公开(公告)号：US11558796B2

公开(公告)日：2023-01-17

申请号：US16865796

申请日：2020-05-04

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Alexander Maltsev ,  Gregory Morozov

IPC: H04W36/14 ,  H04L1/00 ,  H04L61/5007 ,  H04W12/02 ,  H04W76/14 ,  H04W76/11 ,  H04W76/10 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/06 ,  H04J11/00 ,  H04L5/00 ,  H04L12/46 ,  H04L9/40 ,  H04W24/10 ,  H04W28/02 ,  H04W36/00 ,  H04W36/22 ,  H04W48/08 ,  H04W48/16 ,  H04W52/02 ,  H04W56/00 ,  H04W68/00 ,  H04W72/00 ,  H04W72/04 ,  H04W88/08 ,  H04W88/06 ,  H04W8/08 ,  H04W84/12 ,  H04W88/16

Abstract: Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an evolved node B (eNB) may comprise a processor circuit, a communication component for execution by the processor circuit to receive a channel quality index for a physical downlink shared channel (PDSCH), the channel quality index associated with a defined reference resource, and a selection component for execution by the processor circuit to select a modulation and coding scheme (MCS) for transmission over the PDSCH of user equipment (UE) data in one or more resource blocks, the selection component to compensate for a difference between a cell-specific reference signal (CRS) overhead of the defined reference resource and a CRS overhead of the one or more resource blocks when selecting the MCS. Other embodiments are described and claimed.

公开(公告)号：US11336423B2

公开(公告)日：2022-05-17

申请号：US16786953

申请日：2020-02-10

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Gregory Morozov ,  Alexander Maltsev ,  Vadim Sergeyev ,  Ilya Bolotin

IPC: H04L5/14 ,  H04W4/70 ,  H04W76/11 ,  H04W76/40 ,  H04L1/00 ,  H04L27/26 ,  H04L5/00 ,  H04W52/14 ,  H04B7/024 ,  H04B7/0456 ,  H04W52/24 ,  H04W4/06 ,  H04W24/02 ,  H04W72/04 ,  H04W72/08 ,  H04J3/12 ,  H04W68/02 ,  H04J11/00 ,  H04L1/18 ,  H04W56/00 ,  H04B7/06 ,  H04W72/02 ,  H04W84/14 ,  H04W52/34 ,  H04W88/02 ,  H04W88/08 ,  H04W72/12

Abstract: Technology for a user equipment (UE) operable to adjust a receiver timing is disclosed. The UE can decode a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system. The UE can generate a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes. The UE can determine a composite received RS timing from the plurality of received RS timings. The UE can adjust the receiver timing based on the composite received RS timing.

公开(公告)号：US20230113485A1

公开(公告)日：2023-04-13

申请号：US18078438

申请日：2022-12-09

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Alexander Maltsev ,  Gregory Morozov

IPC: H04W36/14 ,  H04L1/00 ,  H04L61/5007 ,  H04W12/02 ,  H04W72/21 ,  H04W72/23 ,  H04W72/30 ,  H04W76/14 ,  H04W76/11 ,  H04W76/10 ,  H04B7/024 ,  H04B7/0456 ,  H04B7/06 ,  H04J11/00 ,  H04L5/00 ,  H04L12/46 ,  H04L9/40 ,  H04W24/10 ,  H04W28/02 ,  H04W36/00 ,  H04W36/22 ,  H04W48/08 ,  H04W48/16 ,  H04W52/02 ,  H04W56/00 ,  H04W68/00 ,  H04W88/08

Abstract: Various embodiments are generally directed to improved channel quality information feedback techniques. In one embodiment, for example, an apparatus for a base station is provided that includes a radio interface and a processor coupled to the radio interface. The processor is configured to receive a channel quality indicator (CQI) index, wherein the CQI index is based on a channel state information (CSI) reference resource, further wherein a first three orthogonal frequency-division multiplexing (OFDM) symbols of the CSI reference resource are occupied by control signals, select a modulation and coding scheme (MCS) for a physical downlink shared channel (PDSCH) based on the CQI index, and cause transmission of the PDSCH based on the selected MCS via the radio interface. Other embodiments are described and claimed.

公开(公告)号：US20200252194A1

公开(公告)日：2020-08-06

申请号：US16786953

申请日：2020-02-10

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Gregory Morozov ,  Alexander Maltsev ,  Vadim Sergeyev ,  Ilya Bolotin

IPC: H04L5/14 ,  H04W72/04 ,  H04W72/02 ,  H04L27/26 ,  H04B7/06 ,  H04W56/00 ,  H04L1/18 ,  H04J11/00 ,  H04W68/02 ,  H04L5/00 ,  H04J3/12 ,  H04W72/08 ,  H04W24/02 ,  H04W4/06 ,  H04W52/24 ,  H04B7/0456 ,  H04B7/024 ,  H04W52/14 ,  H04L1/00 ,  H04W76/40 ,  H04W76/11 ,  H04W4/70

Abstract: Technology for a user equipment (UE) operable to adjust a receiver timing is disclosed. The UE can decode a plurality of channel-state information reference signals (CSI-RSs) received from a plurality of cooperating nodes, wherein the plurality of cooperating nodes are included in a coordination set of a Coordinated MultiPoint (CoMP) system. The UE can generate a plurality of received RS timings from the plurality of CSI-RSs, wherein the received RS timings represent timings from the plurality of cooperating nodes. The UE can determine a composite received RS timing from the plurality of received RS timings. The UE can adjust the receiver timing based on the composite received RS timing.

公开(公告)号：US10862645B2

公开(公告)日：2020-12-08

申请号：US16408107

申请日：2019-05-09

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Gregory Morozov ,  Vadim Sergeyev ,  Alexander Maltsev ,  Ilya Bolotin

IPC: H04L5/00 ,  H04W72/04 ,  H04B7/0413 ,  H04B7/024

Abstract: Methods, systems, and storage media for providing multi-cell, multi-point single user (SU) multiple input and multiple output (MIMO) operations are described. In embodiments, an apparatus may receive and process a first set of one or more independent data streams received in a downlink channel from a first transmission point. The apparatus may receive and process a second set of one or more independent data streams received in a downlink channel from a second transmission point. The apparatus may process control information received from the first transmission point or the second transmission point. The control information may include an indication of a quasi co-location assumption to be used for estimating channel characteristics for reception of the first set of one or more independent data streams or the second set of one or more independent data streams. Other embodiments may be described and/or claimed.