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    REDUCED CSI (CHANNEL STATE INFORMATION)-RS (REFERENCE SIGNAL) DENSITY SUPPORT FOR FD (FULL DIMENSIONAL)-MIMO (MULTIPLE INPUT MULTIPLE OUTPUT) SYSTEMS
    3.
    发明申请
    REDUCED CSI (CHANNEL STATE INFORMATION)-RS (REFERENCE SIGNAL) DENSITY SUPPORT FOR FD (FULL DIMENSIONAL)-MIMO (MULTIPLE INPUT MULTIPLE OUTPUT) SYSTEMS 有权

    公开(公告)号：US20220295496A1

    公开(公告)日：2022-09-15

    申请号：US17745112

    申请日：2022-05-16

    Applicant: Apple Inc.

    Inventor： Alexei Davydov ,  Gregory V. Morozov ,  Sameer Pawar

    IPC: H04W72/08 ,  H04B17/336 ,  H04J13/16 ,  H04L5/00 ,  H04W72/04

    Abstract: Techniques discussed herein can facilitate reduced density CSI (Channel State Information)-RS (Reference Signals). One example embodiment can be employed at a UE (User Equipment) and can comprise processing circuitry configured to receive and process a configuration message that comprises one or more configuration parameters for one or more CSI (Channel State Information)-RS (Reference Signal) APs (Antenna Ports) of a configurable density CSI-RS. The configuration parameters indicate a density of CSI-RS resource per Physical Resource Block (PRB) per CSI-RS AP and a PRB offset. The processing circuitry is further configured to determine a set of REs (Resource Elements) for the one or more CSI-RS APs of the configurable density CSI-RS based on the one or more configuration parameters and perform measurements on the configurable density CSI-RS from the set of REs to determine one or more CSI parameters. The one or more configuration parameters are provided per CSI-RS resource configuration.

    SYNCHRONIZATION SIGNAL TRANSMISSION TECHNIQUES
    4.
    发明申请
    SYNCHRONIZATION SIGNAL TRANSMISSION TECHNIQUES 有权

    公开(公告)号：US20210409111A1

    公开(公告)日：2021-12-30

    申请号：US17447463

    申请日：2021-09-13

    Applicant: APPLE INC.

    Inventor： Dae Won Lee ,  Seunghee Han ,  Gregory V. Morozov ,  Alexei Davydov ,  Hong He

    IPC: H04B7/26 ,  H04L27/26 ,  H04W56/00

    Abstract: Systems and methods for synchronizing communications between a User Equipment (UE) and Base Station (BS) using a synchronization signal structure. The synchronization signal structure can include a sequence of Synchronization Signals (SS) including repetitions of a synchronization signal burst set. The synchronization signal burst set can include a plurality of synchronization signal bursts. The synchronization signal bursts can include a plurality of synchronization signal blocks, wherein the synchronization signal blocks can include a plurality of Synchronization Signals (SS).

    LONG TERM EVOLUTION (LTE) CONTROL REGION FOR DOWNLINK TRANSMISSIONS FOR ENHANCED MACHINE TYPE COMMUNICATIONS (EMTC)
    5.
    发明申请
    LONG TERM EVOLUTION (LTE) CONTROL REGION FOR DOWNLINK TRANSMISSIONS FOR ENHANCED MACHINE TYPE COMMUNICATIONS (EMTC) 有权

    公开(公告)号：US20210168577A1

    公开(公告)日：2021-06-03

    申请号：US17265777

    申请日：2019-08-08

    Applicant: APPLE INC.

    Inventor： Qiaoyang Ye ,  Gregory V. Morozov ,  Debdeep Chatterjee

    IPC: H04W4/70 ,  H04W72/04 ,  H04W8/24

    Abstract: Technology for an eNodeB operable to perform downlink (DL) transmissions using a Long Term Evolution (LTE) control region of a subframe for enhanced machine type communication (eMTC) is disclosed. The eNodeB can encode a system information block type 1 bandwidth reduced (SIB1-BR) for transmission 5 to a bandwidth reduced low complexity or coverage enhancement (BL/CE) user equipment (UE). The SIB1-BR can include an indication that the LTE control region in the subframe includes information for at least one of a machine type communication (MTC) physical downlink control channel (MPDCCH) transmission or a physical downlink shared channel (PDSCH) transmission. 10 The eNodeB can encode at least one of the MPDCCH transmission or the PDSCH transmission for delivery in a downlink over the LTE control region in the subframe to the BL/CE UE.

