Key obtaining method and device, and communications system

    公开(公告)号:US10904750B2

    公开(公告)日:2021-01-26

    申请号:US16383087

    申请日:2019-04-12

    Inventor: Jing Chen Kai Pan He Li

    Abstract: In a method for security handling in a mobility of a terminal device, a target access and mobility management function (AMF) entity receives a first message for registering a terminal device, sends a second message to a source AMF entity after receiving the first message. The source AMF entity derives a first key based on a key between the source AMF entity and the terminal device, sends the first key to the target AMF entity. The target AMF entity determines to use the first key based on security related information after receiving the first key and determines a communication key between the target AMF entity and the terminal device based on the first key after determining to use the first key.

    Communication method and device
    82.
    发明授权

    公开(公告)号:US10805793B2

    公开(公告)日:2020-10-13

    申请号:US16585978

    申请日:2019-09-27

    Abstract: The present disclosure discloses a communication method performed by a management function entity, including: receiving a first request message sent by user equipment UE; sending a second request message to a storage function entity based on the first request message, where the second request message is used to request a security service identifier for the UE, and the security service identifier is used to indicate a security service procedure; receiving a response message including the security service identifier from the storage function entity; obtaining a target security service identifier based on the security service identifier, where the target security service identifier is used to indicate a security service procedure to be initiated by the management function entity; and initiating the security service procedure indicated by the target security service identifier. The present disclosure further discloses a communications device.

    Method, related apparatus, and system for recovering called service of terminal

    公开(公告)号:US10735480B2

    公开(公告)日:2020-08-04

    申请号:US16146813

    申请日:2018-09-28

    Abstract: A method, a related apparatus, and a system for recovering a called service of a terminal are provided. The method includes: when a called request of a user terminal is received, querying an initial proxy-call session control function (P-CSCF) entity with which the user terminal currently registers; if it is detected that the initial P-CSCF is faulty, selecting an available P-CSCF and sending, to the available P-CSCF, a notification message that carries a redundancy identifier, where the redundancy identifier is used to instruct the available P-CSCF to trigger the user terminal to re-register with the P-CSCF; and when a registration complete message sent by the P-CSCF with which the user terminal re-registers is received, delivering the called request to the re-registered P-CSCF to bear a called service of the user terminal.

    Key Obtaining Method and Device, and Communications System

    公开(公告)号:US20190268753A1

    公开(公告)日:2019-08-29

    申请号:US16383087

    申请日:2019-04-12

    Inventor: Jing Chen Kai Pan He Li

    Abstract: In a method for security handling in a mobility of a terminal device; a target access and mobility management function (AMF) entity receives a first message for registering a terminal device, sends a second message to a source AMF entity after receiving the first message. The source AMF entity derives a first key based on a key between the source AMF entity and the terminal device, sends the first key to the target AMF entity. The target AMF entity determines to use the first key based on security related information after receiving the first key and determines a communication key between the target AMF entity and the terminal device based on the first key after determining to use the first key.

    Network Authentication Triggering Method and Related Device

    公开(公告)号:US20190253403A1

    公开(公告)日:2019-08-15

    申请号:US16388326

    申请日:2019-04-18

    Abstract: This application relates to the field of communications technologies, and discloses a network authentication triggering system, method and a related device. The method includes: receiving a first message from a terminal, where the first message carries first identity information and identifier information, the first identity information is encrypted identity information, and the identifier information is used to identify an encryption manner of the first identity information; and sending a second message to a first security function entity, where the second message is used to trigger authentication for the terminal, and the second message carries the identifier information. This application provides a solution of triggering an authentication process when identity information is encrypted.

    Processing method for terminal access to 3GPP network and apparatus

    公开(公告)号:US10278073B2

    公开(公告)日:2019-04-30

    申请号:US15890936

    申请日:2018-02-07

    Abstract: A processing method for terminal access to a 3GPP network is provided. A UE sends an access request message to a core network device on the 3GPP network, and the core network device sends an unauthorized access message to the UE after determining that the UE has no permission to access the 3GPP network. The unauthorized access message includes authentication information of the core network device. The UE performs authentication on the core network device according to the authentication information of the core network device, and executes a corresponding network access policy after authentication on the core network device by the UE succeeds, that is, after the UE determines that a source of the unauthorized access message is authorized.

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