公开(公告)号：US10979109B2

公开(公告)日：2021-04-13

申请号：US16735750

申请日：2020-01-07

Applicant: Apple Inc.

Inventor： Yu Zhang ,  Dawei Zhang ,  Haitong Sun ,  Wei Zeng ,  Yuchul Kim

IPC: H04B7/0456 ,  H04B7/06

Abstract: A base station may transmit to a device an indication of codebook subset restriction (CBSR), which includes at least a restriction on a frequency basis. The device may receive the indication of CBSR, and may transmit to the base station channel state information (CSI) according to the received indication of CBSR. The indication of CBSR may also include a restriction on a spatial basis and restrict the device from reporting the CSI based on a subset of the frequency basis in addition to the spatial basis per configuration of the base station. The indication of CBSR may include a separately configured maximum allowed amplitude of a weighting coefficient for the spatial basis and the frequency basis, where the weighting coefficient is associated with a column vector of a precoding matrix used by the base station and the device. The number of frequency bases and the frequency compression units may be determined based on a number of different criteria, for example the number of antennas, the number of subbands, etc.

公开(公告)号：US20210099271A1

公开(公告)日：2021-04-01

申请号：US17023342

申请日：2020-09-16

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yakun Sun ,  Fangli Xu ,  Yuqin Chen ,  Dawei Zhang ,  Haijing Hu ,  Chunhai Yao ,  Yuchul Kim ,  Hong He ,  Wei Zeng ,  Haitong Sun

IPC: H04L5/00 ,  H04W24/10 ,  H04B7/06

Abstract: A wireless user equipment (UE) may employ any of various mechanisms for reporting signal quality measurements to a wireless network. The UE may impose a time delay between measurement and reporting, based on a delay parameter K. The UE may average measurements obtained at different measurement instances. The UE may employ any of various schemes for prioritizing transmission of one type of report over another, when temporal collisions occur between different types of report. The UE may employ a differential report that includes a state for indicating that a beam is not workable. The UE may employ a beam index that includes a state for indicating an invalid beam. A base station may receive a signal quality report and determine workability of a beam, e.g., by triggering a report of channel state information.

公开(公告)号：US10911187B2

公开(公告)日：2021-02-02

申请号：US15920667

申请日：2018-03-14

Applicant: Apple Inc.

Inventor： Wei Zeng ,  Yuchul Kim ,  Dawei Zhang ,  Christian W. Mucke

IPC: H04L1/18 ,  H04W72/04 ,  H04L5/00 ,  H04W8/24 ,  H04W88/02

Abstract: This disclosure relates to indicating capabilities of a user equipment to a base station while performing cellular communication. A user equipment (UE) may transmit capability information to a base station. The capability information may comprise a maximum transport block size (TBS) per transmission time interval (TTI) and an associated processing delay of the UE for a reference subcarrier spacing. Alternatively, the capability information may comprise a maximum throughput and associated processing delay of the UE. The base station may determine at least one of a maximum TBS per TTI or a number of parallel hybrid automatic repeat request (HARQ) processes to utilize in subsequent communications with the UE based on the capability information and a subcarrier spacing to be used for the subsequent communications.

公开(公告)号：US10903969B2

公开(公告)日：2021-01-26

申请号：US15918854

申请日：2018-03-12

Applicant: Apple Inc.

Inventor： Wei Zeng ,  Yuchul Kim ,  Dawei Zhang

IPC: H04L5/00 ,  H04L1/16 ,  H04W72/12 ,  H04W72/04

Abstract: This disclosure relates to performing cellular communication using modular control channel formats for uplink control information. A wireless device may determine a slot structure for uplink communication. The slot structure may be selected from multiple possible slot structures. Uplink control information may be transmitted via one or more uplink control channel modules during a slot. A number of uplink control channel modules on which uplink control information is transmitted during the slot may be selected based at least in part on the slot structure for uplink control communication.

公开(公告)号：US10863389B2

公开(公告)日：2020-12-08

申请号：US16287305

申请日：2019-02-27

Applicant: Apple Inc.

Inventor： Yi Su ,  Yuchul Kim ,  Pengkai Zhao ,  Wei Zhang ,  Sami M. Almalfouh ,  Wei Zeng ,  Haitong Sun ,  Dawei Zhang ,  Yu Zhang ,  Tianyan Pu ,  Zhu Ji ,  Johnson O. Sebeni ,  Yang Li

IPC: H04W28/26 ,  H04W28/20 ,  H04W52/28 ,  H04W28/24 ,  H04W76/28 ,  H04W8/24

Abstract: This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.

