公开(公告)号：US10687269B2

公开(公告)日：2020-06-16

申请号：US15765540

申请日：2015-10-09

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Hyejung Jung ,  Qian Li ,  Yuan Zhu

IPC: H04W4/00 ,  H04W48/12 ,  H04W76/14 ,  H04W74/08 ,  H04L5/00 ,  H04B7/06 ,  H04W88/08

Abstract: An architecture for wireless network access is described. In one example, a network entity comprises processing circuitry to define a downlink control channel comprising a synchronization signal, a physical broadcast channel (PBCH), and at least one slot for contention resolution or device-to-device (D2D) discovery and link setup, and broadcast a synchronization signal comprising the control channel from a plurality of remote radio heads (RRH). Other examples are also disclosed and claimed.

公开(公告)号：US20200177250A1

公开(公告)日：2020-06-04

申请号：US16780477

申请日：2020-02-03

Applicant: Apple Inc.

Inventor： Wenting Chang ,  Yuan Zhu ,  Yushu Zhang ,  Gang Xiong ,  Huaning Niu

IPC: H04B7/06 ,  H04B7/08

Abstract: Devices for and methods of synchronous beam refinement using a beam refinement reference signal (BRRS) are generally described. In one example embodiment, a UE receives BRRS information indicating switching of a Tx beam. The UE then uses this information to switch an associated Rx beam. In some embodiments, timing information is used to match the switching times. In some embodiments. DCI and CSI-RS operations are used to determine switching for the synchronous beam refinement.

公开(公告)号：US12289610B2

公开(公告)日：2025-04-29

申请号：US17437787

申请日：2021-04-01

Applicant: Apple Inc.

Inventor： Huaning Niu ,  Jie Cui ,  Dawei Zhang ,  Yang Tang ,  Manasa Raghavan ,  Qiming Li ,  Xiang Chen ,  Haitong Sun ,  Yushu Zhang

IPC: H04W16/18 ,  H04W4/44 ,  H04W36/32 ,  H04W36/08

Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

公开(公告)号：US12289606B2

公开(公告)日：2025-04-29

申请号：US17437909

申请日：2020-10-15

Applicant: Apple Inc.

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

IPC: H04W16/14 ,  H04W74/0808 ,  H04W76/10

Abstract: This disclosure relates to techniques for a wireless device to initiate channel occupancy in unlicensed spectrum in a wireless communication system. The wireless device may establish a wireless link with a cellular base station. The wireless device may determine to perform an uplink transmission to the cellular base station on an unlicensed frequency channel. The wireless device may determine whether the cellular base station has channel occupancy of the unlicensed frequency channel. The wireless device may determine whether to initiate channel occupancy of the unlicensed frequency channel. The decision whether to initiate channel occupancy may be based at least in part on whether the cellular base station has channel occupancy of the unlicensed frequency channel.

公开(公告)号：US12289267B2

公开(公告)日：2025-04-29

申请号：US17437774

申请日：2021-03-31

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04L1/00 ,  H04W76/10 ,  H04W76/20

Abstract: This disclosure relates to techniques for periodic reference signal activation and deactivation in a wireless communication system. Information configuring periodic reference signals may be received by a wireless device. Information deactivating some or all of the periodic reference signals may be received by the wireless device. The information deactivating some or all of the periodic reference signals may be received using different signaling type than the information configuring the periodic reference signals.

公开(公告)号：US12284680B2

公开(公告)日：2025-04-22

申请号：US17456304

申请日：2021-11-23

Applicant: Apple Inc.

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

IPC: H04W74/0833 ,  H04W72/0446 ,  H04L27/26

Abstract: Aspects herein relate to wireless devices, circuits, and methods for determining a PRACH resource mapping comprising a starting symbol position within a reference slot, wherein the starting symbol position is determined based, at least in part, on a subcarrier spacing configuration of PRACH resources of a wireless network that a wireless device is operating on; and using the radio to transmit a RACH preamble and an associated RA-RNTI via the determined PRACH resource mapping. Further aspects herein relate to devices, circuits, and methods for using a modified RA-RNTI for transmission or reception of data over a wireless network, wherein the wireless network has a subcarrier spacing configuration of PRACH resources, wherein a size of the subcarrier spacing configuration of the PRACH resources causes out-of-range RA-RNTI values to be calculated using a legacy RA-RNTI equation in an unmodified form, wherein the range of permissible RA-RNTI values is from 0 to 216−1.

