side is about several seconds. In addition, although the location calculation can be performed by the terminal at the time of the registration process, in the present specification, the network cannot trust the location information calculated by the terminal.

Therefore, a method of performing position calculation by USIM (Universal Subscriber Identity Module: global subscriber identity module) under the management of HPLMN may also be adopted. The USIM performs location calculation internally, conceals location information, and adds a signature. The USIM sends signed hidden location information to the network via the terminal. Public key encryption is used to enable use also for registration requests prior to the authentication process. Also, a process of verifying GNSS input information may be performed.

Fig. 6 is a timing chart for explaining an example of an operation related to position information in the embodiment of the present invention. In step S11, in the UE 20, the USIM calculates location information from the GNSS input information. The USIM has within it GNSS calculation logic, its own private key and the public key of NW node 10 (e.g., satellite ground station). The NW node 10 has its own private key and the public key of each USIM to which the HPLMN has been signed. In addition, the UE 20 may also send GNSS input information to the USIM.

The USIM hides the position information of the device and the GNSS input information used for calculation, which are the results calculated using the GNSS calculation logic, by the public key of the NW node 10. The USIM signs the hidden location information and GNSS input information by its own private key. In step S12, the USIM transmits the signed hidden position information and GNSS input information to the NW node 10 via the UE 20.

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

In step S14, the AMF 30A transmits the position information and the GNSS input information to the AI-processing node 30C. In step S15, the AI-processing node 30C verifies the validity of the position information and the GNSS input information. The verification method may also be an installation-dependent method. The AI-processing node 30C may be another name. When the AI-processing node 30C determines that the GNSS input information is not appropriate, it transmits a verification result to the AMF 30A and the OAM (Operation Administration and Maintenance: operation administration and maintenance) 30B (S16, S17). The verification result may also include information indicating that the GNSS input information is not appropriate. In addition, when the AI-processing node 30C determines that the GNSS input information is appropriate, it may transmit a verification result indicating appropriate to the AMF 30 or the OAM 30B. The execution order of step S16 and step S17 is arbitrary.

In step S18, the OAM 30B records the PEI (Permanent Equipment Identifier: permanent device identifier) corresponding to the UE 20 in the 5G-EIR (5G-Equipment Identity Register:5G device identification register) and verifies the GNSS input information anomaly in association with the corresponding subscriber information. The number of GNSS input information anomalies may also be recorded in association with subscriber information. In step S19, the AMF transmits a registration release request (Deregister) to the UE 20, and releases the registration of the UE 20. The execution order of step S18 and step S19 is arbitrary.

Fig. 7 is a flowchart for explaining example (1) of the registration operation in the embodiment of the present invention. Fig. 7 shows the operation of the AMF after the timing shown in fig. 6 is performed. In step S21, the AMF receives a registration request from the UE. In the next step S22, the AMF determines whether the PEI of the registration request is the registered PEI. If the PEI is recorded ("yes" in S22), the process proceeds to step S23, and if the PEI is not recorded ("no" in S22), the process proceeds to step S24. In step S23, the AMF rejects the registration request. On the other hand, in step S24, the AMF allows the registration request.

Fig. 8 is a flowchart for explaining example (2) of the registration operation in the embodiment of the present invention. Fig. 8 illustrates the operation of the AMF after the timing illustrated in fig. 6 is performed.

In step S31, the AMF receives a registration request from the UE. In the next step S22, the AMF determines whether or not the GNSS input information based on the subscriber information of the registration request is abnormal by a set number or more. If the number of times is equal to or greater than the set number of times (yes in S32), the flow proceeds to step S33, and if the number of times is smaller than the set number of times (no in S32), the flow proceeds to step S34. In step S33, the AMF rejects the registration request. On the other hand, in step S34, the AMF allows the registration request.

At least one of the flowcharts of fig. 7 and 8 may be executed, and when a registration request is allowed in each of the flowcharts of fig. 7 and 8, the registration request of the UE may be allowed.

