WO2024014640A1 - 무선 통신 시스템에서 단말 인증 방법 및 장치 - Google Patents
무선 통신 시스템에서 단말 인증 방법 및 장치 Download PDFInfo
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- WO2024014640A1 WO2024014640A1 PCT/KR2023/001695 KR2023001695W WO2024014640A1 WO 2024014640 A1 WO2024014640 A1 WO 2024014640A1 KR 2023001695 W KR2023001695 W KR 2023001695W WO 2024014640 A1 WO2024014640 A1 WO 2024014640A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
- H04W12/043—Key management, e.g. using generic bootstrapping architecture [GBA] using a trusted network node as an anchor
- H04W12/0433—Key management protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
- H04W12/041—Key generation or derivation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/062—Pre-authentication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/60—Context-dependent security
- H04W12/69—Identity-dependent
- H04W12/72—Subscriber identity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/60—Context-dependent security
- H04W12/69—Identity-dependent
- H04W12/75—Temporary identity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
Definitions
- the following description is about a wireless communication system and a method of performing terminal authentication. Specifically, when the terminal is in a roaming situation, it relates to a method of performing the AKMA key registration procedure to support AKMA (authentication and key management for applications) service.
- AKMA authentication and key management for applications
- Wireless access systems are being widely deployed to provide various types of communication services such as voice and data.
- a wireless access system is a multiple access system that can support communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.).
- multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA) systems. division multiple access) systems, etc.
- enhanced mobile broadband (eMBB) communication technology is being proposed compared to the existing radio access technology (RAT).
- RAT radio access technology
- a communication system that takes into account reliability and latency-sensitive services/UE (user equipment) as well as mMTC (massive machine type communications), which connects multiple devices and objects to provide a variety of services anytime and anywhere, is being proposed. .
- mMTC massive machine type communications
- the present disclosure can provide a method and device for performing authentication of a terminal in a wireless communication system.
- the present disclosure can provide a method and device for performing an AKMA key registration procedure in a VPLMN (visited PLMN) when a terminal is in a roaming situation in a wireless communication system.
- VPLMN visited PLMN
- the present disclosure can provide a method and device for determining whether an authentication server function (AUSF) is roaming in a wireless communication system.
- AUSF authentication server function
- the present disclosure can provide a method and device for registering an AKMA key with AAnF (AKMA anchor function) of HPLMN and AAnF of VPLMN after primary authentication of a terminal in a wireless communication system.
- AAnF AKMA anchor function
- the present disclosure can provide a method and device for registering an AKMA key in the AAnF of a VPLMN through the access and mobility management function (AMF) of the VPLMN in a wireless communication system.
- AMF access and mobility management function
- a step of receiving a message based on primary authentication from a terminal where the message is a subscription concealed identifier (SUCI) ) or 5G-GUTI (globally unique temporary identifier), and based on the message, sends an authentication request message including SUCI or SUPI (subscriber permanent identifier) and serving network name (SN-name) to AUSF (authentication server) function) and receiving an authentication response message from the AUSF, wherein if the terminal is a roaming terminal and AKMA (Authentication and Key Management for Applications) is supported, the authentication response message includes an AKMA anchor key and an AKMA anchor. It includes an A-KID indicating the key, and the AMF can perform an AKMA anchor key registration procedure with AAnF (AKMA anchor function) based on SUPI, AKMA anchor key, and A-KID.
- SUCI subscription concealed identifier
- 5G-GUTI global unique temporary identifier
- an access and mobility management function operating in a wireless communication system
- at least one transceiver at least one processor, and operably connected to at least one processor, and when executed, at least Includes at least one memory that stores instructions that enable one processor to perform a specific operation, the specific operation being: at least one transceiver to receive a message based on primary authentication from a terminal.
- the message contains either SUCI (subscription concealed identifier) or 5G-GUTI (globally unique temporary identifier), and based on the message, SUCI or SUPI (subscriber permanent identifier) and serving network name (SN-name) are generated.
- AKMA Authentication and If Key Management for Applications
- a message based on primary authentication is transmitted to an access and mobility management function (AMF), and the message is subscription concealed (SUCI).
- AMF access and mobility management function
- SUCI subscription concealed
- identifier or a globally unique temporary identifier (5G-GUTI)
- 5G-GUTI globally unique temporary identifier
- the AMF acquires an AKMA anchor key and an A-KID indicating the AKMA anchor key to AAnF ( You can perform the AKMA anchor key registration procedure with the AKMA anchor function.
- At least one transceiver in a terminal operating in a wireless communication system, at least one transceiver, at least one processor, and operably connected to at least one processor, when executed, at least one processor performs a specific operation.
- At least one memory storing instructions to perform, the specific operation of which is: at least one transceiver to transmit a message based on primary authentication to an access and mobility management function (AMF) control, the message includes either SUCI (subscription concealed identifier) or 5G-GUTI (globally unique temporary identifier), and if the terminal supports AKMA (Authentication and Key Management for Applications), based on the network root key generates an AKMA anchor key and an A-KID indicating the AKMA anchor key, and completes authentication for the network; however, if the terminal is a roaming terminal, the AMF generates an AKMA anchor key and an A-KID indicating the AKMA anchor key. You can obtain and perform the AKMA anchor key registration procedure with AAnF (AKMA anchor function
- the at least one processor is configured to allow the device to perform primary authentication ( Control to receive messages based on primary authentication, where the message includes either SUCI (subscription concealed identifier) or 5G-GUTI (globally unique temporary identifier), and based on the message, SUCI or SUPI (subscriber permanent identifier) Control to transmit an authentication request message including the serving network name (SN-name) to AUSF (authentication server function), and control to receive an authentication response message from AUSF, but if the terminal is a roaming terminal and AKMA (Authentication and Key If Management for Applications is supported, the authentication response message includes an AKMA anchor key and an A-KID indicating the AKMA anchor key, and AMF uses AKMA anchor function (AAnF) based on SUPI, AKMA anchor key, and A-KID. You can perform the AKMA anchor key registration procedure.
- primary authentication Control to receive messages based on primary authentication, where the message includes either SUCI (subscription concealed identifier) or 5G-GUTI (glob
- At least one executable by a processor includes a command, wherein at least one command controls the device to receive a message based on primary authentication from the terminal, where the message is a subscription concealed identifier (SUCI) or a globally unique temporary identifier (5G-GUTI).
- SUCI subscription concealed identifier
- 5G-GUTI globally unique temporary identifier
- AUSF authentication server function
- AUSF authentication server function
- the authentication response message includes an AKMA anchor key and an A-KID indicating the AKMA anchor key
- AMF can perform the AKMA anchor key registration procedure with AAnF (AKMA anchor function) based on SUPI, AKMA anchor key, and A-KID.
- AMF may be the AMF for a visited public land mobile network (VPLMN), and AAnF may be the AAnF of the VPLMN.
- VPLMN visited public land mobile network
- AAnF may be the AAnF of the VPLMN.
- AUSF is the AUSF of HPLMN (home PLMN), and AUSF performs the AAnF and AKMA anchor key registration procedures of HPLMN based on the AKMA anchor key and A-KID regardless of whether the terminal is roaming. can do.
- the AUSF of the HPLMN determines whether the terminal is a roaming terminal based on the serving network name, and if the terminal is a roaming terminal, the AUSF of the HPLMN uses an AKMA anchor key and an AKMA anchor key.
- An authentication message including the indicated A-KID is transmitted to the AMF for the VPLMN, and the AMF for the VPLMN can perform the AAnF and AKMA anchor key registration procedures for the VPLMN.
- a roaming terminal when a roaming terminal transmits an application session creation request to the AF (application function) of the VPLMN, an application key is provided to the terminal based on the AAnF of the VPLMN, and the roaming terminal transmits an application session creation request to the AF (application function) of the VPLMN.
- an application key may be provided to the terminal based on AAnF for HPLMN.
- an application session request transmitted by a terminal includes an A-KID, and the AF can determine whether the terminal is a roaming terminal based on the A-KID.
- the AF when the terminal is determined to be a roaming terminal, the AF requests an application key through the AAnF of the VPLMN to obtain the application key and application key validity time information derived from the AKMA anchor key to communicate with the terminal and the application. Session establishment can be performed.
- the AF when the terminal is determined to be a non-roaming terminal, the AF requests an application key through AAnF of HPLMN to obtain the application key and application key validity time information derived from the AKMA anchor key and communicates with the terminal.
- Application session establishment can be performed.
- AMF for VPLMN uses a routing indicator (RID) and a home network identifier in A-KID based on a network repository function (NRF) discovery and selection procedure or local configuration. You can select the AAnF of the VPLMN through identifier).
- RID routing indicator
- NRF network repository function
- the AMF for the VPLMN may further utilize the serving PLMN ID (serving PLMN ID) to select the AAnF of the VPLMN.
- serving PLMN ID serving PLMN ID
- the A-KID further includes a serving PLMN ID, but if the terminal is a roaming terminal, the serving PLMN ID in the A-KID indicates the VPLMN ID, and the terminal is a non-roaming terminal.
- the serving PLMN ID in A-KID may be set to a preset value.
- the AUSF when the terminal and the AUSF perform primary authentication, the AUSF is instructed by unified data management (UDM) whether to support AKMA, and when AKMA is supported, the network root is established in each of the terminal and the AUSF.
