公开(公告)号：US20240313921A1

公开(公告)日：2024-09-19

申请号：US18602463

申请日：2024-03-12

Applicant: Apple Inc.

Inventor： Lijie Zhang ,  Zhiwei Wang ,  Lakshmi N Kavuri

IPC: H04L5/00 ,  H04W72/0453 ,  H04W72/0457 ,  H04W72/231

CPC classification number: H04L5/0051 ,  H04L5/001 ,  H04W72/0453 ,  H04W72/0457 ,  H04W72/231

Abstract: A wireless network may include a device that communicates with base stations. The device may include a set of antennas. The network may transmit a message identifying a subset of frequency resources of a frequency band for the device. The subset can include a bandwidth part configuration, a component carrier configuration, and/or a physical resource block configuration. The device may generate wireless performance metric data with the set of antennas using the subset of frequency resources rather than averaging wireless performance metric data across the entire band. The device may identify a best performing antenna based on the performance metric data and may use that antenna to transmit signals. The best performing antenna may be different than when averaged across the entire frequency band, serving to optimize wireless performance particularly when the frequency band has a wide bandwidth.

公开(公告)号：US20240098639A1

公开(公告)日：2024-03-21

申请号：US17933923

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W52/02 ,  H04L1/00 ,  H04W76/28

CPC classification number: H04W52/0232 ,  H04L1/0061 ,  H04W76/28

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.

公开(公告)号：US20230088031A1

公开(公告)日：2023-03-23

申请号：US17947003

申请日：2022-09-16

Applicant: Apple Inc.

Inventor： Kai Zhang ,  Ajay Singh ,  Deepankar Bhattacharjee ,  Lele Cui ,  Lijie Zhang

IPC: H04W36/00 ,  H04W36/08

Abstract: A wireless network may include a PCELL base station, an SCELL base station, and user equipment (UE) that communicate using standalone carrier aggregation. The UE may receive PCELL signals during first measurement periods, may perform first measurements on the PCELL signals, may receive SCELL signals during second measurement periods, and may perform second measurements on the SCELL signals. When a scheduled reporting time approaches, the UE may compare a duration between a most recent of the second measurement periods and the reporting time to a threshold. If the duration is less than the threshold, the UE may include the most recent second measurement in a measurement report transmitted at the scheduled reporting time. When the duration exceeds the threshold, the receiver may perform a third measurement on the SCELL signals during an unscheduled period prior to the reporting time and may include the third measurement in the measurement report.

公开(公告)号：US20220322078A1

公开(公告)日：2022-10-06

申请号：US17438996

申请日：2020-10-15

Applicant: Apple Inc.

Inventor： Fangli Xu ,  Dawei Zhang ,  Deepankar Bhattacharjee ,  Haijing Hu ,  Lele Cui ,  Lijie Zhang ,  Qiang Miao ,  Zhiwei Wang

IPC: H04W8/30 ,  H04W76/15 ,  H04W76/19

Abstract: This disclosure relates to techniques for performing wireless communications using a split bearer. A user equipment device may perform a recovery operation for a lost uplink packet. The recovery operation may be in response to an indication from the network or may be initiated autonomously by the device.

公开(公告)号：US12250033B2

公开(公告)日：2025-03-11

申请号：US18544802

申请日：2023-12-19

Applicant: Apple Inc.

Inventor： Lijie Zhang ,  Zhiwei Wang ,  Lakshmi N. Kavuri

IPC: H04B7/0413 ,  H04B7/06 ,  H04B17/336 ,  H04W72/21 ,  H04W72/54

Abstract: Systems, methods, and apparatuses disclosed herein can compensate for imbalances between multiple transport streams of an uplink (UL)-multiple-input and multiple-output (MIMO) transmission. These systems, methods, and apparatuses can adjust one or more signal metrics of multiple recovered transport streams of the UL-MIMO transmission that are received in the presence of imbalances between the multiple transport streams of the UL-MIMO transmission. As an example, these systems, methods, and apparatuses can inject noise into one or more of the multiple recovered transport streams to adjust the one or more signal metrics of the multiple recovered transmission streams to lessen the imbalances between the multiple transmission streams.