The HPLMN may use an existing SoR (Steering of Roaming: roaming guide) procedure or an existing UPU (UE Parameters Update: UE parameter update) procedure to set the public key of the NW node and GNSS calculation logic within the USIM, or update the public key. In addition, the USIM can also use existing GAA (Generic Authentication Architecture: generic authentication architecture)/GBA (Generic Bootstrapping Architecture: generic bootstrapping architecture) procedures to derive a signature of the HPLMN for the public key corresponding to its own key. The USIM may also itself generate its own key.

According to the above embodiment, the network can obtain trusted terminal location information. The mobile communication carrier can perform network operation without worrying about an increase in the amount of radio resource usage and violating the communication interception limit. In addition, the network can verify whether the terminal reports false location information by tampering with the GNSS input information. In addition, the time for determining the location information can be shortened as compared with the method for calculating the location information of the terminal by the network.

That is, the network can accurately acquire the location information of the terminal.

(device Structure)

Next, functional configuration examples of the base station 10, the network node 30, and the terminal 20 that perform the above-described processing and operations will be described. The base station 10, the network node 30 and the terminal 20 comprise the functions of implementing the embodiments described above. However, the base station 10, the network node 30 and the terminal 20 may each have only some 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. 9, the base station 10 includes a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140. The functional configuration shown in fig. 9 is merely an example. The names of the functional sections and the functional distinction can be arbitrary as long as the operations according to the embodiments of the present invention can be implemented. In addition, the network node 30 may have the same functional structure as the base station 10. In addition, the network node 30 having a plurality of different functions in the system architecture may be constituted by a plurality of network nodes 30 separated for each function.

The transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 or the other network node 30 and transmitting the signal in a wired or wireless manner. 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 the preset setting information and various setting information transmitted to the terminal 20 in a storage device, and reads the setting information from the storage device as needed. The content of the setting information is, for example, a setting related to communication using NTN.

As described in the embodiment, the control unit 140 performs processing related to communication using NTN. The control unit 140 also performs processing related to communication with the terminal 20. The control unit 140 performs processing related to geographic location verification of the terminal 20. The transmitting unit 110 may include a function unit related to signal transmission in the control unit 140, and the receiving unit 120 may include a function unit related to signal reception in the control unit 140.

< terminal 20>

Fig. 10 is a diagram showing an example of the functional configuration of the terminal 20. As shown in fig. 10, the terminal 20 includes a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240. The functional configuration shown in fig. 10 is merely an example. The names of the functional sections and the functional distinction can be arbitrary as long as the operations according to the embodiments of the present invention can be implemented. As with the terminal 20, the USIM to which the terminal 20 is attached may also have a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.

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

The setting unit 230 stores the various setting information received from the network node 30 by the receiving unit 220 in a storage device, and reads the setting information from the storage device as needed. The setting unit 230 also stores preset setting information. The content of the setting information is, for example, a setting related to communication using NTN.

As described in the embodiment, the control unit 240 performs processing related to connection control for the network and the network slice. The transmitting unit 210 may include a function unit related to signal transmission in the control unit 240, and the receiving unit 220 may include a function unit related to signal reception in the control unit 240.

(hardware construction)

The block diagrams (fig. 9 and 10) used in the description of the above embodiment show blocks in units of functions. These functional blocks (structures) are realized by any combination of at least one of hardware and software. The implementation method of each functional block is not particularly limited. That is, each functional block may be realized by using one device physically or logically combined, or may be realized by directly or indirectly (for example, by using a wire, a wireless, or the like) connecting two or more devices physically or logically separated from each other, and using these plural devices. The functional blocks may also be implemented by combining software with the above-described device or devices.

Functionally, there are judgment, decision, judgment, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, establishment, comparison, assumption, expectation, view, broadcast (broadcast), notification (notification), communication (communication), forwarding (forwarding), configuration, reconfiguration (allocation), allocation (allocating, mapping), assignment (allocation), and the like, but not limited thereto. For example, a functional block (configuration unit) that causes transmission to function is called a transmitter (transmitting unit) or a transmitter (transmitter). In short, the implementation method is not particularly limited as described above.