- UDM unified data management
- An AKMA anchor key and A-KID can be generated based on the key.
- a message based on primary authentication received from the terminal may be an N1 message.
- the present disclosure can provide a method for performing authentication of a terminal in a wireless communication system.
- the present disclosure can provide a method of performing an AKMA key registration procedure in a VPLMN when a terminal is in a roaming situation in a wireless communication system.
- the present disclosure can provide a method for AUSF to determine whether a terminal is roaming in a wireless communication system.
- the present disclosure may provide a method of registering an AKMA key in AAnF of HPLMN and AAnF of VPLMN after primary authentication of a terminal in a wireless communication system.
- the present disclosure may provide a method of registering an AKMA key in the AAnF of a VPLMN through the AMF of the VPLMN in a wireless communication system.
- FIG. 1 is a diagram showing an example of a communication system applicable to the present disclosure.
- Figure 2 shows an example of a UE to which the implementation of the present specification is applied.
- Figure 3 is a diagram showing an example of functional separation of a general NG-RAN and 5GC (5th generation core).
- Figure 4 is a diagram showing an example of a general architecture of a 5G (5th generation) system.
- Figure 5 is a diagram showing a method of starting an authentication procedure applicable to the present disclosure.
- Figure 6 is a diagram showing a method of performing authentication based on the EAP AKA' method applicable to the present disclosure.
- Figure 7 is a diagram showing a method of performing authentication based on the 5G AKA' method applicable to the present disclosure.
- Figure 8 is a diagram showing the hierarchical structure of keys applicable to the present disclosure.
- Figure 9 is a diagram showing the AKMA key hierarchy applicable to the present disclosure.
- Figure 10 is a diagram illustrating a method for establishing an application session according to an embodiment of the present disclosure.
- Figure 11 is a diagram showing an AAnF selection and search procedure applicable to the present disclosure.
- Figure 12 is a diagram showing a method of starting AKMA applicable to the present disclosure.
- Figure 13 is a diagram showing a method for removing an AKMA context applicable to the present disclosure.
- Figure 14 is a diagram showing a method of registering an AKMA key with AAnF of a VPLMN applicable to the present disclosure.
- Figure 15 is a diagram showing a method of registering an AKMA key with AAnF of HPLMN applicable to the present disclosure.
- Figure 16 is a diagram showing an A-KID applicable to the present disclosure.
- Figure 17 is a diagram showing an AKMA key registration method applicable to the present disclosure.
- Figure 18 is a flowchart for AMF operation applicable to the present disclosure.
- Figure 19 is a diagram showing a terminal operation method applicable to this disclosure.
- each component or feature may be considered optional unless explicitly stated otherwise.
- Each component or feature may be implemented in a form that is not combined with other components or features. Additionally, some components and/or features may be combined to configure an embodiment of the present disclosure. The order of operations described in embodiments of the present disclosure may be changed. Some features or features of one embodiment may be included in another embodiment or may be replaced with corresponding features or features of another embodiment.
- the base station is meant as a terminal node of the network that directly communicates with the mobile station. Certain operations described in this document as being performed by the base station may, in some cases, be performed by an upper node of the base station.
- 'base station' is a term such as fixed station, Node B, eNB (eNode B), gNB (gNode B), ng-eNB, advanced base station (ABS), or access point. It can be replaced by .
- a terminal may include a user equipment (UE), a mobile station (MS), a subscriber station (SS), a mobile subscriber station (MSS), It can be replaced with terms such as mobile terminal or advanced mobile station (AMS).
- UE user equipment
- MS mobile station
- SS subscriber station
- MSS mobile subscriber station
- AMS advanced mobile station
- the transmitting end refers to a fixed and/or mobile node that provides a data service or a voice service
- the receiving end refers to a fixed and/or mobile node that receives a data service or a voice service. Therefore, in the case of uplink, the mobile station can be the transmitting end and the base station can be the receiving end. Likewise, in the case of downlink, the mobile station can be the receiving end and the base station can be the transmitting end.
- Embodiments of the present disclosure include wireless access systems such as the IEEE 802.xx system, 3GPP (3rd Generation Partnership Project) system, 3GPP LTE (Long Term Evolution) system, 3GPP 5G (5th generation) NR (New Radio) system, and 3GPP2 system. It may be supported by at least one standard document disclosed in one, and in particular, embodiments of the present disclosure are supported by the 3GPP TS (technical specification) 38.211, 3GPP TS 38.212, 3GPP TS 38.213, 3GPP TS 38.321 and 3GPP TS 38.331 documents. It can be.
- 3GPP TS technical specification
- embodiments of the present disclosure can be applied to other wireless access systems and are not limited to the above-described systems. As an example, it may be applicable to systems applied after the 3GPP 5G NR system and is not limited to a specific system.
- CDMA code division multiple access
- FDMA frequency division multiple access
- TDMA time division multiple access
- OFDMA orthogonal frequency division multiple access
- SC-FDMA single carrier frequency division multiple access
- LTE may refer to technology after 3GPP TS 36.xxx Release 8.
- LTE technology after 3GPP TS 36.xxx Release 10 may be referred to as LTE-A
- LTE technology after 3GPP TS 36.xxx Release 13 may be referred to as LTE-A pro.
- 3GPP NR may refer to technology after TS 38.xxx Release 15.
- 3GPP 6G may refer to technologies after TS Release 17 and/or Release 18. “xxx” refers to the standard document detail number.
- LTE/NR/6G can be collectively referred to as a 3GPP system.
- abbreviations, and other background technology that may be used in this document, please refer to the following standard document description published prior to this document.
- terms, abbreviations, and other background technologies related to LTE/EPS can refer to the 36.xxx series, 23.xxx series, and 24.xxx series, and terms and abbreviations related to NR (new radio)/5GS.
- other background technologies can refer to the 38.xxx series, 23.xxx series, and 24.xxx series.
- the three key requirements areas for 5G are (1) Enhanced Mobile Broadband (eMBB) area, (2) Massive Machine Type Communication (mMTC) area, and (3) Ultra-Reliable and Includes the area of ultra-reliable and low latency communications (URLLC).
- eMBB Enhanced Mobile Broadband
- mMTC Massive Machine Type Communication
- URLLC ultra-Reliable and Includes the area of ultra-reliable and low latency communications
- KPI Key Performance Indicator
- FIG. 1 is a diagram illustrating an example of a communication system applied to the present disclosure.
- the communication system 100 applied to the present disclosure includes a wireless device, a base station, and a network.
- a wireless device refers to a device that performs communication using wireless access technology (e.g., 5G NR, LTE) and may be referred to as a communication/wireless/5G device.
- wireless devices include robots (100a), vehicles (100b-1, 100b-2), extended reality (XR) devices (100c), hand-held devices (100d), and home appliances (100d).
- appliance) (100e), IoT (Internet of Thing) device (100f), and AI (artificial intelligence) device/server (100g).
- vehicles may include vehicles equipped with wireless communication functions, autonomous vehicles, vehicles capable of inter-vehicle communication, etc.
- the vehicles 100b-1 and 100b-2 may include an unmanned aerial vehicle (UAV) (eg, a drone).
- UAV unmanned aerial vehicle
- the XR device 100c includes augmented reality (AR)/virtual reality (VR)/mixed reality (MR) devices, including a head-mounted device (HMD), a head-up display (HUD) installed in a vehicle, a television, It can be implemented in the form of smartphones, computers, wearable devices, home appliances, digital signage, vehicles, robots, etc.
- the mobile device 100d may include a smartphone, smart pad, wearable device (eg, smart watch, smart glasses), computer (eg, laptop, etc.), etc.
- Home appliances 100e may include a TV, refrigerator, washing machine, etc.
- IoT device 100f may include sensors, smart meters, etc.
- the base station 120 and the network 130 may also be implemented as wireless devices, and a specific wireless device 120a may operate as a base station/network node for other wireless devices.
- Wireless devices 100a to 100f may be connected to the network 130 through the base station 120.
- AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI server 100g through the network 130.
- the network 130 may be configured using a 3G network, 4G (eg, LTE) network, or 5G (eg, NR) network.
- Wireless devices 100a to 100f may communicate with each other through the base station 120/network 130, but communicate directly (e.g., sidelink communication) without going through the base station 120/network 130. You may.
- vehicles 100b-1 and 100b-2 may communicate directly (eg, vehicle to vehicle (V2V)/vehicle to everything (V2X) communication).
- the IoT device 100f eg, sensor
- the IoT device 100f may communicate directly with other IoT devices (eg, sensor) or other wireless devices 100a to 100f.
- Wireless communication/connection may be established between the wireless devices (100a to 100f)/base station (120) and the base station (120)/base station (120).
- wireless communication/connection includes various methods such as uplink/downlink communication (150a), sidelink communication (150b) (or D2D communication), and inter-base station communication (150c) (e.g., relay, integrated access backhaul (IAB)).
- IAB integrated access backhaul
- This can be achieved through wireless access technology (e.g. 5G NR).
- wireless communication/connection 150a, 150b, 150c
- a wireless device and a base station/wireless device, and a base station and a base station can transmit/receive wireless signals to each other.
