公开(公告)号：US20220278835A1

公开(公告)日：2022-09-01

申请号：US17437798

申请日：2020-04-03

Applicant: Apple Inc.

Inventor： Shu Guo ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Huarui Liang ,  Xiangying Yang ,  Yuqin Chen

IPC: H04L9/08 ,  H04W12/041

Abstract: Apparatuses, systems, and methods for application function (AF) key generation and AF key renewal. A user equipment device (UE) may communicate with an application function (AF) via a radio access network (RAN) using a first AF key and determine that the first AF key has expired. The UE may derive a second AF key based on at least an Architecture for Authentication and Key Management for Applications (AKMA) anchor key (KAKMA) and a counter parameter and communicate with the AF via the RAN using the second AF key. At least one of the UE, the AF, and/or an AKMA Anchor Function (AAnF) may be configured to monitor expiration of the first AF key based on an associated lifetime of the first AF key. The first and second AF keys may be derived using a key derivation function that includes at least one variable parameter.

公开(公告)号：US20220240079A1

公开(公告)日：2022-07-28

申请号：US17721166

申请日：2022-04-14

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Fangli Xu ,  Haijing Hu ,  Yuqin Chen ,  Dawei Zhang ,  Longda Xing ,  Zhiwei Wang ,  Yaoqi Yan ,  Muthukumaran Dhanapal ,  Huarui Liang

IPC: H04W8/18 ,  H04W48/18 ,  H04W88/06 ,  H04W12/72

Abstract: A user equipment (UE) includes first and second subscriber identity modules (SIMs), possibly subscribed to different carriers. When the first SIM is in a connected state and the second SIM is in an idle state, the UE may need to periodically tune away a radio from a first frequency used for communication under the first SIM to a second frequency used for idle mode activity under the second SIM. The UE may provide to the network of the first SIM the second SIMs traffic activity pattern and/or serving frequency so that the network may provide coordinated configuration and/or scheduling for the UE device, e.g., in order to make the action of tuning away (and tuning back) the radio more efficient and/or to decrease the network impact of such radio tune aways (e.g., to decrease wasted uplink scheduling and wasted downlink transmissions for the first SIM).

公开(公告)号：US11297492B2

公开(公告)日：2022-04-05

申请号：US17042859

申请日：2018-03-27

Applicant: Apple Inc.

Inventor： Xiangying Yang ,  Lijia Zhang ,  Dawei Zhang ,  Huarui Liang ,  Shu Guo ,  Rohan C. Malthankar ,  Krisztian Kiss

IPC: H04L29/06 ,  H04W12/02 ,  H04W12/00 ,  H04W12/04 ,  H04W12/72 ,  H04W12/0433 ,  H04W12/041 ,  H04W12/033 ,  H04W12/40

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.

公开(公告)号：US11184744B2

公开(公告)日：2021-11-23

申请号：US15755397

申请日：2015-08-28

Applicant: APPLE INC.

Inventor： Huarui Liang ,  Zhiwei Wang ,  Dawei Zhang

IPC: H04W4/14 ,  H04W8/06 ,  H04L29/06 ,  H04W8/18 ,  H04W84/04

Abstract: Described herein are apparatuses, systems and methods for enhancing short message service (“SMS”) over Internet protocol (“IP”). The methods including at, a user equipment (“UE”) connected to a network, receiving an indication from the network, wherein the indication identifies whether the network supports an SMS over IP session, when the indication identifies that the network supports the SMS over IP session, registering the UE for voice communication and the SMS over IP session with the network, and when the indication identifies that the network does not support the SMS over IP session, registering the UE for voice communication without the SMS over IP session with the network.

公开(公告)号：US20200235914A1

公开(公告)日：2020-07-23

申请号：US16733515

申请日：2020-01-03

Applicant: Apple Inc.

Inventor： Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Huarui Liang ,  Lijia Zhang ,  Robert K. Kitchens ,  Samuel D. Post ,  Shu Guo ,  Xiangying Yang ,  Yannick L. Sierra ,  Yuqin Chen

IPC: H04L9/06 ,  H04L29/06 ,  H04W12/06 ,  H04L9/08 ,  H04W12/04

Abstract: Apparatuses, systems, and methods for generating and utilizing improved initialization vectors (IVs) when performing encryption and authentication in wireless communications. In some scenarios, a wireless communication device may generate one or more pseudorandom multi-bit values, e.g., using a respective plurality of key derivation functions (KDFs). A first portion of each value may be used as a respective key for encryption or authentication of traffic on the user plane or the control plane. A second portion of each value may be used as a nonce value in a respective IV for use with a respective key for encryption or authentication of traffic on the user plane or the control plane. In some scenarios, the nonce values may instead be generated as part of an additional pseudorandom value (e.g., by executing an additional KDF), from which all of the IVs may be drawn.

公开(公告)号：US20180049209A1

公开(公告)日：2018-02-15

申请号：US15027492

申请日：2016-02-05

Applicant: Apple Inc.

Inventor： Haijing Hu ,  Dawei Zhang ,  Huarui Liang

IPC: H04W72/08 ,  H04W48/08 ,  H04W92/02 ,  H04W24/10 ,  H04W48/18

CPC classification number: H04W72/08 ,  H04W16/14 ,  H04W24/10 ,  H04W28/08 ,  H04W48/08 ,  H04W48/18 ,  H04W76/27 ,  H04W88/06 ,  H04W92/02

Abstract: This disclosure relates to techniques for managing and monitoring access to a cellular network using unlicensed spectrum. According to some embodiments, policy information indicating permissible and/or non-permissible uses of unlicensed spectrum to access a radio access network of the cellular network may be distributed to elements of the radio access network, such as base stations. A base station establishing a radio bearer with a wireless device may receive information regarding a service type associated with the radio bearer and may determine radio bearer characteristics, potentially including whether to establish the radio bearer using unlicensed or licensed spectrum, based at least in part on the service type associated with the radio bearer and the network policy information. The base station and/or the user device may also report information regarding unlicensed (and possibly also licensed) network access by the user device to a core network of the cellular network.

