公开(公告)号：US11765668B2

公开(公告)日：2023-09-19

申请号：US16579544

申请日：2019-09-23

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Johnson O. Sebeni ,  Zhu Ji ,  Dawei Zhang ,  Wei Zhang ,  Yuchul Kim ,  Tianyan Pu ,  Pengkai Zhao ,  Wei Zeng ,  Jia Tang ,  Ping Wang ,  Wanping Zhang ,  Yang Li

IPC: H04B17/318 ,  H04B7/0404 ,  H04W52/02 ,  H04W52/00 ,  H04W52/04 ,  H04B7/06 ,  H04W52/36 ,  H04W52/14 ,  H04W52/52 ,  H04W72/044 ,  H04W72/21

CPC classification number: H04W52/367 ,  H04W52/146 ,  H04W52/52 ,  H04W72/0473 ,  H04W72/21

Abstract: Apparatuses, systems, and methods for providing maximum transmit power control when utilizing multiple radio access technologies. For example, a wireless communication device comprising two cellular radios may intend to transmit on the first radio, while concurrently transmitting on the second radio. To ensure compliance with a maximum transmit power limitation, the device may determine an allowed transmit power level of the first radio, representing a difference between the maximum transmit power limitation and the current transmit power level being transmitted by the second radio. The device may also determine a threshold power level for a communication by the first radio. If the allowed transmit power level meets the threshold power level, then the device may transmit the first communication having a power level between the threshold power level and the allowed transmit power level. Otherwise, the device may forego transmission of the first communication.

公开(公告)号：US11690134B2

公开(公告)日：2023-06-27

申请号：US17885316

申请日：2022-08-10

Applicant: Apple Inc.

Inventor： Yang Li ,  Li Su ,  Zhu Ji ,  Tianyan Pu

IPC: H04L12/00 ,  H04W88/04 ,  H04W4/70 ,  H04W76/11 ,  H04W8/00 ,  H04W56/00 ,  H04W72/02 ,  H04W72/0446 ,  H04W72/0453 ,  H04W88/02

CPC classification number: H04W88/04 ,  H04W4/70 ,  H04W8/005 ,  H04W56/001 ,  H04W72/02 ,  H04W72/0446 ,  H04W72/0453 ,  H04W76/11 ,  H04W88/023

Abstract: This disclosure relates to techniques for supporting message mapping via time and/or frequency indexing. For example, these techniques may be applied to device-to-device wireless communication. For example, device to device discovery may use message mapping via frequency indexing. A portion of the payload of a message, such as a discovery message, may be offloaded to a frequency and/or time index. A receiving device may determine the offloaded portion of the payload based on the frequency and/or time (e.g., subcarrier and/or slot) used to transmit the message.

公开(公告)号：US11616680B2

公开(公告)日：2023-03-28

申请号：US15931873

申请日：2020-05-14

Applicant: Apple Inc.

Inventor： Yang Li ,  Tianyan Pu ,  Li Su ,  Zhu Ji

IPC: H04L27/26 ,  H04W56/00

Abstract: This disclosure relates to techniques for supporting narrowband device-to-device wireless communication, including possible techniques for providing synchronization sequences. A first wireless device may transmit a preamble of a device-to-device wireless communication with a second wireless device. The preamble may include a first synchronization sequence. The first synchronization sequence may include multiple repetitions of a basis sequence, multiplied by a cover code. The basis sequence may span multiple orthogonal frequency division multiplexing symbols.

公开(公告)号：US20220368403A1

公开(公告)日：2022-11-17

申请号：US17873934

申请日：2022-07-26

Applicant: Apple Inc.

Inventor： Jia Tang ,  Beibei Wang ,  Dawei Zhang ,  Haitong Sun ,  Johnson O. Sebeni ,  Pengkai Zhao ,  Ping Wang ,  Wei Zeng ,  Yang Li ,  Zhu Ji

IPC: H04B7/08 ,  H04B7/06 ,  H04W36/06 ,  H04W36/36

Abstract: Apparatuses, systems, and methods for a wireless device to perform methods to implement mechanisms for a UE to request a beam quality measurement procedure. A user equipment device may be configured to perform a method including performing transmitting a request to perform a beam quality measurement procedure for downlink receptions (e.g., a P3 procedure) to a base station/network entity, receiving instructions to perform the beam quality measurement procedure from the base station, and transmitting results of the beam quality measurement procedure to the base station. In some embodiments, transmission of the request may be response to at least one trigger condition and/or detection of a condition at the UE. The request may include an indication of a preferred timing offset. The instructions to perform the beam quality measurement procedure may include a schedule for the beam quality measurement.

公开(公告)号：US11457458B2

公开(公告)日：2022-09-27

申请号：US16739916

申请日：2020-01-10

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Jia Tang ,  Yang Li ,  Wei Zeng ,  Haitong Sun ,  Yu Zhang ,  Zhu Ji ,  Dawei Zhang

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04W76/28 ,  H04W76/27

Abstract: This disclosure relates to techniques for a wireless device to dynamically adapt its bandwidth use using network scheduling information in a cellular communication system. A radio resource control connection between a cellular base station and a wireless device may be established. The wireless device may receive network scheduling information from the cellular base station. The wireless device may dynamically select a receive bandwidth for receiving transmissions from the cellular base station based at least in part on the network scheduling information.

