公开(公告)号：US20210076400A1

公开(公告)日：2021-03-11

申请号：US16950608

申请日：2020-11-17

Applicant: Apple Inc.

Inventor： Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Haitong Sun ,  Wei Zeng ,  Yuchul Kim ,  Yuqin Chen

IPC: H04W72/12 ,  H04L5/14 ,  H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W80/08 ,  H04L25/02 ,  H04W74/08 ,  H04W76/27 ,  H04L27/26

Abstract: Apparatuses, systems, and methods for time division multiplexing of uplink communications using a first wireless link with a first radio access technology (RAT) and a second wireless link with a second RAT.

公开(公告)号：US20200260498A1

公开(公告)日：2020-08-13

申请号：US16781337

申请日：2020-02-04

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Yuqin Chen ,  Wei Zeng ,  Haitong Sun ,  Yuchul Kim

IPC: H04W74/08 ,  H04W72/04 ,  H04W52/36

Abstract: Apparatuses, systems, and methods for a wireless device to perform 2-step random access procedures. The disclosure identifies features of 2-step random access procedures including configuration (e.g., under what circumstances to use 2-step vs. 4-step random access), message design, fallback procedures, power ramping, backoff, and retransmission procedures.

公开(公告)号：US20200260463A1

公开(公告)日：2020-08-13

申请号：US16782465

申请日：2020-02-05

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy ,  Fangli Xu ,  Yuqin Chen ,  Haijing Hu ,  Srinivasan Nimmala ,  Longda Xing ,  Dawei Zhang ,  Sree Ram Kodali

IPC: H04W72/08 ,  H04W72/04 ,  H04W24/10 ,  H04W88/06 ,  H04W36/14 ,  H04W76/15 ,  H04W36/00

Abstract: Various radio resource management techniques may be implemented to reduce in-device coexistence issues and/or interference between a Uu link established between a mobile device (first UE) and a base station (first NB), and a sidelink/PC5 link established between the first UE and another mobile device (second UE), where the second UE is served by a different base station (second NB). The first UE may receive, from the first NB, measurement configuration information that enables/configures the first UE to report to the NB any indication(s) of issues caused by communications between the first UE and the second UE over the PC5 link affecting communications between the first UE and the first NB over the Uu link, and/or communications over the Uu link affecting communications over the PC5 link. The first NB may analyze the feedback from the first UE and may implement mitigation measures to reduce/eliminate any interference and/or in-device-coexistence issues.

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：US20200186290A1

公开(公告)日：2020-06-11

申请号：US16582081

申请日：2019-09-25

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Wanping Zhang ,  Fangli Xu ,  Haitong Sun ,  Pengkai Zhao ,  Jia Tang ,  Wei Zeng ,  Yuqin Chen ,  Haijing Hu ,  Sami M. Almalfouh ,  Dawei Zhang ,  Johnson O. Sebeni

IPC: H04L1/00 ,  H04L5/00 ,  H04W72/12

Abstract: Groupcast communications between devices of a group of devices, e.g. between vehicles in a platoon, may include a device in the group transmitting a groupcast message in a sidelink transmission to the other devices and receiving feedback information in sidelink transmissions from the other devices within the same channel occupancy time (CoT). The feedback information may be transmitted by the other devices in response to the groupcast message including an information request directed to the other devices. The group of devices may include a designated group leader which may manage one or more aspects of the communications of the other devices in the group. The designated group leader may be dynamically switched based at least on the received feedback information. The devices in the group may use beamforming for intra-group and inter-group sidelink communications for efficient spectrum usage.

公开(公告)号：US20200084818A1

公开(公告)日：2020-03-12

申请号：US16553427

申请日：2019-08-28

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Rohit R. Matolia ,  Vijay Venkataraman ,  Dawei Zhang ,  Haijing Hu ,  Yuqin Chen ,  Sethuraman Gurumoorthy ,  Srirang A. Lovlekar ,  Murtaza A. Shikari ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Xu Ou ,  Longda Xing

IPC: H04W76/18 ,  H04W48/02 ,  H04W48/04 ,  H04W36/00

Abstract: This disclosure relates to techniques for efficiently handling connection rejections. A wireless device may detect barring conditions in response to receiving one or more connection rejections. The wireless device may bar one or more connections based on the barring conditions, and may attempt to access network services over one or more other connections.