- wireless communication/connection 150a, 150b, and 150c may transmit/receive signals through various physical channels.
- various configuration information setting processes for transmitting/receiving wireless signals various signal processing processes (e.g., channel encoding/decoding, modulation/demodulation, resource mapping/demapping, etc.) , at least some of the resource allocation process, etc. may be performed.
- Figure 2 may show an example of a UE to which the implementation of the present specification is applied.
- the UE 100 includes a processor 102, a memory 104, a transceiver 106, one or more antennas 108, a power management module 141, a battery 142, a display 143, It may include a keypad 144, a Subscriber Identification Module (SIM) card 145, a speaker 146, and a microphone 147.
- SIM Subscriber Identification Module
- Processor 102 may be configured to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein. Processor 102 may be configured to control one or more other components of UE 100 to implement the descriptions, functions, procedures, suggestions, methods and/or operational flow diagrams disclosed herein.
- a layer of air interface protocols may be implemented in processor 102.
- Processor 102 may include an ASIC, other chipset, logic circuitry, and/or data processing devices.
- Processor 102 may be an application processor.
- the processor 102 may include at least one of a DSP, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem (modulator and demodulator).
- the memory 104 is operably coupled to the processor 102 and can store various information for operating the processor 102.
- Memory 104 may include ROM, RAM, flash memory, memory cards, storage media, and/or other storage devices.
- modules e.g., procedures, functions, etc.
- Modules may be stored in memory 104 and executed by processor 102.
- Memory 104 may be implemented within processor 102 or external to processor 102, in which case it may be communicatively coupled to processor 102 through various methods known in the art.
- Transceiver 106 is operatively coupled to processor 102 and can transmit and/or receive wireless signals.
- Transceiver 106 may include a transmitter and a receiver.
- Transceiver 106 may include baseband circuitry for processing radio frequency signals.
- the transceiver 106 may control one or more antennas 108 to transmit and/or receive wireless signals.
- the power management module 141 may manage power of the processor 102 and/or the transceiver 106.
- the battery 142 may supply power to the power management module 141.
- the display 143 may output results processed by the processor 102.
- Keypad 144 may receive input for use by processor 102.
- the keypad 144 may be displayed on the display 143.
- SIM card 145 is an integrated circuit for securely storing an International Mobile Subscriber Identity (IMSI) and associated keys, and may be used to identify and authenticate subscribers in mobile phone devices such as cell phones or computers. You can also store contact information on many SIM cards.
- IMSI International Mobile Subscriber Identity
- the speaker 146 may output sound-related results processed by the processor 102.
- Microphone 147 may receive sound-related input for use by processor 102.
- the UE may operate as a transmitting device in the uplink and as a receiving device in the downlink.
- the base station may operate as a receiving device in the UL and as a transmitting device in the DL.
- the base station may be referred to as Node B (Node B), eNode B (eNB), or gNB, and may not be limited to a specific form.
- each UE may include a communication device, a control device, a memory device, and additional components.
- a communication device may include communication circuitry and a transceiver.
- communications circuitry may include one or more processors and/or one or more memory.
- a transceiver may include one or more transceivers and/or one or more antennas.
- the control unit is electrically connected to the communication unit, memory unit and additional components and can control the overall operation of each UE.
- control device may control the electrical/mechanical operation of each UE based on programs/codes/commands/information stored in the memory device.
- the control device transmits information stored in the memory device to the outside (e.g., other communication devices) via a communication device through a wireless/wired interface, or to the outside (e.g., other communication devices) via a communication device through a wireless/wired interface.
- Information received from can be stored in a memory device.
- the additional component may include at least one of a power unit/battery, an input/output (I/O) device (e.g., an audio I/O port, a video I/O port), a drive device, and a computing device.
- I/O input/output
- the UE is not limited to this, but includes robots (100a in FIG. 1), vehicles (100b-1 and 100b-2 in FIG. 1), XR devices (100c in FIG. 1), portable devices (100d in FIG. 1), and home appliances.
- Products (100e in Figure 1), IoT devices (100f in Figure 1), digital broadcasting terminals, hologram devices, public safety devices, MTC devices, medical devices, fintech devices (or financial devices), security devices, and climate/environment devices.
- It can be implemented in the form of an AI server/device (400 in FIG. 1), a base station (200 in FIG. 1), and a network node.
- the UE can be used in a mobile or fixed location depending on the usage/service.
- a control device may be comprised of a set of one or more processors.
- the control device may be composed of a set of a communication control processor, an application processor (AP), an electronic control unit (ECU), a graphics processing unit, and a memory control processor.
- the memory device may be comprised of RAM, Dynamic RAM (DRAM), ROM, flash memory, volatile memory, non-volatile memory, and/or a combination thereof.
- the 5G system is an advanced technology from the 4th generation LTE mobile communication technology. It is an evolution of the existing mobile communication network structure or a new radio access technology (RAT) and LTE (Long-State) through a clean-state structure. As an extended technology of Term Evolution, it supports eLTE (extended LTE), non-3GPP (e.g., WLAN) access, etc.
- RAT new radio access technology
- LTE Long-State
- eLTE extended LTE
- non-3GPP e.g., WLAN
- the 5G system is defined as service-based, and the interaction between network functions (NF) within the architecture for the 5G system can be expressed in two ways as follows.
- NF network functions
- NF - Reference point representation Interaction between NF services within NFs described by a point-to-point reference point (e.g., N11) between two NFs (e.g., AMF and SMF) indicates.
- a point-to-point reference point e.g., N11
- two NFs e.g., AMF and SMF
- Network functions eg, AMF
- CP control plane
- This expression also includes point-to-point reference points if necessary.
- 5GC may include various components, some of which include access and mobility management function (AMF), session management function (SMF), and policy control function. (policy control function, PCF), user plane function (UPF), application function (AF), unified data management (UDM), and non-3GPP interworking function (N3IWF).
- AMF access and mobility management function
- SMF session management function
- policy control function policy control function
- PCF user plane function
- UPF user plane function
- AF application function
- UDM unified data management
- N3IWF non-3GPP interworking function
- the UE is connected to the data network via UPF through NG-RAN (next generation radio access network) including gNB.
- NG-RAN next generation radio access network
- the UE may be provided with data services through an untrusted non-3GPP access, for example, a wireless local area network (WLAN).
- WLAN wireless local area network
- N3IWF may be deployed.
- N3IWF performs the function of managing non-3GPP access and interworking between 5G systems. If the UE is connected to a non-3GPP access (e.g. WiFi aka IEEE 802.11), the UE can connect to the 5G system via N3IWF. N3IWF performs control signaling with AMF and is connected to UPF through the N3 interface for data transmission.
- a non-3GPP access e.g. WiFi aka IEEE 802.11
- N3IWF performs control signaling with AMF and is connected to UPF through the N3 interface for data transmission.
- AMF can manage access and mobility in 5G systems.
- AMF can perform the function of managing NAS (non-access stratum) security.
- AMF may perform the function of handling mobility in an idle state.
- UPF performs the function of a gateway to transmit and receive user data.
- the UPF node can perform all or part of the user plane functions of S-GW (serving gateway) and P-GW (packet data network gateway) of 4th generation mobile communication.
- UPF operates as a boundary point between the next generation radio access network (next generation RAN, NG-RAN) and the core network, and is an element that maintains the data path between gNB and SMF. Additionally, when the UE moves across the area served by the gNB, the UPF serves as a mobility anchor point. UPF can perform the function of handling PDUs. For mobility within NG-RAN (e.g. NG-RAN defined in 3GPP Release-15 and later), UPF can route packets. Additionally, UPF can be used in other 3GPP networks (e.g., RAN defined before 3GPP Release-15), e.g., universal mobile telecommunications system (UMTS) terrestrial radio access network (UTRAN), evolved-UTRAN (E-UTRAN), or GERAN. It may also function as an anchor point for mobility with (global system for mobile communication (GSM)/enhanced data rates for global evolution (EDGE) radio access network). UPF may correspond to the termination point of the data interface toward the data network.
- GSM global
- PCF is a node that controls the operator's policy.
- AF is a server that provides various services to the UE.
- UDM is a server that manages subscriber information, like HSS (home subscriber server) in 4th generation mobile communication.
- UDM 460 stores and manages subscriber information in a unified data repository (UDR).
- UDR unified data repository
- the SMF may perform the function of allocating the IP (Internet protocol) address of the UE. And, SMF can control protocol data unit (PDU) sessions.
- IP Internet protocol
- PDU protocol data unit
- reference numerals for AMF, SMF, PCF, UPF, AF, UDM, N3IWF, gNB, or UE may be omitted, and the operation is performed by referring to matters described in standard documents published before this document. can do.
- FIG. 3 is a diagram illustrating an example of the structure of a wireless communication system applied to the present disclosure expressed from a node perspective.
- the UE is connected to a data network (DN) through the next generation RAN.
- the control plane function (CPF) node is all or part of the functions of the mobility management entity (MME) of 4th generation mobile communication, and all of the control plane functions of the serving gateway (S-GW) and PDN gateway (P-GW). Or do some of it.
- CPF nodes include AMF and SMF.
- the UPF node functions as a gateway through which user data is transmitted and received.
- the authentication server function (AUSF) authenticates and manages the UE.