For example, the network node 30, the terminal 20, and the like in one embodiment of the present disclosure may also function as a computer that performs the processing of the wireless communication method of the present disclosure. Fig. 11 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure. The network node 30 may also have the same hardware structure as the base station 10. The USIM may also have the same hardware structure as the terminal 20. The base station 10 and the terminal 20 may be physically configured as computer devices 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.

In addition, in the following description, the term "means" may be replaced with "circuit", "device", "unit", or the like. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the illustrated devices, or may be configured to include no part of the devices.

The functions in the base station 10 and the terminal 20 are realized by the following methods: the processor 1001 performs an operation by reading predetermined software (program) into hardware such as the processor 1001 and the storage device 1002, and controls at least one of communication by the communication device 1004 and reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.

The processor 1001 controls the entire computer by, for example, operating an operating system. The processor 1001 may be configured by a central processing unit (CPU: central Processing Unit) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like. For example, the control unit 140, the control unit 240, and the like may be realized by the processor 1001.

Further, the processor 1001 reads out a program (program code), a software module, data, or the like from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes accordingly. As the program, a program that causes a computer to execute at least a part of the operations described in the above embodiments is used. For example, the control unit 140 of the base station 10 shown in fig. 9 may be realized by a control program stored in the storage device 1002 and operated by the processor 1001. For example, the control unit 240 of the terminal 20 shown in fig. 10 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001. Although the above-described various processes are described as being executed by one processor 1001, the above-described various processes may be executed simultaneously or sequentially by two or more processors 1001. The processor 1001 may also be mounted by more than one chip. In addition, the program may also be transmitted from the network via a telecommunication line.

The storage device 1002 is a computer-readable recording medium, and may be configured by at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM: erasable programmable Read Only Memory), EEPROM (Electrically Erasable Programmable ROM: electrically erasable programmable Read Only Memory), RAM (Random Access Memory: random access Memory), and the like. The storage 1002 may also be referred to as a register, a cache, a main memory (main storage), or the like. The storage device 1002 can store a program (program code), a software module, or the like that can be executed to implement a communication method according to an embodiment of the present disclosure.

The auxiliary storage device 1003 is a computer-readable recording medium, and may be configured of at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a Floppy disk, a magneto-optical disk (for example, a Compact Disc, a digital versatile Disc, a Blu-ray (registered trademark) Disc), a smart card, a flash memory (for example, a card, a stick, a key drive), a flowy (registered trademark) Disc, a magnetic stripe, and the like. The storage medium may be, for example, another suitable medium such as a database or a server including at least one of the storage device 1002 and the auxiliary storage device 1003.

The communication device 1004 is hardware (transceiver device) for performing communication 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, for example. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like, for example, to realize at least one of frequency division duplexing (FDD: frequency Division Duplex) and time division duplexing (TDD: time Division Duplex). For example, a transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, and the like may be realized by the communication device 1004. The transmitting/receiving unit may be physically or logically separate from the transmitting unit.

The input device 1005 is an input apparatus (for example, a keyboard, a mouse, a microphone, a switch, a key, a sensor, or the like) that receives an input from the outside. The output device 1006 is an output apparatus (for example, a display, a speaker, an LED lamp, or the like) that performs output to the outside. The input device 1005 and the output device 1006 may be integrally formed (for example, a touch panel).

The processor 1001 and the storage device 1002 are connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus or may be configured using a bus different between devices.

The base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP: digital Signal Processor), an ASIC (Application Specific Integrated Circuit: application specific integrated circuit), a PLD (Programmable Logic Device: programmable logic device), an FPGA (Field Programmable Gate Array: field programmable gate array), or may be configured to implement a part or all of the functional blocks by the hardware. For example, the processor 1001 may also be installed using at least one of these hardware.

