SUBSCRIBER IDENTITY PRIVACY PROTECTION AND NETWORK KEY MANAGEMENT

    公开(公告)号:US20210021993A1

    公开(公告)日:2021-01-21

    申请号:US17042859

    申请日:2018-03-27

    Applicant: Apple Inc.

    Abstract: Techniques to protect subscriber identity in messages communicated between a user equipment (UE) and a cellular wireless network entity by using multiple ephemeral asymmetric keys are disclosed. The UE determines multiple ephemeral UE public and secret key pairs, while the cellular wireless network entity provides a network public key to the UE. The network public key may be updated over time. Multiple encryption keys based on the multiple ephemeral UE secret keys and the public network key are derived and used to encrypt a subscription permanent identifier (SUPI) to generate multiple subscription concealed identifiers (SUCIs). Each SUCI is used only once for messages communicated to a cellular wireless network and discarded after use. New SUCI are generated when the network public key is updated.

    METHODS AND APPARATUS TO SUPPORT NETWORK-BASED IP FLOW MOBILITY VIA MULTIPLE WIRELESS ACCESSES FOR A WIRELESS DEVICE

    公开(公告)号:US20200260516A1

    公开(公告)日:2020-08-13

    申请号:US16735541

    申请日:2020-01-06

    Applicant: Apple Inc.

    Inventor: Krisztian KISS

    Abstract: Apparatus and methods to support IP flow mobility (IFOM) via multiple wireless accesses in a wireless device are disclosed. The wireless device initiates network-based IFOM (NB-IFOM) to establish and manage IP flows. Support for NB-IFOM is negotiated during initial attach procedures to either or both wireless accesses and by using packet data network (PDN) connectivity procedures. The wireless device sends routing rules including priorities to apply to both existing and future IP flows or to future IP flows only. The wireless device requests to move IP flows from a source access to a target access. When a new wireless access is added to an existing PDN connection, an identical IP address for the wireless device is allocated as used for the existing PDN connection. The network establishes a GPRS tunneling protocol (GTP) tunnel for the new wireless access while maintaining a previously established GTP tunnel for the existing wireless access.

    TECHNIQUES FOR SUPPORTING EMERGENCY SHORT MESSAGE SERVICE (SMS) MESSAGES UNDER LIMITED-SERVICE SCENARIOS

    公开(公告)号:US20240267711A1

    公开(公告)日:2024-08-08

    申请号:US18540684

    申请日:2023-12-14

    Applicant: Apple Inc.

    CPC classification number: H04W4/14 H04W76/50 H04W4/90

    Abstract: This Application sets forth techniques for routing emergency (SMS) messages under limited-service scenarios. One technique can be implemented by a network entity associated with a mobile network operator (MNO), and include the steps of (1) receiving an SMS message from a wireless device, and (2) in response to determining that (i) the wireless device is communicatively coupled to the MNO under a limited-service connection due to being unaffiliated with the MNO, and (ii) a destination address of the SMS message corresponds to an emergency service: (a) identifying at least one emergency service provider that corresponds to the MNO, and (b) providing at least a portion of the SMS message to the emergency service provider.

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