- the Network Slice Selection Function (NSSF) is a node for network slicing as will be described later.
- the network exposure function provides a mechanism to securely expose the services and functions of the 5G core.
- N1 represents a reference point between UE and AMF.
- N2 represents a reference point between (R)AN and AMF.
- N3 represents a reference point between (R)AN and UPF.
- N4 represents the reference point between SMF and UPF.
- N5 represents the reference point between PCF and AF.
- N6 represents the reference point between UPF and DN.
- N7 represents the reference point between SMF and PCF.
- N8 represents a reference point between UDM and AMF.
- N9 represents a reference point between UPFs.
- N10 represents a reference point between UDM and SMF.
- N11 represents a reference point between AMF and SMF.
- N12 represents the reference point between AMF and AUSF.
- N13 represents the reference point between UDM and AUSF.
- N14 represents a reference point between AMFs.
- N15 represents the reference point between the PCF and the AMF in a non-roaming scenario, and the reference point between the AMF and the PCF of the visited network in the roaming scenario.
- N16 represents a reference point between SMFs.
- N22 represents a reference point between AMF and NSSF.
- N30 represents the reference point between PCF and NEF.
- N33 may represent a reference point between AF and NEF, and the above-described entities and interfaces may be configured with reference to matters described in standard documents published prior to this document.
- N58 represents a reference point between AMF and NSSAAF.
- N59 represents a reference point between UDM and NSSAAF.
- N80 represents a reference point between AMF and NSACF.
- N81 represents a reference point between SMF and NSACF.
- the air interface protocol is based on the 3GPP wireless access network standard.
- the air interface protocol consists of a physical layer, a data link layer, and a network layer horizontally, and a user plane and control signal for data information transmission vertically. It is divided into a control plane for signaling transmission.
- Protocol layers are L1 (layer-1), L2 (layer-2), and L3 (layer-3) based on the lower three layers of the open system interconnection (OSI) standard model, which is widely known in communication systems. It can be divided into:
- Figure 4 is a diagram showing an example of the structure of a radio interface protocol between a UE and a gNB.
- the access stratum (AS) layer includes a physical (PHY) layer, a medium access control layer, a radio link control (RLC) layer, and a packet data convergence protocol (PDCP) layer.
- PHY physical
- RLC radio link control
- PDCP packet data convergence protocol
- RRC radio resource control
- the terminal can perform a security procedure.
- the terminal can select and connect to a core network (eg 5GC, EPC), and different security procedures can be performed based on the selected core network.
- a core network eg 5GC, EPC
- the terminal and the network can perform primary authentication and key agreement procedures for mutual authentication.
- the terminal and network complete primary authentication, Can be created and stored in AUSF (authentication server function).
- AUSF authentication server function
- FIG. 5 is a diagram showing a method of starting an authentication procedure applicable to the present disclosure.
- a security anchor function (SEAF) 1020 may perform an authentication procedure with the terminal 510.
- SEAF may be a partial function of AMF, but is not limited to a specific embodiment.
- the terminal 510 and SEAF 520 may perform an authentication procedure in the procedure for establishing a signaling connection based on the SEAF policy.
- the terminal 510 may transmit an N1 message including a subscription concealed identifier (SUCI) or a globally unique temporary identifier (5G-GUTI) to the SEAF 520.
- SEAF 520 may transmit an authentication request message (e.g. Nausf_UEAuthentication_Authenticate Request) including SUCI or SUPI (subscriber permanent identifier) and serving network name (SN-name) information to AUSF 530.
- SUCI subscription concealed identifier
- 5G-GUTI globally unique temporary identifier
- SEAF 520 may transmit an authentication request message (e.g. Nausf_UEAuthentication_Authenticate Request) including SUCI or SUPI (subscriber permanent identifier) and serving network name (SN-name) information to AUSF 530.
- AUSF 530 can determine whether the terminal is roaming, which will be described later.
- the SEAF 520 has a valid 5G-GUTI and can transmit an authentication request message including SUPI when re-authenticating the terminal.
- the AUSF 530 may check whether the requesting SEAF 520 within the serving network is entitled to use the serving network name. Here, if SEAF 520 is not qualified, AUSF 530 may transmit a response indicating disqualification to SEAF 520.
- the AUSF 530 may transmit a request message (e.g. Nudm_UEAuthentication_Get Request) to user data management (UDM)/authentication credential repository and processing function (ARPF) 540.
- the request message may include SUCI or SUPI and serving network name information. For example, when UDM/ARPF 540 receives SUCI, UDM/ARPF 540 may obtain SUPI from SUCI. Afterwards, UDM/ARPF 540 can select an authentication method.
- a terminal When a terminal performs a mutual authentication procedure to access a network, in a new communication system (e.g. 5G system), mutual authentication between the terminal and the network can be performed using the 5G AKA (authentication key agreement) method or the EAP AKA' method. there is.
- 5G AKA authentication key agreement
- EAP AKA' method EAP AKA' method
- FIG. 6 is a diagram showing a method of performing authentication based on the EAP AKA' method applicable to the present disclosure.
- user data management (UDM)/authentication credential repository and processing function (ARPF) 640 may generate an authentication vector (authentication vector, AV). Afterwards, the UDM/ARPF 640 calculates CK' and IK' based on the cipher key (CK) and integrity key (IK), and calculates AV' including RAND, AUTN, XRES, CK' and IK'. It can be transmitted to AUSF (authentication server function, 630).
- AUSF authentication server function
- the UDM/ARPF 640 may transmit AV’ to the AUSF 630 as an authentication response to the authentication request from the AUSF 630.
- the AUSF 630 may request authentication from the UDM/ARPF 640 based on the terminal's authentication request, but is not limited to the above-described embodiment.
- the above-described authentication response may further include at least one of SUPI, AKMA indicator, and routing indicator based on the authentication request of the AUSF 630, but is not limited to the above-described embodiment.
- the AUSF 630 may transmit an EAP request and an AKA'-Challenge to the security anchor function (SEAF) 620 based on AV'.
- AKA’-Challenge may be a value generated based on the root key of the user ID.
- SEAF 620 may transmit an authentication request message including an EAP request and AKA'-Challenge to the terminal 610 through a NAS message.
- the authentication request message may further include ngKSI and ABBA parameters.
- ngKSI may be a value for identifying the security context created when the terminal 610 and AMF succeed in authentication.
- the terminal 610 When the terminal 610 receives the authentication request message, the terminal 610 generates an AUTN using the same algorithm as the network using a key held by the terminal, and performs authentication based on whether the generated AUTN and the received AUTN are the same. It can be done. Afterwards, the terminal 610 may transmit an authentication response including an EAP response and an AKA'-Challenge to the SEAF 620 based on the value generated through the held key. SEAF (620) also transmits an authentication response including an EAP response and an AKA'-Challenge to AUSF (630), and AUSF (630) performs authentication by verifying the value generated by the terminal, so that mutual authentication can be performed. You can. Afterwards, additional authentication between the AUSF 630 and the terminal 610 may be performed, but may not be limited to this.
- FIG. 7 is a diagram showing a method of performing authentication based on the 5G AKA’ method applicable to the present disclosure.
- the UDM/ARPF 740 can generate an authentication vector (AV).
- the authentication vector may be 5G HE AV, and 5G HE AV may be generated through RAND, AUTN, XRES*, and K_AUSF.
- UDM/ARPF 740 can deliver 5G HE AV to AUSF 730.
- the UDM/ARPF 740 may deliver 5G HE AV to the AUSF 730 as an authentication response to the authentication request from the AUSF 730.
- the AUSF 730 may request authentication from the UDM/ARPF 740 based on the terminal's authentication request, but is not limited to the above-described embodiment.
- the above-described authentication response may further include at least one of SUPI, AKMA indicator, and routing indicator based on the authentication request of the AUSF 730, but is not limited to the above-described embodiment.
- AUSF 730 may generate 5G AV based on 5G HE AV. At this time, AUSF 730 can calculate HXRES* through XRES* and K_SEAF through K_AUSF. AUSF 730 can generate 5G AV by replacing XRES* with HXRES* and K_AUSF with K_SEAF in 5G HE AV. Afterwards, AUSF (730) generates 5G SE AV including RAND, AUTH, and HXRES* and delivers it to SEAF (720), and SEAF (720) sends RAND and AUTN to the terminal (710) through a NAS message.
- An authentication request message containing As an example, the authentication request message may further include ngKSI and ABBA parameters.
- ngKSI may be a value for identifying the security context created when the terminal 710 and AMF succeed in authentication.
- the terminal 710 can generate an AUTN using the same algorithm as the network using a key held by the terminal and perform authentication based on whether it is the same.
- the terminal 710 may generate a RES* value using the key it possesses and transmit an authentication response including RES* to the SEAF 720.
- SEAF 720 can calculate HRES* based on RES* and compare whether it is the same as the above-described HXRES*. If the two values are the same, SEAF 720 determines that authentication is successful and may transmit an authentication response including RES* to AUSF 730. When the AUSF 730 receives an authentication response including RES*, it can recognize that mutual authentication is performed.
- FIG. 8 is a diagram showing the hierarchical structure of keys applicable to the present disclosure.
- a cipher key (CK) and an integrity key (IK) can be generated based on K (key).