In the USIM, hardware for realizing GNSS calculation logic may be internally installed, or hardware for holding a private key of itself and a public key of the NW node 10 (for example, a satellite ground station) may be internally installed.

(summary of embodiments)

As described above, according to an embodiment of the present invention, there is provided a terminal having a USIM which is a global subscriber identity module, wherein the USIM has: a receiving unit that receives GNSS input information from the terminal, the GNSS being a global navigation satellite system; a control unit that calculates position information of the device based on the GNSS input information; and a transmitting unit that transmits the position information and the GNSS input information, which are suppressed by the public key of the network node and signed by the private key of the USIM, to a network node.

According to the above structure, the network can acquire the trusted terminal position information. The mobile communication carrier can perform network operation without worrying about an increase in the amount of radio resource usage and violating the communication interception limit. In addition, the network can verify whether the terminal reports false location information by tampering with the GNSS input information. In addition, the time for determining the location information can be shortened as compared with the method for calculating the location information of the terminal by the network. That is, the network can accurately acquire the location information of the terminal.

Furthermore, according to an embodiment of the present invention, there is provided a network node having: a receiving unit that receives, from a 1 st network node, position information of a terminal and GNSS input information used for calculation of the position information of the terminal, the GNSS being a global navigation satellite system; and a transmitting unit configured to transmit the position information and the GNSS input information to a 2 nd network node, wherein when the receiving unit receives a verification result indicating that the GNSS input information is not appropriate from the 2 nd network node, the transmitting unit transmits a registration cancellation request to the terminal.

According to the above structure, the network can acquire the trusted terminal position information. The mobile communication carrier can perform network operation without worrying about an increase in the amount of radio resource usage and violating the communication interception limit. In addition, the network can verify whether the terminal reports false location information by tampering with the GNSS input information. In addition, the time for determining the location information can be shortened as compared with the method for calculating the location information of the terminal by the network. That is, the network can accurately acquire the location information of the terminal.

When the receiving unit receives a verification result indicating that the GNSS input information is not appropriate from the 2 nd network node, the network node may reject a registration request from a PEI corresponding to the terminal, the PEI being a permanent device identifier. According to this structure, in the case where the terminal reports false position information by tampering with GNSS input information, the network can reject a registration request from the terminal.

The network node may reject a registration request from subscriber information corresponding to the terminal when the number of times the receiving unit receives a verification result indicating that the GNSS input information is not appropriate from the 2 nd network node is equal to or greater than a threshold value. According to this structure, in the case where the terminal reports false position information by tampering with GNSS input information, the network can reject a registration request from the terminal.

Furthermore, according to an embodiment of the present invention, there is provided a communication method, performed by a network node: a receiving step of receiving, from a 1 st network node, position information of a terminal and GNSS input information used in calculation of the position information of the terminal, the GNSS being a global navigation satellite system; a sending step, namely sending the position information and the GNSS input information to a 2 nd network node; and a step of transmitting a registration release request to the terminal when a verification result indicating that the GNSS input information is not appropriate is received from the 2 nd network node.

According to the above structure, the network can acquire the trusted terminal position information. The mobile communication carrier can perform network operation without worrying about an increase in the amount of radio resource usage and violating the communication interception limit. In addition, the network can verify whether the terminal reports false location information by tampering with the GNSS input information. In addition, the time for determining the location information can be shortened as compared with the method for calculating the location information of the terminal by the network. That is, the network can accurately acquire the location information of the terminal.

