公开(公告)号：US11757506B2

公开(公告)日：2023-09-12

申请号：US17480049

申请日：2021-09-20

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yuan Zhu ,  Gang Xiong ,  Ralf Bendlin ,  Jong-Kae Fwu

IPC: H04B7/06 ,  H04B7/0408 ,  H04B7/0456 ,  H04L5/00 ,  H04W84/04

CPC classification number: H04B7/0617 ,  H04B7/0408 ,  H04B7/0456 ,  H04B7/063 ,  H04B7/0626 ,  H04L5/0051 ,  H04L5/0057 ,  H04W84/042

Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.

公开(公告)号：US11737171B2

公开(公告)日：2023-08-22

申请号：US17692607

申请日：2022-03-11

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Glenn J. Bradford ,  Yushu Zhang ,  Jong-Kae Fwu ,  Yuan Zhu

IPC: H04L5/00 ,  H04W88/06 ,  H04L1/1829 ,  H04W72/23 ,  H04W76/27 ,  H04B7/06 ,  H04L1/1812 ,  H04L5/14 ,  H04W72/0446 ,  H04B7/0413

CPC classification number: H04W88/06 ,  H04B7/0626 ,  H04L1/1812 ,  H04L1/1861 ,  H04L5/00 ,  H04L5/0055 ,  H04L5/14 ,  H04W72/0446 ,  H04W72/23 ,  H04W76/27 ,  H04B7/0413

Abstract: Devices for and methods of providing low latency 5G FDD communications are generally described. A HARQ ACK/NACK for an xPDSCH is transmitted in the xPUCCH of the same or next subframe as the xPDSCH and xPDCCH. An xPUSCH is generated in the same subframe in response to an xPDCCH and HARQ ACK/NACK response is carried by another xPDCCH or xPHICH in the same or next sub frame. The xPDCCH and the xPUCCH are at opposite ends of the same subframe, DL and UL subframe are delayed relative to each other, or at least one of the DL and UL subframe has an additional blank portion, portion with data associated with another UE or portion that contains a reference signal, broadcast signal or control information.

公开(公告)号：US11025376B2

公开(公告)日：2021-06-01

申请号：US15574765

申请日：2015-12-15

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Pingping Zong ,  Yujian Zhang ,  Mo-Han Fong ,  Jong-Kae Fwu

IPC: H04L5/00 ,  H04W72/04 ,  H04W4/70 ,  H04W72/00 ,  H04L29/08 ,  H04W88/02

Abstract: Disclosed herein are apparatuses, systems, and methods using or implementing dynamic resource allocation (DRA) of resources for machine-type communication (MTC), as a secondary partition within a system bandwidth. Allocations outside the secondary partition are configured as a primary partition for other than MTC. Apparatuses may perform MTC communications within the secondary partition when DRA configuration information includes allocation information for the secondary partition and the apparatus is configured for MTC. Otherwise, if the apparatus is other than MTC, the apparatus may refrain from performing communications in the secondary partition. Other embodiments are described.

公开(公告)号：US10952188B2

公开(公告)日：2021-03-16

申请号：US16406808

申请日：2019-05-08

Applicant: Apple Inc.

Inventor： Ralf Matthias Bendlin ,  Gang Xiong ,  Jong-Kae Fwu ,  Hong He ,  Yushu Zhang ,  Seunghee Han ,  Yuan Zhu

IPC: H04W72/04 ,  H04L5/00 ,  H04B1/7143 ,  H04L27/26 ,  H04L1/00

Abstract: Methods and apparatus are described for transmitting uplink control information (UCI) over an OFDMA-based uplink. In some embodiments, UCI symbols are mapped to resource elements (REs) in the time/frequency resource grid to maximize frequency diversity. In some embodiments, UCI is mapped in a manner that takes into account channel estimation performance by mapping UCI symbols to those REs that are closest (in terms of OFDM subcarriers/symbols) to REs that carry reference signals.

公开(公告)号：US10917215B2

公开(公告)日：2021-02-09

申请号：US15941504

申请日：2018-03-30

Applicant: APPLE INC.

Inventor： Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Alexei Davydov ,  Jong-Kae Fwu

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for transmission and reception of SPS communications are disclosed herein. User equipment (UE) is configured to receive, in a first subframe, a physical downlink control channel or enhanced physical downlink control channel (PDCCH/EPDCCH) corresponding to semi-persistent scheduling (SPS) activation. The PDCCH/EPDCCH conveys a value of nSCID. The UE configures, based on the SPS activation, a downlink (DL) assignment in a second subframe for receiving an SPS physical downlink shared channel (PDSCH) without a corresponding PDCCH/EPDCCH. The UE determines a reference signal sequence corresponding to the SPS PDSCH using nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation. The UE receives the SPS PDSCH in a second subframe. The UE processes the SPS PDSCH based on the reference signal sequence for the SPS PDSCH in the second subframe using the nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation. The UE is configured for transmission mode 10 (TM10).