- K key
- CK' and IK' are calculated from CK and IK
- AV' including RAND, AUTN, XRES, CK' and IK' is converted to AUSF. by passing it on can be created.
- SEAF is Through the can be created, by can be created.
- at least one of the various keys of FIG. 8 may be generated, which may be as shown in FIG. 8 .
- FIG. 9 is a diagram showing the AKMA key hierarchy applicable to the present disclosure.
- authentication and key management for applications may be a system that can generate a security key (application key) needed when an application and a terminal perform encrypted communication.
- the security key is the mutual authentication of the terminal and the mobile communication network and the network root key ( ) can be created based on.
- the network (AUSF) and the terminal each use a root key that can be used to generate an application key later. can be created, A-KID, which can refer to , can also be created.
- the generated AUSF can be passed to AAnF (AKMA anchor function).
- AUSF responds to AKMA anchor key registration requests with SUPI, A-KID, and It can be transmitted to AAnF, and an AKMA anchor key registration response can be received from AAnF.
- the terminal from can be created in advance.
- the terminal may request the AF (application function) to create an application session including the A-KID.
- the terminal and AF may be connected based on the Ua interface.
- AF can verify the A-KID included in the application session creation request and check the corresponding security context. As an example, if a corresponding security context does not exist, AF tells AAnF a new You can make a creation request for . Afterwards, AAnF launched a new based on You can create You can set the expiration time and reply to AF together.
- FIG. 10 is a diagram illustrating a method for establishing an application session according to an embodiment of the present disclosure.
- the AUSF 1030 may request information and methods required for authentication from unified data management (UDM) 1040.
- the AUSF (1030) can check whether an AKMA anchor key needs to be generated based on the response received from the UDM (1040). That is, the UDM 1040 may provide the AUSF 1030 with information about whether an AKMA anchor key must be generated when performing a response. As an example, information about whether an AKMA anchor key needs to be generated may be indicated based on the “AKMA Ind” value.
- the AUSF 1030 can generate an AKMA anchor key. If the “AKMA Ind” value is included in the response of the UDM (1040), the response may also include the RID for the terminal and may be transmitted to the AUSF (1030) along with the “AKMA Ind” value.
- AUSF 1030 can select AAnF (1050) through the function of “Search and select AAnF” after the AKMA anchor key is created.
- AUSF (1030) generates A-KID and can be transmitted to AAnF (1050) along with the terminal's SUPI. Afterwards, AAnF 1050 may send a response to AUSF 1030 to indicate that the procedure is terminated.
- Terminal 1010 is and A-KID can be created before starting the AKMA application, and the generated A-KID can be delivered when requesting an application service from the AF (1060).
- the terminal 1010 Can be created before or after sending the request message.
- AF (1060) does not have context related to the received A-KID
- AF (1060) sends the A-KID to AAnF (1050) You can request.
- AF 1060 may transmit a request including AF_ID.
- AAnF 1050 can perform procedures to provide services to AF.
- AAnF 1050 may abort a procedure and is not limited to a particular embodiment.
- AAnF (1050) is related to A-KID. It is possible to verify whether AKMA can be used by the presence of . Matches AAnF(1050) If exists, AAnF (1050) can perform procedures to provide services to AF (1060). Here, AAnF(1050) is If you do not have AAnF(1050), can be created. Afterwards, AAnF (1050) generates SUPI with AF (1060). , and An expiration time can be passed. Here, the AF 1060 may notify the terminal of completion of application session creation, and data transmission may be performed based on the application session.
- AAnF 1050 may send an error response to AF 1060.
- the AF (1060) can notify the terminal including the cause of the failure, and the terminal can request the AF (1060) for AKMA with the most recent A-KID for a new application session.
- the expiration time may expire. here, expires, and different operations may be performed based on whether data received from the terminal 1010 through the application session is received.
- Figure 11 is a diagram showing an AAnF selection and search procedure applicable to the present disclosure.
- the AF 1140 may transmit a request to the AAnF 1120 through a network exposure function (NEF) 1130, and the request message may include A-KID and AF_ID.
- the NEF 1130 may perform an AAnF 1120 selection procedure based on the request message and transmit a request message including A-KID and AF_ID to the selected AAnF 1120.
- NEF 1130 generates SUPI from the selected AAnF 1130.
- a response message including the expiration time may be received and delivered to the AF 1130, and subsequent operations are as described above.
- Figure 12 is a diagram showing a method of starting AKMA applicable to the present disclosure.
- the terminal 1210 may transmit an AKMA-related request to the AF 1220.
- the AKMA-related request may or may not include AKMA-related parameters.
- the AF 1220 may transmit an AKMA initial message to the terminal 1210, which Through this, the terminal 1210 can recognize the AKMA service and operate as described above.
- FIG. 13 is a diagram showing a method for removing an AKMA context applicable to the present disclosure.
- NF 1310 may trigger AKMA context deletion within AANF 1320 based on local policy.
- the NF (1310) can discover the AANF (1320) of the terminal and transmit a removal request message (e.g. Naanf_AKMA_Context_Remove request) to the AANF (1320).
- AANF 1320 may receive a removal request message from NF 1310 and delete KAKMA and A-KID based on SUPI. Afterwards, AANF 1320 may transmit a removal response message (e.g. Naanf_AKMA_Context_Remove response) to NF 1310.
- a removal response message e.g. Naanf_AKMA_Context_Remove response
- AKMA may be a system that allows an application and a terminal to generate a security key (application key) required when performing encrypted communication. Specifically, it may be a system that allows generating a security key based on mutual authentication between the terminal and the mobile communication network and the network root key (KAUSF) generated after performing the authentication.
- AKMA service may be provided in HPLMN (home public land mobile network) as a home network, but is supported when the terminal connects to VPLMN (visited PLMN) as a visited network. It may not work. However, in a situation where the terminal uses the application server of the HPLMN after connecting to the VPLMN, the AKMA service may be required, and this is described below.
- HPLMN home public land mobile network
- VPLMN visitor PLMN
- the network root key (generated after the terminal succeeds in primary authentication) ) Based on this, the network and terminal use a root key that can be used to generate an application security key in the future.
- A-KID which can refer to , can also be created, as described above.
- Generated by AUSF can be delivered to AAnF. Additionally, the terminal from can be created in advance. Afterwards, the terminal may request AF to create an application session including the A-KID. AF can verify the A-KID included in the application session creation request and confirm the existence of a corresponding security context. As an example, if a security context does not exist, AF tells AAnF a new You can request creation of . AAnF is new cast It can be created based on After setting the expiration time of and validity period information can be transmitted to AF.
- the above-described operation can be applied when both the terminal and the AF exist in a home network (HPLMN).
- HPLMN home network
- a method of receiving services based on the AKMA system may be necessary.
- operation for the AKMA service may be required.
- the terminal can register an AKMA key not only in HPLMN but also in the AAnF of the VPLMN to utilize the AKMA service in both HPLMN and VPLMN.
- the specific method for this is described below. Describe.
- Figure 14 is a diagram showing a method of registering an AKMA key with AAnF of a VPLMN applicable to the present disclosure.
- the terminal 1430 may transmit a message including SUCI or 5G-GUTI to the AMF 1440.
- the message delivered to the AMF 1440 may be an N1 message.
- SEAF may transmit an authentication request message (eg Nausf_UEAuthentication_Authenticate Request) to the AUSF (1450) for the authentication procedure.
- SEAF may be a partial function of AMF, but is not limited thereto.
- Terminal authentication service can be performed through the above-described information.
- the authentication request message (eg Nausf_UEAuthentication_Authenticate Request) transmitted from SEAF to AUSF 1450 may include SUCI or SUPI and a serving network name.
- the AUSF 1450 can determine whether the terminal is roaming through the serving network name included in the authentication request message (eg Nausf_UEAuthentication_Authenticate Request), which will be described later. Afterwards, the AUSF (1450) may transmit a message (eg Nudm_UEAuthentication_Get Request service operation) requesting information and method required for authentication to the UDM (1460). Here, the above-described message may include SUCI or SUPI. Thereafter, when the UDM 1460 responds to the AUSF 1450, the terminal 1430, if AKMA service is needed, can indicate whether to generate an AKMA anchor key by including AKMA Ind in the reply message.
- the authentication request message eg Nausf_UEAuthentication_Authenticate Request
- the AUSF (1450) may transmit a message (eg Nudm_UEAuthentication_Get Request service operation) requesting information and method required for authentication to the UDM (1460).
- the above-described message may include SUCI or SUPI.
- the UDM 1460 may include the RID (Routing Indicator) for the terminal 1430 in the response message and transmit it to the AUSF 1450.
- RID Ring Indicator
- AUSF 1450 receives AKMA Ind from UDM 1460, AUSF 1450 and save Based on AKMA anchor key ( ) and A-KID can be created.
- the terminal 1430 also has an AKMA anchor key ( ) and A-KID can be created.
- the authentication procedure may be performed based on the authentication method, and the authentication method may be the same as Figure 6 or 7 described above, but is not limited to a specific embodiment.
- the AUSF (1450) can indicate to the AMF (or SEAF, 1440) whether the authentication procedure was successful through a response (eg Nausf_UEAuthentication_Authenticate Response).
- a response including EAP success, anchor key, and SUPI may be transmitted from EAP AKA' to SEAF.
