公开(公告)号：US10959212B2

公开(公告)日：2021-03-23

申请号：US15747270

申请日：2015-12-23

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Hong He ,  Jong-Kae Fwu ,  Ralf Bendlin ,  Seunghee Han

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04W76/28

Abstract: Methods and apparatuses for communicating in a cellular communications network, including provision of a user equipment comprising processing circuitry to: receive from a first cell a control signal comprising a physical Time Division Duplex Uplink-Downlink configuration indicator channel (PTCICH); decode from the PTCICH a Time Division Duplex Uplink-Downlink (TDD UL-DL) configuration; and communicate with the first cell having applied the TDD UL-DL configuration in respect of subframes associated with the first cell, wherein: the PTCICH spans less than or equal to 32 Resource Elements. Also user equipment comprising processing circuitry to: receive a control signal from a first cell; decode the control signal received from the first cell thereby to determine a second cell TDD UL-DL configuration; and communicate with the second cell having applied the second cell TDD UL-DL configuration in respect of subframes associated with the second cell.

公开(公告)号：US20200336270A1

公开(公告)日：2020-10-22

申请号：US16085124

申请日：2017-04-13

Applicant: Apple Inc.

Inventor： Peng Lu ,  Qiaoyang Ye ,  Gang Xiong ,  Glenn J. Bradford ,  Joonyoung Cho ,  Jong-Kae Fwu ,  Bishwarup Mondal

IPC: H04L5/00 ,  H04L7/00 ,  H04J13/00

Abstract: A method is provided to generate and control transmission of reference symbols in a synchronization subframe, wherein a reference symbol includes reference values mapped to a block of K subcarriers. The method includes generating data corresponding to a basic subsequence of K−R1−R2 reference values, where R1 and R2 are integers such that 1≤R1+R2

公开(公告)号：US20200314679A1

公开(公告)日：2020-10-01

申请号：US16809990

申请日：2020-03-05

Applicant: APPLE INC.

Inventor： Youn Hyoung Heo ,  Yujian Zhang ,  Jong-Kae Fwu

IPC: H04W28/02 ,  H04W4/70 ,  H04W76/30 ,  H04W76/28 ,  H04W72/04 ,  H04W40/00 ,  H04W40/24 ,  H04W52/02 ,  H04W52/04 ,  H04B17/318 ,  H04W76/12 ,  H04W76/15 ,  H04W76/23 ,  H04W76/27 ,  H04J3/16 ,  H04J11/00 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04L12/24 ,  H04L29/06 ,  H04L29/08 ,  H04W8/08 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/08 ,  H04W28/16 ,  H04W36/00 ,  H04W36/22 ,  H04W48/16 ,  H04W48/20 ,  H04W52/14 ,  H04W72/02 ,  H04W72/08 ,  H04W72/12 ,  H04W74/00 ,  H04W88/02 ,  H04W76/16 ,  H04L12/26 ,  H04W36/14

Abstract: Embodiments of a system and method for providing DRX enhancements in LTE systems are generally described herein. In some embodiments, a system control module is provided for controlling communications via a communications interface. A processor is coupled to the system control module and is arranged to implement an inactivity timer and an on-duration timer for determining an active time for monitoring subframes on the physical downlink control channel for control signals, the processor further monitoring subframes after the active time.

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.