公开(公告)号：US20250119780A1

公开(公告)日：2025-04-10

申请号：US18871989

申请日：2022-10-31

Applicant: Apple Inc.

Inventor： Yuqin Chen ,  Fangli Xu ,  Haijing Hu

IPC: H04W24/10 ,  H04B17/318 ,  H04W84/06

Abstract: The present application relates to devices and components including apparatus, systems, and methods for performing measurements before a radio link failure. In an example, a condition is detected by a UE in advance of a time point in which a non-terrestrial network (NTN) node is to stop providing service to the UE. The condition can be a timing-based condition related to, for example, t-service, a location-based condition related to, for example, a reference location, a coverage hole, and/or a timer condition. The UE can perform, in advance of the time point, a radio resource management (RRM) measurement in an attempt to measure a neighbor cell based on the condition.

公开(公告)号：US12267747B2

公开(公告)日：2025-04-01

申请号：US17896544

申请日：2022-08-26

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Haijing Hu ,  Longda Xing ,  Murtaza A. Shikari ,  Sethuraman Gurumoorthy ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Yuqin Chen

IPC: H04W4/40 ,  H04W36/00 ,  H04W36/30 ,  H04W68/00 ,  H04W72/044 ,  H04W76/10 ,  H04W76/27

Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform methods for network assisted side-link resource configuration for unicast and/or multi-cast/groupcast communications in V2X networks. A UE may, after establishing an RRC connection with a base station, transmit, to the base station, V2X connection information. The V2X connection information may include a V2X identifier associated with the UE and a V2X identifier associated with a target UE. The UE may receive, from the base station, a side-link configuration for data transmission with the target UE. The side-link configuration may include a resource allocation defined in time and frequency (e.g., a transmit/receive pool). The UE may communicate with the target UE using the resource allocation included in the side-link configuration.

公开(公告)号：US12253611B2

公开(公告)日：2025-03-18

申请号：US17438324

申请日：2021-08-04

Applicant: Apple Inc.

Inventor： Pavan Nuggehalli ,  Fangli Xu ,  Alexander Sirotkin ,  Chunxuan Ye ,  Haijing Hu ,  Naveen Kumar R. Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Yuqin Chen ,  Zhibin Wu

IPC: G01S19/25 ,  H04M15/00 ,  H04W76/20 ,  H04W84/04 ,  H04W84/06

Abstract: The present application relates to devices and components including apparatus, systems, and methods for ephemeris signaling in wireless networks.

公开(公告)号：US12245320B2

公开(公告)日：2025-03-04

申请号：US17593697

申请日：2021-08-04

Applicant: APPLE INC.

Inventor： Pavan Nuggehalli ,  Alexander Sirotkin ,  Fangli Xu ,  Haijing Hu ,  Naveen Kumar R Palle Venkata ,  Ralf Rossbach ,  Sarma V. Vangala ,  Sethuraman Gurumoorthy ,  Yuqin Chen ,  Zhibin Wu

IPC: H04W52/02 ,  H04W8/02 ,  H04W60/04 ,  H04W76/27 ,  H04W76/28 ,  H04W76/30

Abstract: The functions of user equipment (UE), radio access network (RAN) devices, and core network (CN) devices in circumstances where a UE is expected to experience discontinuous coverage are described herein. A UE may send a CN a non-access stratum (NAS) message including a release request indicating that a UE is leaving coverage and assistance information. The CN may interrupt paging of the UE and resume the paging according to the assistance information. A UE may enter a low power usage mode upon leaving coverage, and may use one or more timers to determine when to check for coverage and send a mobility update message corresponding to the low power usage mode. A base station may receive, from a UE, a radio resource control (RRC) message comprising a release request and assistance information, send an RRC release message to the UE in response, and forward the assistance information to the CN.