公开(公告)号：US11272391B2

公开(公告)日：2022-03-08

申请号：US16475817

申请日：2018-01-18

Applicant: APPLE INC.

Inventor： Yujian Zhang ,  Sudeep Palat ,  Jing Zhu ,  Wey-Yi Guy ,  Youn Hyoung Heo

IPC: H04W28/06 ,  H04W28/02 ,  H04W76/27 ,  H04L1/00 ,  H04W80/02 ,  H04L5/02 ,  H04J13/10 ,  H04W80/06

Abstract: An apparatus of a cellular data communication device includes one or more memory devices configured to store data corresponding to a plurality of service data units (SDUs) from a protocol layer higher than a packet data convergence protocol (PDCP) layer of a cellular data network, and one or more processors operably coupled to the one or more memory devices and configured to concatenate the plurality of SDUs into a single protocol data unit (PDU) above the PDCP layer.

公开(公告)号：US11233725B2

公开(公告)日：2022-01-25

申请号：US15745890

申请日：2015-12-21

Applicant: APPLE INC.

Inventor： Yujian Zhang ,  Mo-Han Fong ,  Candy Yiu ,  Wey-Yi W. Guy ,  Umesh Phuyal ,  Youn Hyoung Heo

IPC: H04L12/707 ,  H04W28/08 ,  H04W80/02 ,  H04W28/02 ,  H04L12/801 ,  H04W88/06 ,  H04W36/00

Abstract: A network device (e.g., an evolved Node B (eNB), user equipment (UE) or the like) can operate to reduce an interruption time during a fallback operation resulting from a communication link blockage condition (e.g., a human blockage or other natural/physical wireless blockage). The network device includes a network convergence protocol (NCP) layer that enables communication between other network devices of different radio access technologies (RATs) in a heterogeneous network.

公开(公告)号：US11178613B2

公开(公告)日：2021-11-16

申请号：US15861538

申请日：2018-01-03

Applicant: Apple Inc.

Inventor： Kamran Etemad ,  Yujian Zhang

IPC: H04W52/02 ,  H04W48/16 ,  H04B7/06 ,  H04L12/709 ,  H04W52/14 ,  H04W76/40 ,  H04W36/00 ,  H04B7/0456 ,  H04L12/891 ,  H04W52/04 ,  H04L5/00 ,  H04W72/04 ,  H04W4/08 ,  H04L12/18 ,  H04W4/06 ,  H04W72/00 ,  H04W72/12 ,  H04W48/18 ,  H04W72/08 ,  H04B7/024 ,  H04B7/0417 ,  H04W76/34 ,  H04W76/28 ,  H04W84/04 ,  H04W52/54 ,  H04W28/10 ,  H04W52/24 ,  H04W52/36 ,  H04W48/12 ,  H04L25/02

Abstract: Embodiments of the present disclosure describe devices, methods, computer-readable media and systems configurations for management and/or support of multimedia broadcast multicast service (MBMS) service in a wireless communications network. An evolved Node B (eNB) may transmit MBMS assistance information to a user equipment (UE). The MBMS assistance information may identify a carrier by which one or more upcoming MBMS services are to be provided and an indicator of a carrier selection mode to be used by the UE. The UE may transmit an MBMS interest indication message including information related to one or more targeted MBMS services which the UE wants to receive.

公开(公告)号：US11147104B2

公开(公告)日：2021-10-12

申请号：US16409530

申请日：2019-05-10

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Seunghee Han ,  Gregory Morozov ,  Ansab Ali ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W74/08 ,  H04W72/04 ,  H04J11/00 ,  H04B7/08 ,  H04B7/0413 ,  H04B17/327 ,  H04L5/00

Abstract: Systems and methods of selecting a PRACH resource opportunity are described. One of multiple Synchronization Signal Blocks (SSBs) is received. Each SSB has PSSs, SSSs and a PBCH that contain system information. A RACH occasion (RO) is selected from among multiple ROs associated with the SSB. A PRACH is transmitted on resources of the RO. The ROs are configured in a TDM and/or FDM manner. The RO is selected randomly or, if TDM is used, an earliest of the ROs from a UE-initiated RACH transmission in a previous period. A preamble of the RO is selected randomly with equal probability.

公开(公告)号：US11044062B2

公开(公告)日：2021-06-22

申请号：US16510077

申请日：2019-07-12

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Gang Xiong ,  Yujian Zhang ,  Guotong Wang

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04W88/06 ,  H04W76/11 ,  H04W76/27 ,  H04L5/10 ,  H04W72/04 ,  H04W80/08

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive a physical downlink control channel (PDCCH) that schedules a physical downlink shared channel (PDSCH), wherein a cyclic redundancy check (CRC) of the PDCCH is scrambled by a radio network temporary identifier (RNTI). In some cases, if the RNTI that scrambles the PDCCH is a modulation coding scheme (MCS) cell RNTI (MCS-C-RNTI), cell RNTI (C-RNTI), or a configured scheduling RNTI (CS-RNTI), the UE may determine that: one or more PT-RSs are present in the PDSCH, a time density parameter of the PT-RSs is equal to one, and a frequency density of the PT-RSs is equal to two.