- the results in 5G AKA, SUPI and A response containing may be delivered to SEAF.
- the AUSF 1450 may select the AAnF 1470 of the HPLMN through an AAnF discovery and selection procedure after generating the AKMA anchor key. Afterwards, AUSF (1450) generates the A-KID and AKMA anchor key ( ) can be sent to HPLMN's AAnF (1470) along with the terminal's SUPI. That is, the AUSF (1450) may transmit an AKMA anchor key registration request message (eg Naanf_AKMA_anchorkey_Register Request) to the AAnF (1470).
- an AKMA anchor key registration request message eg Naanf_AKMA_anchorkey_Register Request
- the AKMA anchor key registration request message (eg Naanf_AKMA_anchorkey_Register Request) contains the generated A-KID, AKMA anchor key ( ) and the SUPI of the terminal.
- the AAnF (1470) of the HPLMN may notify the AUSF (1450) of registration completion in response. That is, the AAnF 1470 of the HPLMN may transmit an AKMA anchor key registration response message (eg Naanf_AKMA_anchorkey_Register Response) to the AUSF 1450.
- the AAnF 1420 of the VPLMN can be found based on a network repository function (NRF) discovery and selection procedure or local configuration. .
- NRF performs a function that tells which network functions are located where, and through this, the AAnF (1420) of the VPLMN can be searched.
- the response of the AUSF (1450) eg Nausf_UEAuthentication_ Authenticate Response
- A-KID may further be included.
- AUSF (1450) is the AKMA anchor key ( ) and A-KID can be transmitted to SEAF of VPLMN.
- the AUSF 1450 can determine whether the terminal is roaming through the serving network name of the authentication request message (eg Nausf_UEAuthentication_Authenticate Request).
- the VPLMN's AMF 1440 may then select an AAnF instance based on the NRF discovery and selection procedure or local configuration. Afterwards, the AMF (1440) of the VPLMN uses the A-KID and AKMA anchor key ( ) can be transmitted along with the terminal's SUPI. That is, the AMF 1440 of the VPLMN may transmit an AKMA anchor key registration request message (eg Naanf_AKMA_anchorkey_Register Request) to the AAnF 1420 of the VPLMN.
- the AKMA anchor key registration request message (eg Naanf_AKMA_anchorkey_Register Request) contains the generated A-KID, AKMA anchor key ( ) and the SUPI of the terminal.
- the AAnF 1420 of the VPLMN may notify the AMF 1440 of the VPLMN of registration completion through a response. That is, the AAnF 1420 of the VPLMN may transmit an AKMA anchor key registration response message (eg Naanf_AKMA_anchorkey_Register Response) to the AMF 1440 of the VPLMN. That is, the AMF (1440) of the VPLMN starts with the AUSF (1450) of the HPLMN, the A-KID and AKMA anchor key ( ) is obtained, and through this, a key registration procedure can be performed with the AAnF (1420) of the VPLMN.
- AKMA anchor key registration response message eg Naanf_AKMA_anchorkey_Register Response
- the terminal can request establishment of an application session while delivering the A-KID generated in the primary authentication process to the AF located in the VPLMN or HPLMN that requires the service.
- the AF can determine whether the request is a service for a roaming terminal through the received A-KID, which will be described later.
- a security key (application key) may be requested from the AAnF 1420 of the VPLMN discovered through the NRF discovery and selection procedure or local configuration, as shown in FIG. 14. More specifically, the terminal 1430 may transmit an application session establishment request to the AF 1410 of the VPLNM based on the Ua interface.
- the application session establishment request may include A-KID. If the VPLMN's AF (1410) does not have a security context related to the received A-KID, the VPLMN's AF (1410) sends the A-KID to the VPLMN's AAnF (1420) You can request.
- the AF 1410 of the VPLMN may make a request to the AAnF 1420 of the VPLMN, including the AF_ID of the terminal. Afterwards, if the AAnF (1420) of the VPLMN can provide service to the AF (1410) of the VPLMN, can be created and passed. On the other hand, if the VPLMN's AAnF (1420) is unable to provide service to the VPLMN's AF (1410), the procedure can be stopped. Specifically, VPLMN's AAnF (1420) is related to A-KID. It is possible to verify whether AKMA can be used by the presence of .
- the AAnF (1420) of the VPLMN is If there is no can be created. Afterwards, the AAnF (1420) of the VPLMN generates SUPI with the AF (1410) of the VPLMN. and An expiration time can be passed. Afterwards, the AF 1410 of the VPLMN may notify the terminal 1430 of the completion of the application session. When an application session is created, the terminal and the application can communicate through the session.
- the security key can be requested through the AAnF (1570) of the HPLMN retrieved through the NRF discovery and selection procedure or local configuration, as shown in FIG. 15. More specifically, the terminal 1530 may transmit an application session establishment request to the AF 1580 of the HPLNM based on the Ua interface.
- the application session establishment request may include A-KID. If the HPLMN's AF (1580) does not have a security context related to the received A-KID, the HPLMN's AF (1580) sends the A-KID to the HPLMN's AAnF (1570) request.
- the AF (1580) of the HPLMN may make a request to the AAnF (1570) of the HPLMN, including the AF_ID of the terminal. Afterwards, the HPLMN's AAnF (1570) can provide services to the HPLMN's AF (1580). can be created and passed. On the other hand, if HPLMN's AAnF (1570) is unable to provide service to HPLMN's AF (1580), the procedure can be stopped. Specifically, HPLMN's AAnF (1570) is related to A-KID. It is possible to verify whether AKMA can be used by the presence of .
- HPLMN's AAnF(1570) is created previously. If there is no can be created. Afterwards, HPLMN's AAnF (1570) generates SUPI with HPLMN's AF (1580). and An expiration time can be passed. Afterwards, the AF 1580 of the HPLMN may notify the terminal 1530 of the completion of the application session. When an application session is created, the terminal and the application can communicate through the session.
- FIG. 16 is a diagram showing an A-KID applicable to the present disclosure.
- the AF can determine whether the request is a service for a roaming terminal through the received A-KID.
- A-KID may be configured in the format of “username@realm”.
- AF determines whether the terminal is a roaming terminal through “realm” information, which means home network identifier, and the network ID (e.g. PLMN ID, network name) of the operator with which AF has entered into a service agreement. can be judged.
- the home network identifier of “realm” is the same as the operator with which a service agreement has been concluded, it can be determined to be an AKMA service within HPLMN.
- the home network identifier of “realm” is different from the operator with which the service agreement was concluded, it can be determined that it is the AKMA service of the roaming terminal.
- a security key application key
- the RID of A-KID and the home network identifier can be used.
- selection may be performed based on RID between the hNRF of the home network and the vNRF of the visited network.
- the RID may be information obtained from UDM, and accordingly, the RID of HPLMN and the RID of VPLMN may be different. Therefore, when using the RID of A-KID based on HPLMN, an incorrect AAnF instance can be searched.
- the serving PLMN ID and home network ID may be additionally utilized along with the A-KID.
- the serving PLMN ID can be recognized through IP address range information and other information used by the terminal, and is not limited to a specific form.
- A-KID may be newly defined in AKMA.
- the existing A-KID format may be “username@realm”.
- A-KID may be in the format of “RID + A-TID @ home network Identifier”.
- the serving PLMN ID can be added to the username and used when finding an AAnF instance through NRF in the VPLMN.
- A-KID can be used together with Table 1 below.
- the serving PLMN ID can be filled with a specific initial value (e.g. 000 000 or 000 00), and is not limited to a specific embodiment.
- FIG. 17 is a diagram showing an AKMA key registration method applicable to the present disclosure.
- the terminal and AUSF can each generate A-KID and KAKMA during primary authentication.
- the AUSF can determine whether the terminal is roaming based on the serving network name received through the N1 message based on primary authentication triggering.
- S1720 Here, if the terminal is not a roaming terminal, AUSF can perform a key registration procedure to AAnF in HPLMN.
- S1730 On the other hand, if the terminal is a roaming terminal, AUSF can transmit the AKMA anchor key to AMF of VPLMN. (S1740) After that, to HPLMN.
- the key registration procedure can be performed on the AAnF in the VPLMN, and the key registration procedure can also be performed on the AAnF in the VPLMN (S1750). For example, the order of the key registration procedure in each network may be irrelevant.
- a session can be created when an application session request is made to the AF in the VPLMN.
- the HPLMN's AUSF can determine whether the terminal is roaming and directly perform a key registration procedure with the VPLMN's AAnF to register the AKMA anchor key.
- FIG. 18 is a flowchart for AMF operation applicable to the present disclosure.
- the AMF can receive a message based on primary authentication from the terminal (S1810).
- the message is a subscription concealed identifier (SUCI) or a globally unique temporary identifier (5G-GUTI). It may include any one of the following. Additionally, as an example, the message may be an N1 message, but is not limited to a specific embodiment.
- AMF may transmit an authentication request message including SUCI or SUPI (subscriber permanent identifier) and serving network name (SN-name) to AUSF (authentication server function).
- SUPI subscriber permanent identifier
- SN-name serving network name
- the AMF may receive an authentication response message from the AUSF.
- the authentication response message is an AKMA anchor. It may include an A-KID indicating the key and the AKMA anchor key.
