公开(公告)号：US11272574B2

公开(公告)日：2022-03-08

申请号：US16938291

申请日：2020-07-24

Applicant: Apple Inc.

Inventor： Bharat Shrestha ,  Yujian Zhang

IPC: H04W88/06 ,  H04W80/02 ,  H04W72/10 ,  H04W76/27 ,  H04W72/12 ,  H04W28/02 ,  H04W72/14 ,  H04L5/00 ,  H04W72/04

Abstract: Embodiments of a User Equipment (UE) and methods of communication are generally described herein. The UE may, if a regular buffer status report (BSR) is triggered and a logical channel scheduling request (SR) delay timer is not running, and if available uplink shared channel (UL-SCH) data resources do not meet one or more logical channel prioritization (LCP) mapping restrictions configured for a logical channel of uplink data: trigger a scheduling request to request UL-SCH data resources for a new transmission of uplink data. Currently pending SRs and BSRs may not be cancelled after assembly of a medium access control (MAC) protocol data unit (PDU), but may be cancelled at a later time when a MAC PDU including a BSR is transmitted.

公开(公告)号：US11153795B2

公开(公告)日：2021-10-19

申请号：US16077455

申请日：2016-09-30

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Yujian Zhang ,  Youn Hyoung Heo ,  Sudeep Palat ,  Mo-Han Fong

IPC: H04W36/02 ,  H04W36/18 ,  H04W36/00

Abstract: User equipment (UE) handover (HO) techniques for reducing or eliminating interruption time during an HO process are described. In one embodiment, for example, an apparatus may include at least one memory and logic for an evolved node B (eNB), at least a portion of the logic comprised in hardware coupled to the at least one memory. The logic may be operative to forward downlink (DL) data received from a serving gateway (SGW) to user equipment (UE), transmit a handover command to the UE to trigger execution of a handover (HO) process to handover the UE to a target eNB, continue forwarding at least a portion of the DL data to the UE following transmission of the handover command, and terminate transmission of the DL data to the UE responsive to detecting a stop DL data event. Other embodiments are described and claimed.

公开(公告)号：US10966274B2

公开(公告)日：2021-03-30

申请号：US16316489

申请日：2017-08-08

Applicant: Apple Inc.

Inventor： Sudeep Palat ,  Yujian Zhang ,  Richard Burbidge ,  Ahmed Ibrahim ,  Youn Hyoung Heo ,  Ingolf Karls ,  Yang Yang ,  Miltiadis Filippou ,  Michael Faerber

IPC: H04W76/27 ,  H04W76/15 ,  H04W92/20

Abstract: Coordination of RRC configurations between an LTE NB and an NR NB in dual connectivity with a UE are performed using an RRC container that includes shared or coordinated parameters. For example, an NR NB determines to alter a configuration of a UE. The NR NB transmits a coordinated RRC container with coordinated UE parameters to an LTE NB and transmits a UE parameter RRC container to the LTE NB. The LTE NB evaluates the coordinated container for compliance with the UE capability. If satisfied, the LTE NB can send both containers (in a single RRC message or multiple RRC messages) to the UE.

公开(公告)号：US12302396B2

公开(公告)日：2025-05-13

申请号：US18233571

申请日：2023-08-14

Applicant: Apple Inc.

Inventor： Sudeep Palat ,  Yi Guo ,  Yujian Zhang ,  Seau Sian Lim

IPC: H04W74/0816 ,  H04W84/12

Abstract: Some demonstrative embodiments include devices, systems and/or methods of communication over common control channels. For example, an apparatus may include logic and circuitry configured to cause a User Equipment (UE) to determine a selected Common Control Channel (CCCH) message configuration from a first predefined message configuration and a second predefined message configuration, the first predefined message configuration having a first predefined message bit-size, the second predefined message configuration having a second predefined message bit-size; to generate an Uplink (UL) CCCH message according to the selected CCCH message configuration, the UL CCCH message comprising a Medium Access Control (MAC) header comprising a Logical Channel Identify (ID) (LCID) field having a value corresponding to the selected CCCH message configuration; and to transmit the UL CCCH message to a Next Generation Node B (gNB) over a logical channel corresponding to the selected CCCH message configuration.

公开(公告)号：US12267160B2

公开(公告)日：2025-04-01

申请号：US17420407

申请日：2020-01-08

Applicant: Apple Inc.

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

IPC: H04L1/00 ,  H04L5/00 ,  H04L27/26 ,  H04W88/06 ,  H04L5/10 ,  H04W72/044 ,  H04W76/11 ,  H04W76/27 ,  H04W80/08

Abstract: A user equipment wireless communication device in a wireless communication environment receives a signal from the network that includes a radio network temporary ID. From the radio network temporary ID, the user equipment is capable of determining whether a phase tracking reference signal is present based on the radio network temporary ID. If any of these are identified by the radio network temporary ID, then the user equipment determines that a phase tracking reference signal is present. After the user equipment has determined that the phase tracking reference signal is present, the user equipment can then determine which phase tracking reference signal antenna ports are to be used based on the values of the transmitted precoding matrix indicator value and the transmit rank indicator.