(supplement of the embodiment)

While the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will appreciate various modifications, substitutions, alternatives, and the like. Specific numerical examples are described for the purpose of promoting the understanding of the present invention, but these numerical examples are only examples and any appropriate values may be used unless otherwise specified. The distinction between items in the above description is not essential to the present invention, and items described in two or more items may be used in combination as required, or items described in one item may be applied to items described in another item (unless contradiction arises). The boundaries of functional units or processing units in the functional block diagrams do not necessarily correspond to the boundaries of physical components. The operation of the plurality of functional units may be physically performed by one member, or the operation of the plurality of functional units may be physically performed by a plurality of members. With regard to the processing procedures described in the embodiments, the order of processing may be exchanged without contradiction. The network node 30 and the terminal 20 are illustrated using functional block diagrams for ease of illustration processing, but such means may also be implemented in hardware, in software or in a combination thereof. The software that is operated by the processor of the network node 30 according to the embodiment of the present invention and the software that is operated by the processor of the terminal 20 according to the 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), a removable disk, a CD-ROM, a database, a server, or any other suitable storage medium, respectively.

Further, the notification of the information is not limited to the form/embodiment described in the present disclosure, and may be performed using other methods. For example, the notification of the information may be implemented by physical layer signaling (e.g., DCI (Downlink Control Information: downlink control information), UCI (Uplink Control Information: uplink control information)), higher layer signaling (e.g., RRC (Radio Resource Control: radio resource control) signaling, MAC (Medium Access Control: medium access control) signaling, broadcast information (MIB (Master Information Block: master information block), SIB (System Information Block: system information block)), other signals, or a combination thereof.

The various forms/embodiments described in the present disclosure may also be applied to at least one of LTE (Long Term Evolution: long term evolution), LTE-a (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4 th generation mobile communication system: fourth generation mobile communication system), 5G (5 th generation mobile communication system: fifth generation mobile communication system), FRA (Future Radio Access: future wireless access), NR (new Radio: new air interface), W-CDMA (registered trademark), GSM (registered trademark), CDMA 2000, UMB (Ultra Mobile Broadband: ultra mobile broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-wide), bluetooth (registered trademark), systems using other suitable systems, and next generation systems extended accordingly. Further, a plurality of systems (for example, a combination of 5G and at least one of LTE and LTE-a) may be applied in combination.

The processing procedures, timings, flows, and the like of the respective modes/embodiments described in the present specification can be replaced without contradiction. For example, for the methods described in this disclosure, elements of the various steps are presented using an illustrated order, but are not limited to the particular order presented.

In the present specification, the specific operation performed by the network node 30 may be performed by an upper node (upper node) according to circumstances. In a network consisting of one or more network nodes (network nodes) with network node 30, it is apparent that various actions performed for communication with terminal 20 may be performed by network node 30 and at least one of the other network nodes than network node 30 (e.g., MME or S-GW, etc. may be considered, but are not limited thereto). In the above, the case where one other network node than the network node 30 is illustrated, but the other network node may be a combination of a plurality of other network nodes (for example, MME and S-GW).

Information, signals, and the like described in the present disclosure can be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). Or may be input or output via a plurality of network nodes.

The input or output information and the like may be stored in a specific location (for example, a memory), or may be managed using a management table. Information or the like that is input or output may be rewritten, updated, or recorded. The outputted information and the like may also be deleted. The input information and the like may also be transmitted to other devices.

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

With respect to software, whether referred to as software, firmware, middleware, microcode, hardware description language, or by other names, should be broadly interpreted to mean a command, a set of commands, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, and the like.

In addition, software, commands, information, etc. may be transmitted and received via a transmission medium. For example, in the case where software is transmitted from a website, server, or other remote source using at least one of a wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL: digital Subscriber Line), etc.) and wireless technology (infrared, microwave, etc.), at least one of the wired and wireless technologies is included in the definition of transmission medium.

Information, signals, etc. described in this disclosure may also be represented using any of a variety of different technologies. For example, data, commands, instructions, information, signals, bits, symbols, chips, etc., that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or photons, or any combination thereof.

In addition, the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal (signaling). In addition, the signal may also be a message. In addition, the component carrier (CC: component Carrier) may also be referred to as a carrier frequency, a cell, a frequency carrier, etc.

The terms "system" and "network" as used in this disclosure may be used interchangeably.

In addition, information, parameters, and the like described in this disclosure may be expressed using absolute values, relative values to predetermined values, or other information corresponding thereto. For example, radio resources may also be indicated by an index.

