公开(公告)号：US10820248B2

公开(公告)日：2020-10-27

申请号：US16605335

申请日：2017-05-04

Applicant: Apple Inc.

Inventor： Jishan Gao ,  Yong Zhong ,  Shangfeng Li ,  Lijie Zhang ,  Qiang Miao ,  Ying Zhang ,  Yaoqi Yan ,  Zhiwei Wang ,  Tao Xie ,  Junzhen Qin

IPC: H04W36/00 ,  H04W36/32 ,  H04W76/19 ,  H04W76/28 ,  H04W36/30 ,  H04W4/02 ,  H04W24/08 ,  H04W64/00

Abstract: This disclosure relates to techniques for performing radio link monitoring and cell searching when moving at high speeds. A movement speed of a wireless device may be determined. When performing a cell search, the manner of the cell search may depend on the movement speed of the wireless device, potentially including cells that are associated with high movement speed being more highly prioritized when the wireless device is determined to be at a higher movement speed than when the wireless device is determined to be at a lower movement speed.

公开(公告)号：US20160014642A1

公开(公告)日：2016-01-14

申请号：US14790041

申请日：2015-07-02

Applicant: Apple Inc.

Inventor： Huarui Liang ,  Zhiwei Wang ,  David Boettger ,  Dawei Zhang ,  Farouk Belghoul ,  Krisztian Kiss

IPC: H04W36/00

CPC classification number: H04W36/0022 ,  H04W36/14

Abstract: Performing a circuit-switched fallback (CSFB) call with improved reliability. A request to establish a CSFB call may be received by a UE that is currently in a pool overlap area. The network resource controller, or the base station, transmits information to the UE which indicates the pools in which neighboring cells are operating. The UE uses this information to select a circuit-switched cell on which to operate for the CSFB operation, wherein the selected CS cell is in the same pool area as the current pool area. This prevents the UE from inadvertently camping on a CS cell in a different pool area, which could cause call failure on some networks. The information provided by the base station may comprise a pool area id, or may comprise mapping relation information that is useable by the UE to determine the current pool area.

Abstract translation: 执行电路交换后备（CSFB）呼叫，提高可靠性。 建立CSFB呼叫的请求可以由当前在池重叠区域中的UE接收。 网络资源控制器或基站向UE发送指示相邻小区正在操作的池的信息。 UE使用该信息来选择用于CSFB操作的电路交换小区，其中所选择的CS小区与当前池区域在同一池区域中。 这样可以防止UE在不同池区域的CS小区上无意中驻留，这可能导致某些网络的呼叫失败。 由基站提供的信息可以包括池区域id，或者可以包括由UE可用来确定当前池区域的映射关系信息。

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：US20240197942A1

公开(公告)日：2024-06-20

申请号：US18596748

申请日：2024-03-06

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Fangli Xu ,  Haijing Hu ,  Yuqin Chen ,  Dawei Zhang ,  Longda Xing ,  Zhiwei Wang ,  Yaoqi Yan ,  Muthukumaran Dhanapal ,  Beibei Wang ,  Lele Cui

IPC: A61L2/24 ,  A61L2/10 ,  A61L2/22

CPC classification number: A61L2/24 ,  A61L2/10 ,  A61L2/22 ,  A61L2202/11 ,  A61L2202/14 ,  A61L2202/15 ,  A61L2202/16

Abstract: Devices and associated methods for operating a dual-subscriber identity module (SIM) dual-standby (DSDS) user equipment device (UE) configured with a first SIM and a second SIM. The UE performs communications with a first cellular network using the first SIM and a first radio resource control (RRC) connection, and receives a request to perform a higher priority communication using the second SIM. In response to the request to perform the higher priority communication, the UE transmits a request to the first network to suspend the first RRC connection. After transmission of the request to suspend the first RRC connection, the UE receives a message from the first network to place the first RRC connection in an inactive state, and initiates a timer, wherein the timer is used to determine whether the first RRC connection remains in the inactive state or transitions to an idle state.

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：US20230180182A1

公开(公告)日：2023-06-08

申请号：US18155012

申请日：2023-01-16

Applicant: Apple Inc.

Inventor： Sethuraman Gurumoorthy ,  Dawei Zhang ,  Fangli Xu ,  Haijing Hu ,  Longda Xing ,  Murtaza Shikari ,  Muthukumaran Dhanapal ,  Sree Ram Kodali ,  Srinivasan Nimmala ,  Srirang A. Lovlekar ,  Vijay Venkataraman ,  Yaoqi Yan ,  Yuqin Chen ,  Zhiwei Wang

IPC: H04W68/02 ,  H04W72/566 ,  H04W72/12

CPC classification number: H04W68/02 ,  H04W72/566 ,  H04W72/1215 ,  H04W88/06

Abstract: This disclosure relates to systems, apparatuses, and methods for coordinating communication and avoiding and/or mitigating collisions for multi-subscriber identity module devices in a wireless communication system. A wireless device may coordinate communication associated with different subscriber identity modules and/or may mitigate collisions between communications associated with different subscriber identity modules. A network may provide information to improve coordination and/or mitigate collisions. A network may adjust paging schedules and/or provision of alert messages to improve coordination.

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：US20220240079A1

公开(公告)日：2022-07-28

申请号：US17721166

申请日：2022-04-14

Applicant: Apple Inc.

Inventor： Srirang A. Lovlekar ,  Sethuraman Gurumoorthy ,  Murtaza A. Shikari ,  Srinivasan Nimmala ,  Sree Ram Kodali ,  Fangli Xu ,  Haijing Hu ,  Yuqin Chen ,  Dawei Zhang ,  Longda Xing ,  Zhiwei Wang ,  Yaoqi Yan ,  Muthukumaran Dhanapal ,  Huarui Liang

IPC: H04W8/18 ,  H04W48/18 ,  H04W88/06 ,  H04W12/72

Abstract: A user equipment (UE) includes first and second subscriber identity modules (SIMs), possibly subscribed to different carriers. When the first SIM is in a connected state and the second SIM is in an idle state, the UE may need to periodically tune away a radio from a first frequency used for communication under the first SIM to a second frequency used for idle mode activity under the second SIM. The UE may provide to the network of the first SIM the second SIMs traffic activity pattern and/or serving frequency so that the network may provide coordinated configuration and/or scheduling for the UE device, e.g., in order to make the action of tuning away (and tuning back) the radio more efficient and/or to decrease the network impact of such radio tune aways (e.g., to decrease wasted uplink scheduling and wasted downlink transmissions for the first SIM).