公开(公告)号：US12200512B2

公开(公告)日：2025-01-14

申请号：US17436125

申请日：2020-03-26

Applicant: Apple Inc.

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

IPC: H04W24/04 ,  H04W74/0833

Abstract: Techniques discussed herein can facilitate beam failure recovery (BFR) for a Secondary Cell (SCell) or Primary SCell (PSCell). One example embodiment comprises an apparatus configured to be employed in a User Equipment (UE), comprising: one or more processors configured to: generate a Physical Random Access Channel (PRACH) associated with a beam failure recovery request (BFRQ); generate a Physical Uplink Shared Channel (PUSCH) message associated with the BFRQ, wherein the PUSCH message comprises at least one Medium Access Control (MAC) Control Element (CE) that comprises one or more of an index associated with a cell for which beam failure was detected or an index associated with a new beam; and process a Physical Downlink Shared Channel (PDSCH) as a random access response (RAR) associated with the PRACH and the PUSCH message.

公开(公告)号：US12143846B2

公开(公告)日：2024-11-12

申请号：US18467407

申请日：2023-09-14

Applicant: APPLE INC.

Inventor： Yongjun Kwak ,  Gang Xiong ,  Hong He ,  Yujian Zhang ,  Debdeep Chatterjee ,  Honglei Miao ,  Bharat Shrestha

IPC: H04W24/08 ,  H04L5/00 ,  H04W72/12 ,  H04W76/28 ,  H04W84/04 ,  H04W88/02

Abstract: Technology for a user equipment (UE), operable for monitoring a physical downlink control channel (PDCCH) is disclosed. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein the predetermined monitoring occasion has a periodicity of P slots or P symbols with an offset Os. The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein Os has an offset with respect to a first slot in subframe number zero (SFN #0). The UE can monitor a downlink (DL) control channel for DL control information (DCI) at a predetermined monitoring occasion, wherein P is a positive integer greater than zero.

公开(公告)号：US20240214109A1

公开(公告)日：2024-06-27

申请号：US17420407

申请日：2020-01-08

Applicant: Apple Inc.

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

IPC: H04L1/00

CPC classification number: H04L1/0025 ,  H04L1/0004

Abstract: A user equipment wireless communication device in a wireless communication environment receives a signal from the network that includes a radio network temporary ID. From the radio network temporary ID, the user equipment is capable of determining whether a phase tracking reference signal is present based on the radio network temporary ID. If any of these are identified by the radio network temporary ID, then the user equipment determines that a phase tracking reference signal is present. After the user equipment has determined that the phase tracking reference signal is present, the user equipment can then determine which phase tracking reference signal antenna ports are to be used based on the values of the transmitted precoding matrix indicator value and the transmit rank indicator.

公开(公告)号：US20230309137A1

公开(公告)日：2023-09-28

申请号：US18202682

申请日：2023-05-26

Applicant: Apple Inc.

Inventor： Yujian Zhang ,  Youn Hyoung Heo

IPC: H04W72/56 ,  H04W76/18 ,  H04W76/10 ,  H04W76/19 ,  H04W76/15 ,  H04W36/00 ,  H04W4/90 ,  H04W28/08 ,  H04W72/51 ,  H04W72/52 ,  H04W72/542 ,  H04W24/10 ,  H04W48/06 ,  H04W74/00 ,  H04W48/08 ,  H04W48/18 ,  H04W28/02 ,  H04W48/12 ,  H04W8/00 ,  H04W52/34 ,  H04W56/00 ,  H04W72/0453 ,  H04B17/318 ,  H04W74/08 ,  H04W8/06 ,  H04W8/18 ,  H04W60/00 ,  H04W60/02 ,  H04J3/16 ,  H04L5/00 ,  H04W4/02 ,  H04W4/60 ,  H04W76/14 ,  H04W4/80

CPC classification number: H04W72/56 ,  H04W76/18 ,  H04W76/10 ,  H04W76/19 ,  H04W76/15 ,  H04W36/0069 ,  H04W4/90 ,  H04W28/08 ,  H04W72/51 ,  H04W72/52 ,  H04W72/542 ,  H04W24/10 ,  H04W48/06 ,  H04W74/004 ,  H04W48/08 ,  H04W48/18 ,  H04W28/0215 ,  H04W48/12 ,  H04W8/005 ,  H04W52/346 ,  H04W56/002 ,  H04W72/0453 ,  H04W56/001 ,  H04B17/318 ,  H04W74/0833 ,  H04W8/06 ,  H04W8/183 ,  H04W60/00 ,  H04W60/02 ,  H04J3/1694 ,  H04L5/0007 ,  H04W4/023 ,  H04W4/60 ,  H04W76/14 ,  H04W4/80 ,  H04W4/02 ,  H04L5/001 ,  H04L5/0098 ,  Y02D30/70 ,  H04W92/20

Abstract: Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.

公开(公告)号：US20220159760A1

公开(公告)日：2022-05-19

申请号：US17440035

申请日：2020-06-25

Applicant: Apple Inc.

Inventor： Jerome Parron ,  Yujian Zhang ,  Ozgur Oyman

IPC: H04W76/15 ,  H04L43/0852 ,  H04L43/0829 ,  H04W72/12

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 N 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.