公开(公告)号：US10925010B2

公开(公告)日：2021-02-16

申请号：US16243856

申请日：2019-01-09

Applicant: Apple Inc.

Inventor： Narayan Vishwanathan ,  Yujian Zhang ,  Hong He ,  Seunghee Han ,  Youn Hyoung Heo

IPC: H04W52/36 ,  H04W72/04

Abstract: Systems, apparatus, user equipment (UE), evolved node B (eNB), and methods are described for generating an extended power headroom report (ePHR) based on an uncertainty associated with a physical downlink control channel communication granting an uplink grant for a physical uplink shared channel communication when the system is configured for simultaneous physical uplink shared channel and physical uplink control channel communications. Some embodiments are structured to generate the ePHR using a type 2 report regardless of the uncertainty associated with the ePHR, while other embodiments generate the ePHR using a reference format. In some embodiments, a UE communicates a timing field with a UE capability communication indicating whether the UE meets timing requirements to avoid uncertainty in ePHR communications.

公开(公告)号：US20200314679A1

公开(公告)日：2020-10-01

申请号：US16809990

申请日：2020-03-05

Applicant: APPLE INC.

Inventor： Youn Hyoung Heo ,  Yujian Zhang ,  Jong-Kae Fwu

IPC: H04W28/02 ,  H04W4/70 ,  H04W76/30 ,  H04W76/28 ,  H04W72/04 ,  H04W40/00 ,  H04W40/24 ,  H04W52/02 ,  H04W52/04 ,  H04B17/318 ,  H04W76/12 ,  H04W76/15 ,  H04W76/23 ,  H04W76/27 ,  H04J3/16 ,  H04J11/00 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04L12/24 ,  H04L29/06 ,  H04L29/08 ,  H04W8/08 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/08 ,  H04W28/16 ,  H04W36/00 ,  H04W36/22 ,  H04W48/16 ,  H04W48/20 ,  H04W52/14 ,  H04W72/02 ,  H04W72/08 ,  H04W72/12 ,  H04W74/00 ,  H04W88/02 ,  H04W76/16 ,  H04L12/26 ,  H04W36/14

Abstract: Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.

公开(公告)号：US12041487B2

公开(公告)日：2024-07-16

申请号：US17438656

申请日：2020-04-30

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Junaid Ansari ,  Marta Martinez Tarradell

IPC: H04W28/02 ,  H04W24/08 ,  H04W28/12 ,  H04W36/00

CPC classification number: H04W28/12 ,  H04W24/08

Abstract: A process for execution by user equipment (UE) for activation or deactivation of a Radio Link Control (RLC) entity for Packet Data Convergence Protocol (PDCP) duplication includes identifying a set of RLC entities that are configured by a Radio Resource Control (RRC) for communication using PDCP. The process includes, for each RLC entity of the set of RLC entities: determining a network configured offset value; determining a channel condition value; and determining an RLC entity level value based on a combination of the network configured offset value and the channel condition value. The process includes comparing the RLC entity level value for each RLC entity to a threshold value; and based on comparing the RLC entity level value to the threshold value, selecting a subset of RLC entities for PDCP duplication; and activating or deactivating PDCP duplication for the selected subset of RLC entities.

公开(公告)号：US12035373B2

公开(公告)日：2024-07-09

申请号：US17441185

申请日：2020-03-20

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yujian Zhang ,  Yushu Zhang ,  Sergey Sosnin ,  Seau S. Lim

IPC: H04W74/0833 ,  H04W72/1268 ,  H04W72/566 ,  H04W74/0836 ,  H04W74/0838

CPC classification number: H04W74/0833 ,  H04W72/1268 ,  H04W72/566

Abstract: A method for handling a Message A physical uplink shared channel (PUSCH) transmission in a random access channel (RACH) procedure for use in fifth generation new radio (5G NR) wireless communication system includes determining that the Message A PUSCH transmission in a first step of a two-step RACH procedure overlaps with at least one other uplink physical channel transmission and transmitting at least one of the Message A PUSCH transmission or the at least one other uplink physical channel transmission in accordance with a priority rule.

公开(公告)号：US12004247B2

公开(公告)日：2024-06-04

申请号：US17440035

申请日：2020-06-25

Applicant: Apple Inc.

Inventor： Jerome Parron ,  Yujian Zhang ,  Ozgur Oyman

IPC: H04L12/00 ,  H04L43/0829 ,  H04L43/0852 ,  H04W72/542 ,  H04W76/15

CPC classification number: H04W76/15 ,  H04L43/0835 ,  H04L43/0858 ,  H04W72/542

Abstract: Disclosed are methods, systems, apparatus, and computer programs for providing a network with assistance information from a user equipment (UE) that is participating in a multimedia telephony session. In one aspect, a method includes determining a connection parameter of a multimedia telephony session between a user equipment (UE) and a remote UE. The method further includes generating assistance information based on the connection parameter. Yet further, the method include sending, using a medium access control (MAC) control element, the assistance information to an access node (AN) serving the UE.