公开(公告)号：US20250142504A1

公开(公告)日：2025-05-01

申请号：US18837318

申请日：2022-02-11

Applicant: APPLE INC.

Inventor： Jie Cui ,  Manasa Raghavan ,  Dawei Zhang ,  Yang Tang ,  Chunhai Yao ,  Qiming Li ,  Xiang Chen ,  Hong He ,  Yushu Zhang ,  Fangli Xu

IPC: H04W56/00 ,  H04B17/318 ,  H04W76/28

Abstract: Systems and methods for performing timing advance (TA) validation at a user equipment (UE) for a TA to be used when transmitting a configured grant small data transmission (CG-SDT). Mechanisms for bounding one or more measurement windows during which one or more synchronization signal blocks are measured during a reference signal received power (RSRP) measurement method of the TA validation are discussed, and may be set using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, and/or information about a UE discontinuous reception (DRX) cycle. Further, time interval limitations between various events attendant to such an RSRP measurement method are discussed as being determined using information corresponding to timing drift due to relativistic effects, clock differences between a UE and a base station, information about a DRX cycle used at the UE, and/or a maximum TA timer duration.

公开(公告)号：US12284016B2

公开(公告)日：2025-04-22

申请号：US18475468

申请日：2023-09-27

Applicant: Apple Inc.

Inventor： Manasa Raghavan ,  Jie Cui ,  Yushu Zhang ,  Andrey Chervyakov ,  Yang Tang

IPC: H04L27/00 ,  H04B7/06

Abstract: Techniques for changing a Transmission Configuration Indication (TCI) state by a user equipment (UE) operating in a wireless communications system are provided. The UE receives a first message including a TCI state change command from a network and determines, based on the first message, whether a time offset/frequency offset (TO/FO) and a reception (Rx) beam for a new TCI state are known by the UE. Based on the determination, the UE calculates a time delay of the UE to be prepared to receive a reference signal with the new TCI state, generates a second message indicating the time delay of the UE for the new TCI state, and transmits the second message to the network.

公开(公告)号：US12273906B2

公开(公告)日：2025-04-08

申请号：US17439024

申请日：2020-10-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Yushu Zhang ,  Huaning Niu ,  Hong He ,  Wei Zeng ,  Chunxuan Ye ,  Oghenekome Oteri ,  Sigen Ye ,  Dawei Zhang ,  Chunhai Yao ,  Jie Cui ,  Yang Tang

IPC: H04W72/542 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/23

Abstract: A cellular base station (BS) which transmits more flexible downlink control information (DCI) to the UE, and a UE capable of receiving and processing a received DCI message. The DCI message may have a DCI format of 0_1 or 0_2 and further may comprise an UL-SCH set to 0, a CSI request field of all 0s and an SRS request field having a nonzero value. The DCI message may indicate to the UE that the UE should: 1) transmit an aperiodic SRS corresponding to SRS request; and 2) that the UE should not transmit on the PUSCH. The DCI may include existing fields that specify either a slot offset or beam information useable when transmitting the aperiodic SRS. The base station may also generate a DCI message with an SRS trigger that is targeted to a plurality of UEs in a group, or a plurality of groups of UEs, for greater efficiency.

公开(公告)号：US12273898B2

公开(公告)日：2025-04-08

申请号：US17765478

申请日：2021-04-05

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Dawei Zhang ,  Wei Zeng ,  Yushu Zhang ,  Hong He ,  Chunxuan Ye ,  Huaning Niu ,  Jie Cui ,  Wei Zhang

IPC: H04W72/232 ,  H04W72/12

Abstract: Techniques described herein may include a special scheduling cell (sSCell) provided for dynamic spectrum sharing (DSS). The sSCell may schedule a primary cell of a master cell group (MCG) or a primary cell of a secondary cell group (SCG). The primary cell may be referred to as a special cell or SpCell. The sSCell may be activated and/or deactivated, enter in or exit from a state of dormancy, and radio link monitoring (RLM), beam failure recovery (BFR), and cell grouping parameters may be provided. Techniques described herein include configuring a UE-specific search space (USS) with non-fallback downlink control information (DCI), USS with fallback DCI, and overall search space for DSS enhancement.

公开(公告)号：US12261797B2

公开(公告)日：2025-03-25

申请号：US17755678

申请日：2021-05-11

Applicant: Apple Inc.

Inventor： Jie Cui ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Hong He ,  Huaning Niu ,  Manasa Raghavan ,  Qiming Li ,  Xiang Chen ,  Yang Tang

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/21

Abstract: A user equipment (UE) is configured to determine to perform a sounding reference signal (SRS) transmission with an antenna port switch operation, wherein the SRS transmission with the antenna port switch operation is performed during an SRS transmission occasion comprising one or more symbols of a slot and apply one or more scheduling restriction rules corresponding to the SRS transmission with the antenna port switch to provide one or more scheduling restrictions for the UE, wherein the scheduling restrictions cause the UE to omit performing at least one of transmission operations or reception operations during one or more symbols of the slot or one or more symbols of an adjacent slot.