公开(公告)号：US11405943B2

公开(公告)日：2022-08-02

申请号：US16575272

申请日：2019-09-18

Applicant: Apple Inc.

Inventor： Jia Tang ,  Wei Zhang ,  Wei Zeng ,  Haitong Sun ,  Yuchul Kim ,  Ping Wang ,  Sreevalsan Vallath ,  Zhu Ji ,  Dawei Zhang

IPC: H04W72/12 ,  H04W76/27 ,  H04W52/02 ,  H04W72/04 ,  H04W80/02 ,  H04W88/02

Abstract: A user equipment device may determine whether to power down one or more components based at least on a scheduling parameter that includes an indication of cross-slot scheduling. The device may power down the one or more components prior to decoding control information during a slot for which the scheduling parameter indicates that cross-slot scheduling is in place.

公开(公告)号：US11350265B2

公开(公告)日：2022-05-31

申请号：US16903529

申请日：2020-06-17

Applicant: Apple Inc.

Inventor： Tianyan Pu ,  Li Su ,  Zhu Ji ,  Yang Li

IPC: H04W8/00 ,  H04W24/08 ,  H04L27/26 ,  H04W4/70

Abstract: This disclosure relates to techniques for performing presence discovery in a wireless communication. A wireless device may monitor a wireless medium for discovery signals. A candidate discovery signal may be detected. A frequency offset estimation consistency check may be performed on the candidate discovery signal. A peak to sidelobe ratio check may be performed on the candidate discovery signal. The wireless device may determine whether the candidate discovery signal is a false positive based at least in part on the frequency offset estimation consistency check and the peak to sidelobe ratio check.

公开(公告)号：US11259313B2

公开(公告)日：2022-02-22

申请号：US16855851

申请日：2020-04-22

Applicant: Apple Inc.

Inventor： Yang Li ,  Wei Zeng ,  Zhu Ji ,  Beibei Wang ,  Jia Tang ,  Yuchul Kim ,  Haijing Hu ,  Dawei Zhang ,  Xiangying Yang ,  Sami M. Almalfouh ,  Johnson O. Sebeni ,  Wei Zhang ,  Tianyan Pu

IPC: H04W72/12 ,  H04W76/16 ,  H04J1/00 ,  H04W84/04 ,  H04W88/06

Abstract: Apparatuses, systems, and methods for a wireless device to perform simultaneous uplink activity for multiple RATs in the same carrier using frequency division multiplexing. The wireless device may establish a first wireless link with a first base station according to a first radio access technology (RAT) and a second wireless link with a second base station according to a second RAT. The first base station may provide a first cell operating in a first system bandwidth and the second base station may provide a second cell operating in a second system bandwidth. The wireless device may determine whether the wireless device has uplink activity scheduled according to both the first RAT and the second RAT. If so, the wireless device may perform uplink activity for both the first RAT and the second RAT in the first system bandwidth using frequency division multiplexing.

公开(公告)号：US11258570B2

公开(公告)日：2022-02-22

申请号：US16590742

申请日：2019-10-02

Applicant: Apple Inc.

Inventor： Yang Li ,  Yuchul Kim ,  Zhu Ji ,  Beibei Wang ,  Jia Tang ,  Wei Zeng ,  Dawei Zhang ,  Johnson O. Sebeni

IPC: H04W72/04 ,  H04L5/00 ,  H04W76/28 ,  H04L1/18 ,  H04W24/08 ,  H04W56/00

Abstract: Apparatuses, systems, and methods for a user equipment device (UE) to perform a method using a status change of a timer associated with a connected mode discontinuous reception (CDRX) communication session with a base station to trigger a switch from using a first bandwidth part (BWP) to a second BWP as the active BWP for the CDRX communication session. The timer may be an on-duration timer, an inactivity timer, or a retransmission timer. The UE may also alter a monitoring schedule of a physical downlink control channel (PDCCH) in response to detecting the status change of the timer. The second BWP may have a wider or narrower bandwidth than the first BWP, depending on the type of timer and the type of status change.

公开(公告)号：US11102738B2

公开(公告)日：2021-08-24

申请号：US16373504

申请日：2019-04-02

Applicant: Apple Inc.

Inventor： Wei Zhang ,  Wei Zeng ,  Tianyan Pu ,  Haitong Sun ,  Jia Tang ,  Dawei Zhang ,  Sami M. Almalfouh ,  Zhu Ji ,  Johnson O. Sebeni

IPC: H04J3/06 ,  H04W56/00 ,  H04W16/14 ,  H04W72/12

Abstract: Apparatuses, systems, and methods for performing timing synchronization between a base station and a user equipment device within an unlicensed spectrum band. In some scenarios, beamforming tracking may also be performed. Upon determining that a transmission medium within the unlicensed spectrum band is available for transmission, a base station may transmit a plurality of synchronization signal blocks (SSBs), or a plurality of copies of one SSB, with associated remaining minimum system information (RMSI) blocks, within a single time instance within a SSB burst window. The SSBs may be transmitted at different frequency positions and according to distinct beamforming configurations. The SSBs and RMSI blocks may be configured such that a receiving user equipment device may determine the time-domain, and optionally the frequency-domain, position of the SSB and RMSI within the SSB burst window, to allow timing synchronization and optionally beamforming tracking.