- AMF may perform the AKMA anchor key registration procedure with AAnF (AKMA anchor function) based on SUPI, AKMA anchor key, and A-KID (S1840).
- AMF may be the AMF for a visited public land mobile network (VPLMN), and AAnF may be the AAnF of the VPLMN.
- AUSF is the AUSF of HPLMN (home PLMN), and the AUSF can perform the AAnF and AKMA anchor key registration procedures of HPLMN based on the AKMA anchor key and A-KID regardless of whether the terminal is roaming.
- the AUSF of HPLMN can determine whether the terminal is a roaming terminal based on the serving network name.
- the AUSF of the HPLMN may transmit an authentication message including an AKMA anchor key and an A-KID indicating the AKMA anchor key to the AMF for the VPLMN.
- the AMF for the VPLMN can perform the VPLMN's AAnF and AKMA anchor key registration procedures.
- an application key may be provided to the terminal based on the AAnF of the VPLMN.
- the application key may be provided to the terminal based on the AAnF for the HPLMN.
- the application session request transmitted by the roaming terminal includes the A-KID, and the AF can determine whether the terminal is a roaming terminal based on the A-KID.
- the AF can request an application key from the AAnF of the VPLMN to obtain the application key and application key validity time information derived from the AKMA anchor key to establish an application session with the terminal. there is.
- the AF can request the application key through HPLMN's AAnF to obtain the application key and application key validity time information derived from the AKMA anchor key to establish an application session with the terminal. there is.
- AMF for VPLMN is based on a network repository function (NRF) discovery and selection procedure or local configuration through a routing indicator (RID) and a home network identifier in A-KID.
- NRF network repository function
- RID routing indicator
- A-KID home network identifier
- the AMF for the VPLMN may further utilize the serving PLMN ID (serving PLMN ID) to select the AAnF of the VPLMN.
- the A-KID further includes a serving PLMN ID, but if the terminal is a roaming terminal, the serving PLMN ID in the A-KID may indicate the VPLMN ID.
- the serving PLMN ID in A-KID may be set to a preset value, as described above.
- the AUSF may be instructed by unified data management (UDM) whether to support AKMA.
- UDM unified data management
- the AKMA anchor key and A-KID can be generated based on the network root key in each of the terminal and AUSF, as described above.
- Figure 19 is a diagram showing a terminal operation method applicable to this disclosure.
- the terminal may transmit a message based on primary authentication with an access and mobility management function (AMF) (S1910).
- the message is a subscription concealed identifier (SUCI) or 5G-GUTI (S1910). It may include any one of the globally unique temporary identifiers.
- SUCI subscription concealed identifier
- 5G-GUTI 5G-GUTI
- AKMA Authentication and Key Management for Applications
- an AKMA anchor key and an A-KID indicating the AKMA anchor key can be generated based on the network root key. (S1920)
- the terminal can complete authentication for the network.
- the AMF acquires the AKMA anchor key and the A-KID indicating the AKMA anchor key and AKMA anchor function (AAnF). You can perform the anchor key registration procedure.
- AMF may be the AMF for a visited public land mobile network (VPLMN), and AAnF may be the AAnF of the VPLMN.
- AUSF is the AUSF of HPLMN (home PLMN), and the AUSF can perform the AAnF and AKMA anchor key registration procedures of HPLMN based on the AKMA anchor key and A-KID regardless of whether the terminal is roaming.
- the AUSF of HPLMN can determine whether the terminal is a roaming terminal based on the serving network name.
- the AUSF of the HPLMN may transmit an authentication message including an AKMA anchor key and an A-KID indicating the AKMA anchor key to the AMF for the VPLMN.
- the AMF for the VPLMN can perform the VPLMN's AAnF and AKMA anchor key registration procedures.
- an application key may be provided to the terminal based on the AAnF of the VPLMN.
- the application key may be provided to the terminal based on the AAnF for the HPLMN.
- the application session request transmitted by the terminal includes the A-KID, and the AF can determine whether the terminal is a roaming terminal based on the A-KID.
- the AF can request an application key from the AAnF of the VPLMN to obtain the application key and application key validity time information derived from the AKMA anchor key to establish an application session with the terminal. there is.
- the AF can request the application key through HPLMN's AAnF to obtain the application key and application key validity time information derived from the AKMA anchor key to establish an application session with the terminal. there is.
- AMF for VPLMN is based on a network repository function (NRF) discovery and selection procedure or local configuration through a routing indicator (RID) and a home network identifier in A-KID.
- NRF network repository function
- RID routing indicator
- A-KID home network identifier
- the AMF for the VPLMN may further utilize the serving PLMN ID (serving PLMN ID) to select the AAnF of the VPLMN.
- the A-KID further includes a serving PLMN ID, but if the terminal is a roaming terminal, the serving PLMN ID in the A-KID may indicate the VPLMN ID.
- the serving PLMN ID in A-KID may be set to a preset value, as described above.
- the AUSF may be instructed by unified data management (UDM) whether to support AKMA.
- UDM unified data management
- the AKMA anchor key and A-KID can be generated based on the network root key in each of the terminal and AUSF, as described above.
- examples of the proposed methods described above can also be included as one of the implementation methods of the present disclosure, and thus can be regarded as a type of proposed methods. Additionally, the proposed methods described above may be implemented independently, but may also be implemented in the form of a combination (or merge) of some of the proposed methods.
- a rule may be defined so that the base station informs the terminal of the application of the proposed methods (or information about the rules of the proposed methods) through a predefined signal (e.g., a physical layer signal or a higher layer signal). .
- Embodiments of the present disclosure can be applied to various wireless access systems.
- Examples of various wireless access systems include the 3rd Generation Partnership Project (3GPP) or 3GPP2 system.
- Embodiments of the present disclosure can be applied not only to the various wireless access systems, but also to all technical fields that apply the various wireless access systems. Furthermore, the proposed method can also be applied to mmWave and THz communication systems using ultra-high frequency bands.
- embodiments of the present disclosure can be applied to various applications such as free-running vehicles and drones.
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Abstract
Description
Claims (18)
- 무선 통신 시스템에서 AMF(access and mobility management function)의 동작 방법에 있어서,단말로부터 1차 인증(primary authentication)에 기초한 메시지를 수신하는 단계로서, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고;상기 메시지에 기초하여 상기 SUCI 또는 SUPI(subscriber permanent identifier)와 서빙 네트워크 네임(SN-name)을 포함하는 인증 요청 메시지를 AUSF(authentication server function)로 전송하는 단계; 및상기 AUSF로부터 인증 응답 메시지를 수신하는 단계를 포함하되,상기 단말이 로밍된 단말이고 AKMA(Authentication and Key Management for Applications)가 지원되는 경우, 상기 인증 응답 메시지는 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 포함하고,상기 AMF는 상기 SUPI, 상기 AKMA 앵커 키 및 상기 A-KID에 기초하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, 동작 방법.
- 제1 항에 있어서,상기 단말이 로밍된 단말인 경우, 상기 AMF는 VPLMN(visited public land mobile network)에 대한 AMF이고, 상기 AAnF는 VPLMN의 AAnF인, 동작 방법.
- 제2 항에 있어서,상기 AUSF는 HPLMN(home PLMN)의 AUSF이고, 상기 AUSF는 상기 단말의 로밍 여부와 무관하게 상기 AKMA 앵커 키 및 상기 A-KID에 기초하여 상기 HPLMN의 AAnF와 AKMA 앵커 키 등록 절차를 수행하는, 동작 방법.
- 제3 항에 있어서,상기 HPLMN의 AUSF는 상기 서빙 네트워크 네임에 기초하여 상기 단말이 상기 로밍된 단말인지 여부를 판단하고,상기 단말이 상기 로밍된 단말인 경우, 상기 HPLMN의 AUSF는 상기 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 포함하는 상기 인증 메시지를 상기 VPLMN에 대한 AMF로 전송하고,상기 VPLMN에 대한 AMF는 상기 VPLMN의 AAnF와 상기 AKMA 앵커 키 등록 절차를 수행하는, 동작 방법.
- 제4 항에 있어서,상기 로밍된 단말이 VPLMN의 AF(application function)로 어플리케이션 세션 생성 요청을 전송하는 경우, 상기 VPLMN의 AAnF에 기초하여 어플리케이션 키가 상기 단말로 제공되고,상기 로밍된 단말이 HPLMN의 AF로 어플리케이션 세션 생성 요청을 전송하는 경우, 상기 HPLMN에 대한 AAnF에 기초하여 어플리케이션 키가 상기 단말로 제공되는, 동작 방법.
- 제5 항에 있어서,상기 단말이 전송하는 상기 어플리케이션 세션 요청에는 상기 A-KID가 포함되고, AF는 상기 A-KID에 기초하여 상기 단말이 상기 로밍된 단말인지 여부를 판단하는, 동작 방법.
- 제6 항에 있어서,상기 단말이 상기 로밍된 단말로 판단된 경우, 상기 AF는 상기 VPLMN의 AAnF로 상기 어플리케이션 키를 요청하여 상기 AKMA 앵커 키로부터 도출되는 상기 어플리케이션 키 및 어플리케이션 키 유효 시간 정보를 획득하여 상기 단말과 어플리케이션 세션 설립을 수행하는, 동작 방법.