公开(公告)号：US09832686B2

公开(公告)日：2017-11-28

申请号：US14791687

申请日：2015-07-06

Applicant: Apple Inc.

Inventor： Farouk Belghoul ,  David Boettger ,  Krisztian Kiss ,  Dawei Zhang ,  Tarik Tabet ,  Rafael L. Rivera-Barreto ,  Huarui Liang

IPC: H04L12/28 ,  H04W36/00 ,  H04W76/04 ,  H04W48/16 ,  H04W36/14 ,  H04W48/18 ,  H04W88/06

CPC classification number: H04W36/0022 ,  H04W36/0083 ,  H04W36/14 ,  H04W48/16 ,  H04W48/18 ,  H04W76/27 ,  H04W88/06

Abstract: Mobile devices, base stations, and/or relay stations may implement CSFB (circuit switched fallback) operations by using RRC (radio resource control) connection release and/or handover procedures. If the CSFB RAT (radio access technology) target is not well configured, the UE may be informed and provisioned by the NW during a CSFB procedure with the information to return to LTE. Having this information, the UE may perform an autonomous search of LTE cells after the CSFB call release, speeding up return to LTE. To minimize potential call failures during CSFB, the UE may autonomously perform an additional cell search, in particular a search for cells on a RAT different from the initial target RAT. This creates an opportunity to prevent call failure of CSFB calls that would otherwise fail. The UE may be provisioned during the CSFB procedure with information to perform the additional cell search, should such a search be necessary.

公开(公告)号：US20170265057A1

公开(公告)日：2017-09-14

申请号：US15030159

申请日：2015-09-30

Applicant: Apple Inc.

Inventor： Dawei Zhang ,  Haijing Hu ,  Huarui Liang

IPC: H04W8/04 ,  H04W48/04 ,  H04L29/12 ,  H04W12/06 ,  H04W60/04

CPC classification number: H04W60/005 ,  H04L61/1511 ,  H04L61/1588 ,  H04W8/04 ,  H04W12/06 ,  H04W48/04 ,  H04W60/00 ,  H04W60/04 ,  H04W88/005 ,  H04W88/16

Abstract: Apparatuses, systems, and methods to perform attachment of a wireless device to a next generation gateway via either a base station of a next generation radio access network (RAN) or a mobility management entity of a legacy RAN. An apparatus may be configured to receive an attachment request from a wireless device, determine authentication information via communication with a home subscriber server, determine, based at least in part on the authentication information, whether the wireless device is capable of communicating via the next generation RAT, and send, in response to determining the wireless device is capable, a connection request to a gateway of the next generation RAN. The authentication information may include subscription information associated with the wireless device.

公开(公告)号：US09713154B2

公开(公告)日：2017-07-18

申请号：US15385551

申请日：2016-12-20

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Dawei Zhang ,  Huarui Liang

IPC: H04W72/04 ,  H04M11/06 ,  H04L5/00 ,  H04W8/00 ,  H04W72/12 ,  H04W84/12 ,  H04W88/06

CPC classification number: H04W72/0453 ,  H04L5/0048 ,  H04L5/0098 ,  H04L27/0006 ,  H04M11/062 ,  H04W8/005 ,  H04W72/0406 ,  H04W72/12 ,  H04W84/12 ,  H04W88/06 ,  H04W88/10

Abstract: This disclosure relates to Wi-Fi signaling in conjunction with cellular communication in unlicensed frequency bands for efficient co-existence. According to one embodiment, a cell may be established between a cellular base station and a wireless user equipment device on a frequency channel in an unlicensed frequency band. A cellular communication may be scheduled between the base station and the user equipment device. A Wi-Fi signal may be transmitted on the frequency channel in conjunction with the scheduled cellular communication. The Wi-Fi signal may indicate a length of the scheduled cellular communication using Wi-Fi signaling. The scheduled cellular communication may be performed via the cell.

公开(公告)号：US20150288475A1

公开(公告)日：2015-10-08

申请号：US14667745

申请日：2015-03-25

Applicant: Apple Inc.

Inventor： Tarik Tabet ,  Farouk Belghoul ,  Dawei Zhang ,  Huarui Liang

IPC: H04J11/00 ,  H04L25/02 ,  H04W48/16 ,  H04W24/08

CPC classification number: H04J11/0079 ,  H04J11/005 ,  H04L25/0204 ,  H04L25/0228 ,  H04W48/16

Abstract: This disclosure relates to performing cell measurements in unlicensed frequency bands and/or in channels with interference. According to some embodiments, a wireless user equipment (UE) device may define a reference symbol vector for a cell. Each respective element of the reference symbol vector may correspond to a respective subcarrier of the cell that carries a respective reference symbol. The UE may perform channel estimation at each respective element of the reference symbol vector. The UE may estimate the cell strength of the cell by cross-correlating channel estimates of different elements of the reference symbol vector.

Abstract translation: 本公开涉及在未经许可的频带和/或具有干扰的信道中执行小区测量。 根据一些实施例，无线用户设备（UE）设备可以定义小区的参考符号向量。 参考符号向量的每个相应元素可以对应于携带相应参考符号的小区的相应副载波。 UE可以在参考符号向量的每个相应元素处执行信道估计。 UE可以通过对参考符号向量的不同元素的信道估计进行相互相关来估计小区的小区强度。