The names used for the above parameters are not limiting names in any way. Further, the numerical formulas and the like using these parameters may also be different from those explicitly disclosed in the present disclosure. Since the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by all appropriate names, the various names assigned to these various channels and information elements are not limiting names in any respect.

In the present disclosure, terms such as "Base Station", "radio Base Station", "Base Station apparatus", "fixed Station", "NodeB", "eNodeB (eNB)", "gndeb (gNB)", "access point", "transmission point (transmission point)", "reception point", "transmission point", "reception point", "cell", "sector", "cell group", "carrier", "component carrier", and the like may be used interchangeably. The terms macrocell, microcell, femtocell, picocell, and the like are also sometimes used to refer to a base station.

The base station can accommodate one or more (e.g., three) cells. When a base station accommodates a plurality of cells, the entire coverage area of the base station can be divided into a plurality of smaller areas, and each of the smaller areas can also provide communication services through a base station subsystem (for example, an indoor small base station (RRH: remote Radio Head (remote radio head)), and the term "cell" or "sector" refers to a part or the entire coverage area of at least one of a base station and a base station subsystem that performs communication services within the coverage area.

In the present disclosure, terms such as "Mobile Station", "User terminal", "User Equipment", and "terminal" may be used interchangeably.

For mobile stations, those skilled in the art are sometimes referred to by the following terms: a subscriber station, mobile unit (mobile unit), subscriber unit, wireless unit, remote unit, mobile device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, or some other suitable terminology.

At least one of the base station and the mobile station may be referred to as a transmitting apparatus, a receiving apparatus, a communication apparatus, or the like. At least one of the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like. The mobile body may be a vehicle (e.g., an automobile, an airplane, etc.), a mobile body that moves unmanned (e.g., an unmanned aerial vehicle, an autopilot, etc.), or a robot (manned or unmanned). At least one of the base station and the mobile station also includes a device that does not necessarily move during a communication operation. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things: internet of things) device such as a sensor.

In addition, the base station in the present disclosure may be replaced with a user terminal. For example, the various forms/embodiments of the present disclosure may also be applied to a structure in which communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, may also be referred to as D2D (Device-to-Device), V2X (Vehicle-to-Everything system), or the like). In this case, the terminal 20 may have the function of the network node 30. Further, the terms "upstream" and "downstream" may be replaced with terms (e.g., "side") corresponding to the inter-terminal communication. For example, the uplink channel, the downlink channel, and the like may be replaced with side channels.

Likewise, the user terminal in the present disclosure may be replaced with a base station. In this case, the base station may have the functions of the user terminal described above.

The terms "determining" and "determining" used in the present disclosure may include various operations. The "judgment" and "determination" may include, for example, a matter in which judgment (determination), calculation (calculation), processing (processing), derivation (development), investigation (investigation), search (lookup up, search, inquiry) (for example, search in a table, database, or other data structure), confirmation (evaluation), or the like are regarded as a matter in which "judgment" and "determination" are performed. Further, "determining" and "deciding" may include a matter in which reception (e.g., reception of information), transmission (e.g., transmission of information), input (input), output (output), access (e.g., access of data in a memory) is performed as a matter in which "determining" and "deciding" are performed. Further, "judging" and "determining" may include the matters of performing a decision (resolving), a selection (selecting), a selection (setting), a establishment (establishing), a comparison (comparing), and the like as matters of performing "judging" and "determining". That is, "determining" or "determining" may include what is considered to be "determining" or "determining" certain actions. The "judgment (decision)" may be replaced by "assumption", "expectation", "consider", or the like.

The terms "connected," "coupled," or any variation of these terms are intended to refer to any direct or indirect connection or coupling between two or more elements, including the case where one or more intervening elements may be present between two elements that are "connected" or "coupled" to each other. The combination or connection of the elements may be physical, logical, or a combination of these. For example, "connection" may also be replaced with "access". As used in this disclosure, two elements may be considered to be "connected" or "joined" to each other using at least one of one or more wires, cables, and printed electrical connections, and as some non-limiting and non-inclusive examples, electromagnetic energy or the like having wavelengths in the wireless frequency domain, the microwave region, and the optical (both visible and invisible) region.

