公开(公告)号：US11018748B2

公开(公告)日：2021-05-25

申请号：US17009062

申请日：2020-09-01

Applicant: APPLE INC.

Inventor： Hua Li ,  Yang Tang ,  Jie Cui ,  Shuang Tian ,  Yuhan Zhou

IPC: H04B7/06

Abstract: Systems and methods provide for beam detection in a wireless communication system. An apparatus for a UE may be configured to identify a plurality of CSI-RS resources corresponding to different Tx beams configured for measurement by the UE, measure an L1-RSRP for the plurality of CSI-RS resources, determine a selected Tx beam of the different Tx beams based on measured L1-RSRP values for the plurality of CSI-RS resources, and determine a measurement accuracy of a first L1-RSRP value corresponding to the selected Tx beam based on successful beam detection probability.

公开(公告)号：US20210144808A1

公开(公告)日：2021-05-13

申请号：US17091664

申请日：2020-11-06

Applicant: Apple Inc.

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

IPC: H04W88/06 ,  H04W72/12 ,  H04W72/04 ,  H04W80/02 ,  H04B17/318 ,  H04L1/00

Abstract: Apparatuses, systems, and methods for performing multi-TRP transmissions using techniques for reducing wireless device power consumption. A wireless device may select a downlink signal buffering method for a communication slot. The downlink signal buffering method may be selected from a single antenna panel signal buffering method or a multi-antenna panel signal buffering method. One or more beams for which to perform downlink signal buffering for the communication slot may be selected based at least in part on the downlink signal buffering method selected. Downlink signals may be received from one or more cellular base stations during the communication slot using the selected one or more beams. The downlink signals received using the selected one or more beams may be buffered by the wireless device.

公开(公告)号：US10925101B2

公开(公告)日：2021-02-16

申请号：US16127942

申请日：2018-09-11

Applicant: Apple Inc.

Inventor： Rui Huang ,  Jie Cui ,  Yang Tang ,  Hua Li ,  Yuhan Zhou

IPC: H04W76/11 ,  H04W72/04 ,  H04W56/00 ,  H04W24/10 ,  H04L5/00 ,  H04B17/318 ,  H04B7/06

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for cell identification (ID) and beam ID detections in new radio (NR). The detections comprise NR primary synchronization signal (PSS)/secondary synchronization signal (SSS) detection, PBCH DMRS detection, SS reference signal received power (RSRP) measurement, and slot/SS burst boundary timing acquiring. Various embodiments describe how to detect a cell ID and a beam ID in millimeter wave (mmWave) operation. Other embodiments describe further details regarding how to detect NR cell and beam ID during intra-frequency measurements.

公开(公告)号：US10924958B2

公开(公告)日：2021-02-16

申请号：US16595637

申请日：2019-10-08

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Yang Tang ,  Yujian Zhang ,  Rui Huang

IPC: H04W24/10 ,  H04W36/00 ,  H04W28/08 ,  H04W72/12

Abstract: An embodiment for user equipment that receives a plurality of measurement gap repetition patterns from a network. Each measurement gap repetition pattern may be assigned to a different frequency of the network. The plurality of measurement gap repetition patterns may include skipping measurement patterns. Further embodiments may include the user equipment receiving a repetition period in a measurement object frame or receiving a plurality of measurement gap repetition patterns in which the measurement gaps are non-colliding with measurement gaps of other repetition patterns assigned to the user equipment.

公开(公告)号：US20200235872A1

公开(公告)日：2020-07-23

申请号：US16716245

申请日：2019-12-16

Applicant: Apple Inc.

Inventor： Yang Tang ,  Rui Huang

IPC: H04L5/00 ,  H04W72/02 ,  H04W56/00

Abstract: An apparatus of a base station, comprising: a controller to configure a first measurement gap pattern with a first measurement gap repetition period (MGRP) for a first receive (Rx) chain of a user equipment (UE); and configure a second measurement gap pattern with a second measurement gap repetition period (MGRP) for a second receive (Rx) chain of the UE, wherein the first MGRP is different from the second MGRP. The apparatus may configure the measurement gap pattern to support carrier aggregation and/or dual connectivity.

公开(公告)号：US20250167942A1

公开(公告)日：2025-05-22

申请号：US18834863

申请日：2022-02-11

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04W24/10

Abstract: A user equipment (UE) may receive, from a base station (BS) configured to support activation of a secondary cell (SCell), a request to provide a measurement report. In response to the request, the UE may perform one or more measurements on the SCell using one or more reference signals (RSs). Additionally or alternatively, the UE may generate the measurement report based on the one or more measurements and further transmit the measurement report to the BS. In some embodiments, the UE may further determine a pathloss estimation based on the one or more measurements.

公开(公告)号：US20250167936A1

公开(公告)日：2025-05-22

申请号：US18834971

申请日：2022-02-12

Applicant: Apple Inc.

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

IPC: H04L5/00 ,  H04W24/08 ,  H04W24/10 ,  H04W56/00

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving first signaling information from a first base station (BS), where the first signaling information indicates that a user equipment (UE) device is to determine an index of a first synchronization signal block (SSB) transmitted by a second BS to the UE device on a second component carrier, based on timing information regarding a first component carrier associated with the first BS; determining a first measurement window for measuring one or more characteristics of the first SSB, where the first measurement window is determined based on a first time offset value Δt1 and an expected length of the first SSB and measuring the one or more characteristics of the first SSB on the second carrier during the first measurement window.

公开(公告)号：US12294964B2

公开(公告)日：2025-05-06

申请号：US17813792

申请日：2022-07-20

Applicant: Apple Inc.

Inventor： Ankit Bhamri ,  Dawei Zhang ,  Sigen Ye ,  Wei Zeng ,  Yang Tang

IPC: H04W56/00

Abstract: This application relates to wireless communications, including methods and apparatus to manage uplink (UL) transmit switching with multiple timing advance groups (TAGs) for wireless devices. A wireless device is configured to select N≥2 radio frequency carriers for UL transmission from M>N available radio frequency carriers and subsequently send UL transmissions to a cellular wireless network based on the configuration. The M available radio frequency carriers are divided into distinct TAGs, each TAG having a distinct timing advance value, and the N radio frequency carriers belong to a single TAG. The wireless device is further configured to switch to a second set of N UL radio frequency carriers, after an uplink switching gap time period, based on a TAG medium access control (MAC) control element (CE), received the cellular wireless network, which specifies a second TAG from which to select the second set of N UL radio frequency carriers.

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：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.