公开(公告)号：US10813071B2

公开(公告)日：2020-10-20

申请号：US16538823

申请日：2019-08-13

Applicant: Apple Inc.

Inventor： Seunghee Han ,  Gang Xiong ,  Alexei Davydov ,  Jong-Kae Fwu ,  Gi Wan Choi

IPC: H04W56/00 ,  H04L5/00

Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.

公开(公告)号：US20200287611A1

公开(公告)日：2020-09-10

申请号：US16881212

申请日：2020-05-22

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Huaning Niu ,  Yushu Zhang ,  Jong-Kae Fwu ,  Yuan Zhu ,  Ralf Matthias Bendlin

IPC: H04B7/06 ,  H04J11/00 ,  H04B7/08 ,  H04L5/00 ,  H04L27/26

Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.

公开(公告)号：US11831479B2

公开(公告)日：2023-11-28

申请号：US17096077

申请日：2020-11-12

Applicant: Apple Inc.

Inventor： Seunghee Han ,  Gang Xiong ,  Jong-Kae Fwu ,  Huaning Niu ,  Utsaw Kumar

IPC: H04J3/06 ,  H04L27/26 ,  H04J11/00 ,  H04L5/00 ,  H04W72/23

CPC classification number: H04L27/26025 ,  H04J11/0076 ,  H04L5/0094 ,  H04L27/2613 ,  H04L27/2692 ,  H04J3/0638 ,  H04L5/0048 ,  H04L5/0096 ,  H04W72/23

Abstract: Devices and methods of using xSS are generally disclosed. A UE receives an xPSS with (Nrep) symbols each with a subcarrier spacing of K×a PSS subcarrier spacing and a duration of a PSS symbol/K. PSD subcarriers surround the xPSS and the ZC sequence is punctured to avoid transmission on a DC subcarrier. Guard subcarriers separate the xPSS and PSD when the ZC sequence is less than the occupied BW of the xPSS and at least one element in the ZC sequence is punctured for xPSS symbol generation otherwise. One or more xSSSs and xS-SCHs may follow the xPSS. The xSS may be omnidirectional, each having a same xPSS and different xSSS or xS-SCH or a different xPSS and same xSSS or xS-SCH or beamformed, each having different xPSSs and xSSSs or xS-SCHs or a same xPSS and different xSSS or xS-SCH.

公开(公告)号：US11664958B2

公开(公告)日：2023-05-30

申请号：US17531884

申请日：2021-11-22

Applicant: Apple Inc.

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

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

CPC classification number: H04L5/0098 ,  H04J13/0062 ,  H04L5/001 ,  H04L5/0048 ,  H04L7/007

Abstract: Systems, methods, and baseband processors are provided to generate or process symbols in a synchronization subframe. In one example, a method includes selecting non-consecutive orthogonal frequency division multiplexing (OFDM) symbols in a synchronization subframe. A transmitter is instructed to transmit demodulation reference symbols (DM-RS) on identical first sets of subcarriers in respective OFDM symbols of the selected non-consecutive OFDM symbols for a Physical Broadcast Channel (PBCH) using a same transmit beam, wherein a gap between two subcarriers in a respective set of the identical first sets of subcarriers is three subcarriers. The transmitter is instructed to transmit the PBCH on identical second sets of subcarriers in respective OFDM symbols in the selected non-consecutive OFDM symbols.

公开(公告)号：US11638170B2

公开(公告)日：2023-04-25

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 ,  H04W36/00 ,  H04L65/75 ,  H04W72/20 ,  H04W72/21 ,  H04W72/23 ,  H04W72/52 ,  H04W72/541 ,  H04W40/00 ,  H04W40/24 ,  H04W52/02 ,  H04W52/04 ,  H04B17/318 ,  H04W76/12 ,  H04W76/15 ,  H04W76/23 ,  H04W76/27 ,  H04J3/16 ,  H04J11/00 ,  H04L1/1812 ,  H04L1/1829 ,  H04L1/1867 ,  H04L5/00 ,  H04L5/14 ,  H04L41/50 ,  H04L65/60 ,  H04L67/10 ,  H04W8/08 ,  H04W24/02 ,  H04W24/08 ,  H04W24/10 ,  H04W28/16 ,  H04W36/22 ,  H04W48/16 ,  H04W48/20 ,  H04W52/14 ,  H04W72/02 ,  H04W72/044 ,  H04W72/0453 ,  H04W74/00 ,  H04W88/02 ,  H04W76/16 ,  H04L41/069 ,  H04L43/16 ,  H04W36/14 ,  H04W88/06 ,  H04W72/30 ,  H04W80/10 ,  H04W84/12 ,  H04W88/08 ,  H04W88/18 ,  H04W84/04 ,  H04W88/12 ,  H04W88/14 ,  H04W88/16

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.