公开(公告)号：US12250565B2

公开(公告)日：2025-03-11

申请号：US17440611

申请日：2020-04-08

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Jie Cui ,  Wei Zeng ,  Yang Tang ,  Yushu Zhang

IPC: H04W16/28 ,  H04L5/00 ,  H04W80/02

Abstract: Some aspects include an apparatus, method, and computer program product for facilitating control messaging for multi-beam communications in 5G wireless communication systems. Nodes of a 5G network may be generate Medium Access Control Control Elements (MAC CEs) to update User Equipment (UE) with different Component Carrier (CC) settings. The MAC CEs may update a list of CCs to reduce messaging overhead and latency. For example, a MAC CE may indicate an update for a Transmission Configuration Indication (TCI) state for a list of CCs. Similarly, a MAC CE may be used to update a spatial relation for a Sounding Reference Signal (SRS) resource set and/or a SRS resource corresponding to a list of CCs. A MAC CE may also be used to update multiple TCI codepoints having one or two TCI states in a multi-Transmission Reception Point (multi-TRP) scenario.

公开(公告)号：US20250081110A1

公开(公告)日：2025-03-06

申请号：US18724985

申请日：2022-01-10

Applicant: Apple Inc.

Inventor： Qiming Li ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Huaning Niu ,  Jie Cui ,  Manasa Raghaven ,  Xiang Chen ,  Yang Tang ,  Yuqin Chen

IPC: H04W52/02 ,  H04L5/00 ,  H04W24/08

Abstract: Techniques, described herein, include solutions for enabling a user equipment (UEs) to operate in a power saving mode (PSM) by performing radio link monitoring (RLM), beam failure detection (BFD), and radio resource management (RRM) based on one or more reference signals with a decreased periodicity. The reference signals may include system synchronizations blocks (SSBs), a channel state information (CSI) m signal (CSI-RSs), or a combination thereof. A base station may be configured to operate as a master cell group (MCG) node or a secondary cell group (SCG) node and may transmit reference signals with an increased periodicity to UEs in an active mode of operation while also transmitting reference signals with a decreased periodicity to UEs in a PSM.

公开(公告)号：US12245191B2

公开(公告)日：2025-03-04

申请号：US17442539

申请日：2020-05-14

Applicant: Apple Inc.

Inventor： Hong He ,  Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Haitong Sun ,  Jie Cui ,  Oghenekome Oteri ,  Wei Zeng ,  Weidong Yang ,  Yang Tang ,  Yuchul Kim ,  Yushu Zhang

IPC: H04W68/02 ,  H04W24/08 ,  H04W74/0816 ,  H04W76/28

Abstract: Some aspects of this disclosure include apparatuses and methods for implementing mechanisms for downlink control information between an electronic device (for example, a UE) and a network for cell detection and measurement. For example, some aspects relate to an electronic device including a transceiver and a processor communicatively coupled to the transceiver. The processor monitors one or more paging occasions within a discontinuous repetition cycle (DRX) and can make a determination of one or more paging occasions within the DRX to not monitor. Each paging occasion may include a transmission by the network of downlink control information for one or more paging messages.

公开(公告)号：US20250056542A1

公开(公告)日：2025-02-13

申请号：US18447415

申请日：2023-08-10

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Huaning Niu ,  Chunxuan Ye ,  Dawei Zhang ,  Wei Zeng ,  Xiang Chen ,  Ankit Bhamri ,  Jie Cui

IPC: H04W72/21 ,  H04L1/1812 ,  H04W74/08

Abstract: This disclosure relates to techniques for performing physical uplink control channel repetitions before dedicated physical uplink control channel resource configuration in a wireless communication system. A wireless device may receive configuration information indicating that physical uplink control channel repetition before dedicated physical uplink control channel resource configuration is supported. The wireless device may perform a physical uplink control channel transmission with repetition before dedicated physical uplink control channel resource configuration based at least in part on the configuration information.

公开(公告)号：US20250055628A1

公开(公告)日：2025-02-13

申请号：US18931780

申请日：2024-10-30

Applicant: Apple Inc.

Inventor： Chunhai Yao ,  Chunxuan Ye ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Haitong Sun ,  Hong He ,  Jie Cui ,  Oghenekome Oteri ,  Shu Guo ,  Wei Zeng ,  Weidong Yang ,  Yang Tang ,  Yuchul Kim ,  Yuqin Chen ,  Yushu Zhang

IPC: H04L5/00 ,  H04W72/0453 ,  H04W72/23

Abstract: Methods to enhance the coverage of NR systems for coverage-limited wireless devices are disclosed. A user equipment (UE) may receive, from a base station, information indicating that a coverage enhancement mode is supported. The UE may determine whether to enter the coverage enhancement mode based on a downlink signal synchronization block (DL SSB). In response to determining to enter the coverage enhancement mode, the UE may transmit a reserved preamble to the base station to initiate random access for the coverage enhancement mode.