公开(公告)号：US11463212B2

公开(公告)日：2022-10-04

申请号：US16768460

申请日：2017-12-29

Applicant: Apple Inc.

Inventor： Zhibin Yu ,  Michael Ruder ,  Holger Neuhaus ,  Yeong-Sun Hwang ,  Bertram Gunzelmann

IPC: H04L5/00 ,  H04W72/08 ,  H04B7/06 ,  H04B7/08 ,  H04L25/03

Abstract: A communication device comprises a receiver including at least two receive antennas and configured to receive at least one reference signal of a plurality of reference signals, each reference signal being transmitted from at least one base station at a predefined reference signal transmission time; a controller configured to switch between at least two receive configurations of the at least two antennas during a reception period of the at least one reference signal; and a signal quality determiner configured to determine a parameter indicative of a first signal quality of the received reference signal for each receive configuration.

公开(公告)号：US20210258886A1

公开(公告)日：2021-08-19

申请号：US17175494

申请日：2021-02-12

Applicant: Apple Inc.

Inventor： Haitong Sun ,  Yushu Zhang ,  Wei Zeng ,  Dawei Zhang ,  Ismael Gutierrez Gonzalez ,  Ghaith N. Hattab ,  Yuchul Kim ,  Hong He ,  Weidong Yang ,  Chunxuan Ye ,  Chunhai Yao ,  Oghenekome Oteri ,  Yeong-Sun Hwang

IPC: H04W52/18 ,  H04W72/04

Abstract: A method for operating user equipment (UE) includes generating, by the UE, a transmit precoding matrix indicator (TPMI) list including one or more TPMIs selected from a set of available TPMIs stored at a base station (BS). Data indicative of the TPMI list is transmitted to the BS. An index of the TPMI list is transmitted to the BS. Downlink control information (DCI) is received from the BS including an indication of at least one TPMI from the TPMI list based on the index. Uplink data is transmitted to the BS on a physical uplink shared channel (PUSCH) using the at least one TPMI.

公开(公告)号：US20200259561A1

公开(公告)日：2020-08-13

申请号：US16792147

申请日：2020-02-14

Applicant: Apple Inc.

Inventor： Sabine Roessel ,  Holger Neuhaus ,  Yeong-Sun Hwang ,  Bertram Gunzelmann ,  Andreas Menkhoff ,  Elmar Wagner ,  Jong-Kae Fwu ,  Xiangyang Zhuang

IPC: H04B7/26 ,  H04L27/26 ,  H04W72/04 ,  H04L5/14 ,  H04L5/00

Abstract: Methods and apparatus for communicating in a wireless network including apparatus comprising transceiver circuitry to send and receive data in a plurality of time periods, defined by a time division duplex (TDD) time grid, to another entity, the plurality of time periods corresponding to a plurality of orthogonal frequency division multiplexing (OFDM) symbols and the transceiver circuitry being operable to switch from receive mode to transmit mode and/or from transmit mode to receive mode according to a flexible uplink and downlink allocation of the plurality of time periods; and baseband circuitry coupled to the transceiver circuitry to control the transceiver circuitry to switch during a switching interval embedded within a time period corresponding to an OFDM symbol of the plurality of OFDM symbols.