公开(公告)号：US12273827B2

公开(公告)日：2025-04-08

申请号：US17904808

申请日：2021-09-24

Applicant: APPLE INC.

Inventor： Xiang Chen ,  Anatoliy S Ioffe ,  Dawei Zhang ,  Fucheng Wang ,  Huaning Niu ,  Jie Cui ,  Manasa Raghavan ,  Qiming Li ,  Yang Tang

IPC: H04B7/00 ,  H04W52/24 ,  H04W52/36

Abstract: The present disclosure relates to devices, apparatuses, and methods for enhanced PHR reporting in support of UE antenna scaling. A wireless device, which comprises at least one antenna array each comprising a plurality of antenna elements may perform antenna scaling by activating or deactivating at least one of the plurality of antenna elements (with corresponding RF chains) of one or more antenna arrays. The wireless device may generate a power headroom (PHR) report based at least on a difference between beamforming gains obtained after the antenna scaling and before the antenna scaling. The wireless device may then send the PHR report to a base station in communication with the wireless device.

公开(公告)号：US12273176B2

公开(公告)日：2025-04-08

申请号：US17906225

申请日：2021-09-24

Applicant: Apple Inc.

Inventor： Manasa Raghavan ,  Jie Cui ,  Qiming Li ,  Yushu Zhang ,  Yang Tang ,  Haitong Sun ,  Huaning Niu ,  Xiang Chen ,  Dawei Zhang

IPC: H04B7/06

Abstract: A user equipment (UE) is configured to establish a connection to a base station, wherein the base station configures the UE with a first beam corresponding to a first transmission reception point (TRP) and a second beam corresponding to a second TRP, wherein the first and second beam are in frequency range 2 (FR2) and wherein the UE does not support simultaneous reception of multiple beams in FR2, detect a beam failure during a beam failure detection (BFD) evaluation period, identify one or more candidate beams during a candidate beam detection (CBD) evaluation period and transmit a beam failure recovery (BFR) request to the base station.

公开(公告)号：US12267270B2

公开(公告)日：2025-04-01

申请号：US17905279

申请日：2021-09-24

Applicant: APPLE INC.

Inventor： Yushu Zhang ,  Chunhai Yao ,  Dawei Zhang ,  Haitong Sun ,  Huaning Niu ,  Oghenekome Oteri ,  Sigen Ye ,  Wei Zeng ,  Weidong Yang

IPC: H04W8/22 ,  H04L5/00 ,  H04W16/28 ,  H04W76/15

Abstract: Apparatuses, systems, and methods for SRS collision handling. A wireless device may determine whether simultaneous transmission of at least two sounding reference signals (SRSs) is allowed; if it is determined that the simultaneous transmission of the at least two SRSs is allowed, transmit the at least two SRSs simultaneously; and if it is determined that the simultaneous transmission of the at least two SRSs is not allowed, transmit one SRS of the at least two SRSs, and drop the other SRS of the at least two SRSs.

公开(公告)号：US12262414B2

公开(公告)日：2025-03-25

申请号：US17441267

申请日：2020-10-16

Applicant: Apple Inc.

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

IPC: H04W74/08 ,  H04L5/00 ,  H04W74/04 ,  H04W74/0816 ,  H04W76/19

Abstract: Beam determination refers to a set of procedures for an access node (AN) and a user equipment (UE) to select from among downlink communication beams and/or uplink communication beams for downlink and/or uplink communications, respectively. Often times, the downlink communication beams can include one or more downlink control channels, for example, a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH), to provide downlink reference signals, such as channel-state information reference signals (CSI-RSs), to the UE. The AN can execute various exemplary downlink beam scheduling procedures to control the transmission of the downlink reference signals, such as the CSI-RSs to provide an example, over the downlink communication beams. In some embodiments, the UE can utilize the CSI-RSs to perform beamforming failure detection (BFD) and beamforming failure recovery (BFR) in the wireless networks.