公开(公告)号：US20200374834A1

公开(公告)日：2020-11-26

申请号：US16880572

申请日：2020-05-21

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Dawel Zhang ,  Li Su ,  Tarik Tabet ,  Wei Zeng ,  Yuchul Kim

IPC: H04W68/02 ,  H04L5/00 ,  H04B17/318 ,  H04B1/3827 ,  H04W24/02

Abstract: Systems, apparatuses, and methods for coverage improvements in wireless communication devices. A wireless communication device may be configured to selectively receive one of a plurality of paging signals, or a portion thereof, based on measured or expected coverage quality of communications from a base station. In some scenarios, the wireless communication device may provide an indication to the base station of which paging signal the wireless communication device will attempt to receive, such that the base station may include paging information directed to that UE only in the indicated paging signal. In some scenarios, the base station may include paging information directed to that UE in a plurality of paging signals, each of the paging signals including a different number of repetitions of the paging information. In some scenarios, the UE may receive only a portion of a paging signal including a plurality of repetitions of the paging information.

公开(公告)号：US20200274687A1

公开(公告)日：2020-08-27

申请号：US16872034

申请日：2020-05-11

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Wei Zeng ,  Xiangying Yang ,  Dawei Zhang

IPC: H04L5/14 ,  H04L5/00 ,  H04W72/04

Abstract: TDD configuration may be dynamically and/or semi-statically signaled to user equipment devices by a base station. Semi-static TDD configuration may include: an initial portion for downlink transmission; a flexible portion; and a terminal portion for uplink transmission. TDD structure of the flexible portion may be determined later by transmission of dynamic physical layer configuration information such as downlink control information (DCI) and/or slot format indicator (SFI). (The SFI may be included in a group common PDCCH of a slot.) The downlink portion and/or the uplink portion may include subsets whose nominal transmit direction is subject to override by transmission of dynamic physical layer configuration information.

公开(公告)号：US10736163B2

公开(公告)日：2020-08-04

申请号：US16654239

申请日：2019-10-16

Applicant: Apple Inc.

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

IPC: H04W76/15 ,  H04W88/10 ,  H04W72/12 ,  H04B7/26 ,  H04W72/04 ,  H04W88/06 ,  H04W76/28

Abstract: Apparatuses, systems, and methods for a wireless device to perform substantially concurrent communications with a next generation network node and a legacy network node. The wireless device may be configured to establish a first wireless link with a first cell according to a RAT, where the first cell operates in a first system bandwidth and establish a second wireless link with a second cell according to a RAT, where the second cell operates in a second system bandwidth. Further, the wireless device may be configured to perform uplink activity for both the first RAT and the second RAT by TDM uplink data for the first RAT and uplink data for the second RAT if uplink activity is scheduled according to both the first RAT and the second RAT.

公开(公告)号：US10728734B2

公开(公告)日：2020-07-28

申请号：US16125799

申请日：2018-09-10

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Xiaowen Wang ,  Tarik Tabet ,  Dawei Zhang ,  Syed Aon Mujtaba

IPC: H04W8/00 ,  H04W52/24 ,  H04W52/02 ,  H04W76/14

Abstract: In some embodiments, a user equipment device (UE) implements a method for discovering the presence of neighboring UEs using an on-demand discovery signal transmission technique. This discovery process may be performed to enable the UEs to perform peer-to-peer communications with each other, wherein peer-to-peer communications is defined as direct communication between the UEs without involving a base station. The UE may be configured to transmit a discovery request signal when it has moved greater than a threshold amount since transmission of a prior discovery request signal. The discovery request signal causes one or more neighboring UEs to each transmit a discovery signal in response, and also causes the UE which generated the discovery request signal to transmit its own discovery signal. The received discovery signal from each of the neighboring UEs is useable to discover, or detect the presence of, these neighboring UEs.

公开(公告)号：US20200186317A1

公开(公告)日：2020-06-11

申请号：US16789797

申请日：2020-02-13

Applicant: Apple Inc.

Inventor： Yuchul Kim ,  Wei Zeng ,  Xiangying Yang ,  Haijing Hu ,  Dawei Zhang

IPC: H04L5/00 ,  H04L1/00 ,  H04L1/18 ,  H04W52/02

Abstract: Techniques are disclosed relating to preemption indicators in the context of multiplexing different services on wireless physical layer frames. In some embodiments, a preemption indication is transmitted to indicate resources used by a preempting transmission. The preemption indication may be used when preemption is enabled, e.g., as indicated by an RRC message. The preemption indication may be common to multiple UEs. The resources used by the preempting transmission may overlap with other transmissions. In various embodiments, the disclosed techniques may facilitate signal preemption, e.g., by a low-latency, high-reliability data service.