    CSI (channel state information)-RS (reference signal) overhead reduction for class B FD (full dimensional)-MIMO (multiple input multiple output) systems
    7.
    发明授权
    CSI (channel state information)-RS (reference signal) overhead reduction for class B FD (full dimensional)-MIMO (multiple input multiple output) systems 有权

    公开(公告)号：US11483842B2

    公开(公告)日：2022-10-25

    申请号：US16067929

    申请日：2016-12-23

    Applicant: Apple Inc.

    Inventor： Alexei Davydov ,  Gregory V. Morozov ,  Victor Sergeev

    IPC: H04W72/08 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0417

    Abstract: Techniques for measuring CSI (Channel State Information) based on beamformed CSI-RS having reduced overhead are discussed. One example embodiment configured to be employed in a UE (User Equipment) comprises a memory; and one or more processors configured to: process higher layer signaling indicating one or more CSI-RS resources associated with a plurality of REs (Resource Elements) comprising a RE for each CSI-RS resource for each of one or more CSI-RS APs (Antenna Ports) in each of a plurality of continuous PRBs (physical resource blocks); process additional higher layer signaling comprising one or more CSI-RS parameters that indicate a subset of the plurality of REs associated with a beamformed CSI-RS transmission; decode one or more CSI-RSs from the indicated subset; and measure one or more CSI parameters based on the decoded one or more CSI-RSs.

    CSI MEASUREMENT AND REPORT QUALITY DEFINITION FOR 5G NR MULTI-TRP
    8.
    发明申请
    CSI MEASUREMENT AND REPORT QUALITY DEFINITION FOR 5G NR MULTI-TRP 有权

    公开(公告)号：US20210359742A1

    公开(公告)日：2021-11-18

    申请号：US17287186

    申请日：2019-10-30

    Applicant: Apple Inc.

    Inventor： Bishwarup Mondal ,  Yushu Zhang ,  Alexei Davydov ,  Gregory V. Morozov ,  Victor Sergeev

    IPC: H04B7/06 ,  H04B7/0417 ,  H04W24/10 ,  H04W72/12 ,  H04W72/04

    Abstract: Methods, systems, and circuitries for configuring, measuring, and reporting channel state information are described. In one embodiment, an apparatus for a user equipment device (UE) includes processors configured to determine first channel state information (CSI) reference signal (RS) resource associated with a serving cell for the UE and determine a second CSI-RS resource associated with a non-serving cell for the UE. A first reference signal received in the first CSI-RS resource and a second reference signal received in the second CSI-RS resource are measured. First report quantities characterizing a channel between the UE and the serving cell are calculated based on the measurement of the first reference signal and second report quantities characterizing a channel between the UE and the non-serving cell are calculated based on the measurement of the second reference signal. The first and second report quantities are reported to the serving cell.

    Synchronization signal transmission techniques
    9.
    发明授权
    Synchronization signal transmission techniques 有权

    公开(公告)号：US11121768B2

    公开(公告)日：2021-09-14

    申请号：US16349960

    申请日：2018-01-04

    Applicant: APPLE INC.

    Inventor： Dae Won Lee ,  Seunghee Han ,  Gregory V. Morozov ,  Alexei Davydov ,  Hong He

    IPC: H04J3/00 ,  H04B7/26 ,  H04L27/26 ,  H04W56/00

    Abstract: Systems and methods for synchronizing communications between a User Equipment (UE) and Base Station (BS) using a synchronization signal structure. The synchronization signal structure can include a sequence of Synchronization Signals (SS) 5 including repetitions of a synchronization signal burst set. The synchronization signal burst set can include a plurality of synchronization signal bursts. The synchronization signal bursts can include a plurality of synchronization signal blocks, wherein the synchronization signal blocks can include a plurality of Synchronization Signals (SS).

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