公开(公告)号：US11611939B2

公开(公告)日：2023-03-21

申请号：US15567820

申请日：2015-09-25

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Vadim Sergeyev ,  Gregory V. Morozov

IPC: H04W52/14 ,  H04W52/16 ,  H04W52/36 ,  H04W72/04 ,  H04L27/00 ,  H04L5/00

Abstract: Examples include techniques for determining power offsets of a physical downlink shared channel (PDSCH). In some examples higher and physical layer signaling may be provided to user equipment (UE) by a base station such as an evolved Node B to enable the UE to determine power offset values for a multiplexed PDSCH having a serving PDSCH and a co-scheduled PDSCH transmitted via use of same time and frequency resources. The determined power offset values for use by the UE to demodulate the serving PDSCH and mitigate possible interference caused by the co-scheduled PDSCH. Both the UE and the eNB may operate in compliance with one or more 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) standards.

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.

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：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：US11463999B2

公开(公告)日：2022-10-04

申请号：US16882675

申请日：2020-05-25

Applicant: Apple Inc.

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

IPC: H04W24/08 ,  H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L69/323

Abstract: Dynamic transmission of non-zero power channel state information resource signals and interference measurement resources is described. Such dynamic transmission reduces or eliminates a need to buffer and store channel and interference measurements The described approach also reduces the overhead due to transmission of those resources and enables flexible time-domain channel state information requests.

公开(公告)号：US20200351845A1

公开(公告)日：2020-11-05

申请号：US16882675

申请日：2020-05-25

Applicant: Apple Inc.

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

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L29/08

Abstract: Dynamic transmission of non-zero power channel state information resource signals and interference measurement resources is described. Such dynamic transmission reduces or eliminates a need to buffer and store channel and interference measurements The described approach also reduces the overhead due to transmission of those resources and enables flexible time-domain channel state information requests.