公开(公告)号：US20240188067A1

公开(公告)日：2024-06-06

申请号：US17758609

申请日：2021-08-27

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Alex Yee Kit Ho ,  Bing Zhao ,  Kexin Ma ,  Qiang Miao ,  Tao Huang ,  Wen Zhao ,  Yanxia Wang ,  Ying Zhang ,  Zhiwei Wang

IPC: H04W72/12 ,  H04W72/044 ,  H04W88/06

CPC classification number: H04W72/1215 ,  H04W72/044 ,  H04W88/06

Abstract: Systems and methods for reducing collisions of transmission data for a first subscriber (e.g., a voice subscriber) with transmission data for a second subscriber (e.g., a data subscriber) at a dual sim dual active (DSDA) user equipment (UE) are described herein. A DSDA UE may be configured to implement a modified skipUplinkTxDynamic feature that avoids collisions by buffering transmission data of the data subscriber and sending a (later) scheduling request (SR) for a grant for that data. A DSDA UE may regulate data subscriber transmissions to avoid a transmission duration for the voice subscriber. A DSDA UE may reduce certain transmissions for a voice subscriber (subject to a block error rate (BLER) threshold for the voice subscriber) to lower the probability of collision. A DSDA UE may operate a data subscriber and a voice subscriber in the same cell to avoid collisions due to RF tuning and/or relative slot overlap.

公开(公告)号：US20240172104A1

公开(公告)日：2024-05-23

申请号：US18421584

申请日：2024-01-24

Applicant: Apple Inc.

Inventor： Junzhen Qin ,  Wen Zhao ,  Lijie Zhang ,  Lele Cui ,  Wenping Lou ,  Qiang Miao ,  Zhiwei Wang ,  Ying Zhang ,  Deepankar Bhattacharjee ,  Kexin Ma ,  Alex Yee Kit Ho

IPC: H04W48/18 ,  H04B17/318 ,  H04W48/14

CPC classification number: H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.

公开(公告)号：US11888552B1

公开(公告)日：2024-01-30

申请号：US17903867

申请日：2022-09-06

Applicant: Apple Inc.

Inventor： Lijie Zhang ,  Zhiwei Wang ,  Lakshmi N. Kavuri

IPC: H04B7/0413 ,  H04B7/06 ,  H04B17/336 ,  H04W72/21 ,  H04W72/54

CPC classification number: H04B7/0413 ,  H04B7/0632 ,  H04B17/336 ,  H04W72/21 ,  H04W72/54

Abstract: Systems, methods, and apparatuses disclosed herein can compensate for imbalances between multiple transport streams of an uplink (UL)-multiple-input and multiple-output (MIMO) transmission. These systems, methods, and apparatuses can adjust one or more signal metrics of multiple recovered transport streams of the UL-MIMO transmission that are received in the presence of imbalances between the multiple transport streams of the UL-MIMO transmission. As an example, these systems, methods, and apparatuses can inject noise into one or more of the multiple recovered transport streams to adjust the one or more signal metrics of the multiple recovered transmission streams to lessen the imbalances between the multiple transmission streams.

公开(公告)号：US20230088766A1

公开(公告)日：2023-03-23

申请号：US17481262

申请日：2021-09-21

Applicant: Apple Inc.

Inventor： Junzhen Qin ,  Wen Zhao ,  Lijie Zhang ,  Lele Cui ,  Wenping Lou ,  Qiang Miao ,  Zhiwei Wang ,  Ying Zhang ,  Deepankar Bhattacharjee ,  Kexin Ma ,  Alex Yee Kit Ho

IPC: H04W48/18 ,  H04B17/318 ,  H04W48/14

Abstract: This disclosure relates to techniques for multi-RAT and DSDA capable wireless devices to handle frame blanking in a wireless communication system. A wireless device may establish wireless links according to a first radio access technology and a second radio access technology. The wireless device may determine to perform transmit and receive blanking for one or more antennas of the wireless device for the first radio access technology to perform sounding reference signal transmissions for the second radio access technology based at least in part on a band combination for the wireless links. The wireless device may determine a modification to channel state feedback reporting for the first radio access technology based at least in part on the transmit and receive blanking. The wireless device may perform channel state feedback reporting using the determined modification.

公开(公告)号：US12238808B2

公开(公告)日：2025-02-25

申请号：US17933915

申请日：2022-09-21

Applicant: APPLE INC.

Inventor： Lijie Zhang ,  Lele Cui ,  Xiaolong Tu ,  Dongzhou Yang ,  Tao Tao ,  Lei Zhou ,  Zihuan Xu

IPC: H04W76/28 ,  H04L1/00

Abstract: Systems and methods related to “on/off” determinations regarding the performance of physical downlink control channel (PDCCH) monitoring during connected mode discontinuous reception (CDRX) on duration windows are disclosed herein. In some cases, a radio access network (RAN) predicts whether a downlink (DL) packet for a UE will arrive at a buffer of the RAN prior to an end of a CDRX on duration window of the UE, and sends a downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a power-saving radio network temporary identifier (PS-RNTI) (DCP) for the CDRX on duration window indicating whether or not the UE should perform PDCCH monitoring during the CDRX on duration window based on the prediction. In some cases, a UE determines a current state of DL traffic and adaptively uses DCP monitoring based on the current state of the traffic. Aggregation level adaptation by the RAN is also discussed.