公开(公告)号：US20240098838A1

公开(公告)日：2024-03-21

申请号：US17933915

申请日：2022-09-21

申请人： APPLE INC.

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

IPC分类号： H04W76/28

CPC分类号： H04W76/28 ,  H04L1/0061

摘要： 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：US20240098720A1

公开(公告)日：2024-03-21

申请号：US18468090

申请日：2023-09-15

申请人： Apple Inc.

发明人： Han Pu ,  Lijie Zhang ,  Alosious Pradeep Prabhakar ,  Lele Cui ,  Kai Zhang

IPC分类号： H04W72/0453 ,  H04W36/24 ,  H04W72/232

CPC分类号： H04W72/0453 ,  H04W36/249 ,  H04W72/232

摘要： A terminal may include configured to receive, from a network, multiple downlink signals. The terminal may include a processor configured to identify, from the downlink signals, at least one configuration parameter including a bandwidth part switching indicator. The processor may then identify at least one resource from a target bandwidth part indicated by the bandwidth part switching indicator. The processor may then determine a bandwidth part mismatch based on whether a signal is received using the at least one resource from the target bandwidth part.

公开(公告)号：US11917532B2

公开(公告)日：2024-02-27

申请号：US17481262

申请日：2021-09-21

申请人： Apple Inc.

发明人： 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分类号： H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

CPC分类号： H04W48/18 ,  H04B17/318 ,  H04W48/14 ,  H04W88/10

摘要： 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：US10820248B2

公开(公告)日：2020-10-27

申请号：US16605335

申请日：2017-05-04

申请人： Apple Inc.

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

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

摘要： 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：US20240106610A1

公开(公告)日：2024-03-28

申请号：US18469819

申请日：2023-09-19

申请人： Apple Inc.

发明人： Han Pu ,  Lijie Zhang ,  Lele Cui ,  Kai Zhang

IPC分类号： H04L5/00

CPC分类号： H04L5/0053

摘要： The techniques provide solutions for a user equipment (UE) and base station to switch between T1R4 and 2T4R for sounding reference signals (SRS). The UE and base station may communicate SRS using 2T4R. The UE and/or base station may detect and evaluate a signal quality trigger and/or condition relating to switching from T2R4 to T1R4. The trigger and/or condition may correspond to a channel or radio frequency (RF) quality, conflicting or problematic band combinations used in a non-standalone (NSA) scenario, whether dedicated data subscription (DDS) subscriber identity module (SIM) or non-DDS SIM is being used in a dual SIM dual active (DSDA) scenario, etc. The UE and base station may either continue using T2R4 communications or switch to T1R4 communications based on the trigger and/or evaluation.

公开(公告)号：US20240073827A1

公开(公告)日：2024-02-29

申请号：US18351016

申请日：2023-07-12

申请人： APPLE INC.

发明人： Lijie Zhang ,  Zhiwei Wang ,  Lakshmi N. Kavuri

IPC分类号： H04W52/24 ,  H04W52/42

CPC分类号： H04W52/245 ,  H04W52/42

摘要： Systems and methods for enhanced power control at a user equipment (UE) under poor channel conditions respective to antenna transmit diversity (ATD) mechanisms are discussed herein. In some embodiments, a UE may reset a transmit power control (TPC) power adjustment value when an ATD antenna switch of the ATD mechanism is performed. In some embodiments, a UE may reduce the value of an ATD hysteresis timer upon determining that a reference signal receive power (RSRP) change on a monitored reference signal that drives a pathloss calculation at the UE exceeds a threshold. In some embodiments, a UE may scale a filtering coefficient of a pathloss calculation mechanism upon determining that an RSRP change on a monitored reference signal that drives a pathloss calculation at the UE exceeds a threshold.

公开(公告)号：US20240032002A1

公开(公告)日：2024-01-25

申请号：US18349085

申请日：2023-07-07

申请人： Apple Inc.

发明人： Xiaolong Tu ,  Kai Zhang ,  Lele Cui ,  Lijie Zhang

IPC分类号： H04W72/0446 ,  H04W72/56

CPC分类号： H04W72/0446 ,  H04W72/56

摘要： Provided is a method for a user equipment (UE). The UE obtains a slot allocation information from a network device. The slot allocation information indicates a first slot and a second slot. The first slot is configured to communicate voice traffic and the second slot is configured to communicate traffic other than voice. The UE communicates the voice traffic in the first slot and the traffic other than voice in the second slot.

公开(公告)号：US20200128467A1

公开(公告)日：2020-04-23

申请号：US16605335

申请日：2017-05-04

申请人： Apple Inc.

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

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

摘要： 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：US20240313921A1

公开(公告)日：2024-09-19

申请号：US18602463

申请日：2024-03-12

申请人： Apple Inc.

发明人： Lijie Zhang ,  Zhiwei Wang ,  Lakshmi N Kavuri

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

CPC分类号： H04L5/0051 ,  H04L5/001 ,  H04W72/0453 ,  H04W72/0457 ,  H04W72/231

摘要： 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

申请人： APPLE INC.

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

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

CPC分类号： H04W52/0232 ,  H04L1/0061 ,  H04W76/28

摘要： 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.