- 제6 항에 있어서,상기 단말이 상기 로밍되지 않는 단말로 판단된 경우, 상기 AF는 상기 HPLMN의 AAnF로 상기 어플리케이션 키를 요청하여 상기 AKMA 앵커 키로부터 도출되는 상기 어플리케이션 키 및 어플리케이션 키 유효 시간 정보를 획득하여 상기 단말과 어플리케이션 세션 설립을 수행하는, 동작 방법.
- 제2 항에 있어서,상기 VPLMN에 대한 AMF는 NRF(network repository function) 발견 및 선택 절차 또는 로컬 구성(local configuration)에 기초하여 상기 A-KID 내의 RID(routing indicator)와 홈 네트워크 식별자(home network identifier)를 통해 상기 VPLMN의 AAnF를 선택하는, 동작 방법.
- 제9 항에 있어서,상기 VPLMN에 대한 AMF는 서빙 PLMN ID(serving PLMN ID)를 더 활용하여 상기 VPLMN의 AAnF를 선택하는, 동작 방법.
- 제10 항에 있어서,상기 A-KID는 상기 서빙 PLMN ID를 더 포함하되,상기 단말이 상기 로밍된 단말이 경우, 상기 A-KID 내의 상기 서빙 PLMN ID는 상기 VPLMN ID를 지시하고,상기 단말이 로밍되지 않은 단말인 경우, 상기 A-KID 내의 상기 서빙 PLMN ID는 기 설정된 값으로 설정되는, 동작 방법.
- 제1 항에 있어서,상기 단말과 상기 AUSF가 상기 1차 인증을 수행하는 경우, 상기 AUSF는 UDM(unified data management)로부터 상기 AKMA 지원 여부를 지시받고,상기 AKMA를 지원하는 경우, 상기 단말과 상기 AUSF 각각에서 네트워크 루트 키에 기초하여 상기 AKMA 앵커 키 및 상기 A-KID가 생성되는, 동작 방법.
- 제1 항에 있어서,상기 단말로부터 수신하는 상기 1차 인증(primary authentication)에 기초한 메시지는 N1 메시지인, 동작 방법.
- 무선 통신 시스템에서 동작하는 AMF(access and mobility management function)에 있어서,적어도 하나의 송수신기;적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 동작 가능하도록 연결되고, 실행될 경우 상기 적어도 하나의 프로세서가 특정 동작을 수행하도록 하는 명령들(instructions)을 저장하는 적어도 하나의 메모리를 포함하고,상기 특정 동작은:단말로부터 1차 인증(primary authentication)에 기초한 메시지를 수신하도록 상기 적어도 하나의 송수신기를 제어하되, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고,상기 메시지에 기초하여 상기 SUCI 또는 SUPI(subscriber permanent identifier)와 서빙 네트워크 네임(SN-name)을 포함하는 인증 요청 메시지를 AUSF(authentication server function)로 전송하도록 상기 적어도 하나의 송수신기를 제어하고, 및상기 AUSF로부터 인증 응답 메시지를 수신하도록 상기 적어도 하나의 송수신기를 제어하되,상기 단말이 로밍된 단말이고 AKMA(Authentication and Key Management for Applications)가 지원되는 경우, 상기 인증 응답 메시지는 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 포함하고,상기 AMF는 상기 SUPI, 상기 AKMA 앵커 키 및 상기 A-KID에 기초하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, AMF.
- 무선 통신 시스템에서 단말 동작 방법에 있어서,1차 인증(primary authentication)에 기초한 메시지를 AMF(access and mobility management function)로 전송하는 단계로서, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고; 및상기 단말이 AKMA(Authentication and Key Management for Applications)를 지원하는 경우, 네트워크 루트 키에 기초하여 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 생성하는 단계; 및네트워크에 대한 인증을 완료하는 단계를 포함하되,상기 단말이 로밍된 단말인 경우, 상기 AMF는 상기 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 상기 A-KID를 획득하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, 동작 방법.
- 무선 통신 시스템에서 동작하는 단말에 있어서,적어도 하나의 송수신기;적어도 하나의 프로세서; 및상기 적어도 하나의 프로세서에 동작 가능하도록 연결되고, 실행될 경우 상기 적어도 하나의 프로세서가 특정 동작을 수행하도록 하는 명령들(instructions)을 저장하는 적어도 하나의 메모리를 포함하고,상기 특정 동작은:1차 인증(primary authentication)에 기초한 메시지를 AMF(access and mobility management function)로 전송하도록 상기 적어도 하나의 송수신기를 제어하되, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고; 및상기 단말이 AKMA(Authentication and Key Management for Applications)를 지원하는 경우, 네트워크 루트 키에 기초하여 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 생성하고, 및네트워크에 대한 인증을 완료하되,상기 단말이 로밍된 단말인 경우, 상기 AMF는 상기 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 상기 A-KID를 획득하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, 단말.
- 적어도 하나의 메모리 및 상기 적어도 하나의 메모리들과 기능적으로 연결되어 있는 적어도 하나의 프로세서를 포함하는 장치에 있어서,상기 적어도 하나의 프로세서는 상기 장치가,단말로부터 1차 인증(primary authentication)에 기초한 메시지를 수신하도록 제어하되, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고,상기 메시지에 기초하여 상기 SUCI 또는 SUPI(subscriber permanent identifier)와 서빙 네트워크 네임(SN-name)을 포함하는 인증 요청 메시지를 AUSF(authentication server function)로 전송하도록 제어하고, 및상기 AUSF로부터 인증 응답 메시지를 수신하도록 제어하되,상기 단말이 로밍된 단말이고 AKMA(Authentication and Key Management for Applications)가 지원되는 경우, 상기 인증 응답 메시지는 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 포함하고,상기 AMF는 상기 SUPI, 상기 AKMA 앵커 키 및 상기 A-KID에 기초하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, 장치.
- 적어도 하나의 명령어(instructions)을 저장하는 비-일시적인(non-transitory) 컴퓨터 판독 가능 매체(computer-readable medium)에 있어서,프로세서에 의해 실행 가능한(executable) 상기 적어도 하나의 명령어를 포함하며,상기 적어도 하나의 명령어는, 장치가단말로부터 1차 인증(primary authentication)에 기초한 메시지를 수신하도록 제어하되, 상기 메시지는 SUCI(subscription concealed identifier) 또는 5G-GUTI(globally unique temporary identifier) 중 어느 하나를 포함하고,상기 메시지에 기초하여 상기 SUCI 또는 SUPI(subscriber permanent identifier)와 서빙 네트워크 네임(SN-name)을 포함하는 인증 요청 메시지를 AUSF(authentication server function)로 전송하도록 제어하고, 및상기 AUSF로부터 인증 응답 메시지를 수신하도록 제어하되,상기 단말이 로밍된 단말이고 AKMA(Authentication and Key Management for Applications)가 지원되는 경우, 상기 인증 응답 메시지는 AKMA 앵커 키 및 상기 AKMA 앵커 키를 지시하는 A-KID를 포함하고,상기 AMF는 상기 SUPI, 상기 AKMA 앵커 키 및 상기 A-KID에 기초하여 AAnF(AKMA anchor function)로 AKMA 앵커 키 등록 절차를 수행하는, 컴퓨터 판독 가능 매체.
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| EP23839734.3A EP4557791A4 (en) | 2022-07-14 | 2023-02-07 | METHOD AND DEVICE FOR TERMINAL AUTHENTICATION IN A WIRELESS COMMUNICATION SYSTEM |
| US18/993,495 US20260025656A1 (en) | 2022-07-14 | 2023-02-07 | Method and device for terminal authentication in wireless communication system |
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| WO2025156400A1 (en) * | 2024-03-28 | 2025-07-31 | Zte Corporation | Method, device and system for akma roaming control in communication networks |
| WO2025236134A1 (zh) * | 2024-05-11 | 2025-11-20 | 北京小米移动软件有限公司 | 通信方法、终端、网络设备及存储介质 |
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| WO2022035369A1 (en) * | 2020-08-13 | 2022-02-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Authentication in a communication network |
| WO2022146014A1 (en) * | 2020-12-29 | 2022-07-07 | Samsung Electronics Co., Ltd. | Method and system of enabling akma service in roaming scenario |
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2023
- 2023-02-07 EP EP23839734.3A patent/EP4557791A4/en active Pending
- 2023-02-07 WO PCT/KR2023/001695 patent/WO2024014640A1/ko not_active Ceased
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| WO2021155758A1 (zh) * | 2020-02-04 | 2021-08-12 | 华为技术有限公司 | 密钥获取方法及装置 |
| WO2022035369A1 (en) * | 2020-08-13 | 2022-02-17 | Telefonaktiebolaget Lm Ericsson (Publ) | Authentication in a communication network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025156400A1 (en) * | 2024-03-28 | 2025-07-31 | Zte Corporation | Method, device and system for akma roaming control in communication networks |
| WO2025236134A1 (zh) * | 2024-05-11 | 2025-11-20 | 北京小米移动软件有限公司 | 通信方法、终端、网络设备及存储介质 |
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| US20260025656A1 (en) | 2026-01-22 |
| EP4557791A1 (en) | 2025-05-21 |
| EP4557791A4 (en) | 2026-01-14 |
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