The reference signal may be simply RS (Reference Signal) or may be called Pilot (Pilot) depending on the specifications applied.

As used in this disclosure, the recitation of "according to" is not intended to mean "according to" unless explicitly recited otherwise. In other words, the term "according to" means "according to" and "according to" at least.

Any reference to elements referred to using "1 st", "2 nd", etc. as used in this disclosure also does not entirely define the number or order of these elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, references to elements 1 and 2 do not indicate that only two elements can be taken or that in some forms element 1 must precede element 2.

The "unit" in the structure of each device may be replaced with "part", "circuit", "device", or the like.

Where the terms "include", "comprising" and variations thereof are used in this disclosure, these terms are intended to be inclusive as well as the term "comprising". Also, the term "or" as used in this disclosure means not exclusive or.

In the present disclosure, for example, where an article is added by translation as in a, an, and the in english, the present disclosure may also include a case where a noun following the article is in plural.

In the present disclosure, the term "a and B are different" may also mean that "a and B are different from each other". In addition, the term may mean that "a and B are different from C, respectively. The terms "separate," coupled, "and the like may also be construed as" different.

The various forms and embodiments described in this disclosure may be used alone, in combination, or switched depending on the implementation. Note that the notification of the predetermined information is not limited to being explicitly performed (for example, notification of "yes" or "X"), and may be performed implicitly (for example, notification of the predetermined information is not performed).

The present disclosure has been described in detail above, but it should be 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 implemented as 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 intended to be illustrative, and not in any limiting sense.

Description of the reference numerals

10: a base station;

110: a transmitting unit;

120: a receiving section;

130: a setting unit;

140: a control unit;

20: a terminal;

210: a transmitting unit;

220: a receiving section;

230: a setting unit;

240: a control unit;

30: a network node;

1001: a processor;

1002: a storage device;

1003: an auxiliary storage device;

1004: a communication device;

1005: an input device;

1006: and an output device.

Claims (5)

1. A terminal having a USIM, which is a global subscriber identity module, wherein,

the USIM has:

a receiving unit that receives GNSS input information from the terminal, the GNSS being a global navigation satellite system;

a control unit that calculates position information of the device based on the GNSS input information; and

and a transmitting unit that transmits the position information and the GNSS input information, which are suppressed by a public key of the network node and signed by a private key of the USIM, to a network node.

2. A network node having:

a receiving unit that receives, from a 1 st network node, position information of a terminal and GNSS input information used for calculation of the position information of the terminal, the GNSS being a global navigation satellite system; and

a transmitting unit configured to transmit the position information and the GNSS input information to a 2 nd network node,

the transmitting unit transmits a registration cancellation request to the terminal when the receiving unit receives a verification result indicating that the GNSS input information is not appropriate from the 2 nd network node.

3. The network node of claim 2, wherein,

when the receiving unit receives a verification result indicating that the GNSS input information is not appropriate from the 2 nd network node, the network node rejects a registration request from a PEI corresponding to the terminal, the PEI being a permanent device identifier.

4. The network node of claim 2, wherein,

when the number of times the receiving unit receives the verification result indicating that the GNSS input information is not appropriate from the 2 nd network node is equal to or greater than a threshold value, the network node rejects a registration request from subscriber information corresponding to the terminal.

5. A method of communication, performed by a network node, comprising the steps of:

a receiving step of receiving, from a 1 st network node, position information of a terminal and GNSS input information used in calculation of the position information of the terminal, the GNSS being a global navigation satellite system;

a sending step, namely sending the position information and the GNSS input information to a 2 nd network node; and

and a step of transmitting a registration release request to the terminal when a verification result indicating that the GNSS input information is not appropriate is received from the 2 nd network node.