公开(公告)号：US11044120B2

公开(公告)日：2021-06-22

申请号：US15765692

申请日：2016-06-23

Applicant: Apple Inc.

Inventor： Alexei Davydov

IPC: H04L12/26 ,  H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0456

Abstract: Embodiments can provide an apparatus for a User Equipment (UE) for processing a Channel State Information Reference signal (CSI-RS) associated with a prescribed CSI-RS resource configuration, comprising CSI-RS resources, relating to a predetermined plurality of antenna ports; the apparatus comprising circuitry to: process data associated with the prescribed CSI-RS resource configuration relating to the predetermined plurality of antenna ports, said CSI-RS resource configuration comprising multiplexing data to provide an indication of the multiplexing of the CSI-RS signal over the CSI-RS resources; process data associated with a CSI-RS signal conveyed using the CSI-RS resources according to the CSI-RS resource configuration to support a channel estimation using the data associated with the CSI-RS signal.

公开(公告)号：US10965351B2

公开(公告)日：2021-03-30

申请号：US16399731

申请日：2019-04-30

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Yuan Zhu ,  Gregory V. Morozov

IPC: H04B7/0456 ,  H04L25/02 ,  H04L5/00 ,  H04B7/06

Abstract: A method comprises configuring a transmission mode for a user equipment (UE) based on user equipment specific reference signals (UE-RS) and configuring one or more precoding resource groups; and providing a dynamic indication to indicate which precoding resource group is valid for a physical downlink shared channel.

公开(公告)号：US10939321B2

公开(公告)日：2021-03-02

申请号：US16126999

申请日：2018-09-10

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Seung Hee Han ,  Debdeep Chatterjee ,  Hong He ,  Gregory V. Morozov ,  Ajit Nimbalker ,  Fatemeh Hamidi-Sepehr ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W28/02

Abstract: Technology for a user equipment (UE) operable to determine a transport block size (TBS) is disclosed. The UE can determine a number of assigned resource elements (REs) in one or more symbols for a transport block. The UE can determine a reference number of REs per physical resource block (PRB) in the transport block based on a reference number of REs for the transport block corresponding to each PRB and an assigned number of PRBs for the transport block. The UE can determine a TBS for the transport block based at least on the reference number of REs per PRB in the transport block. The UE can encode information in a selected transport block for transmission via a physical uplink shared channel (PUSCH) to a Next Generation NodeB (gNB) in accordance with the TBS determined at the UE.

公开(公告)号：US20210050887A1

公开(公告)日：2021-02-18

申请号：US17087444

申请日：2020-11-02

Applicant: Apple Inc.

Inventor： Dae Won Lee ,  Seunghee Han ,  Ajit Nimbalker ,  Alexei Davydov ,  Paul C. Wei ,  Dmitry Dikarev

IPC: H04B7/0413 ,  H04L1/00 ,  H04L5/00

Abstract: Embodiments of a Generation Node-B (gNB), User Equipment (UE) and methods for communication are generally described herein. The gNB may map data symbols to resource elements (REs) of virtual resource blocks (VRBs). The gNB may interleave the data symbols, on a per-VRB basis, to spatial layers of a multi-layer multiple-input multiple-output (MIMO) transmission. The data symbols may be interleaved based on different interleave patterns of VRB indexes for the spatial layers. The gNB may map the interleaved data symbols of the spatial layers to REs of physical resource blocks (PRBs) for orthogonal frequency division multiplexing (OFDM) transmission.

公开(公告)号：US10925066B2

公开(公告)日：2021-02-16

申请号：US16479556

申请日：2018-05-04

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Dae Won Lee ,  Gang Xiong ,  Yushu Zhang ,  Wook Bong Lee

IPC: H04W72/04 ,  H04B7/08 ,  H04L5/00 ,  H04W56/00 ,  H04W72/02

Abstract: Technology for a user equipment (UE) operable for quasi-co-location (QCL) is disclosed. The UE can demodulate a synchronization signal (SS) block transmitted by a gNB from a first antenna port, wherein one or more of a Doppler shift, a Doppler spread, an average delay, a delay spread, and spatial receiving parameters are derived from the SS block. The UE can decode a QCL indication that provides an assumption of QCL between a first reference signal of the first antenna port and a second reference signal of a second antenna port. The UE can demodulate the physical channel or the reference signal transmitted by the gNB from the second antenna port, using one or more of the Doppler shift, the Doppler spread, the average delay, the delay spread, and the spatial receiving parameters based on the assumption of QCL.

公开(公告)号：US10924175B2

公开(公告)日：2021-02-16

申请号：US16489913

申请日：2018-04-02

Applicant: Apple Inc.

Inventor： Guotong Wang ,  Yushu Zhang ,  Alexei Davydov ,  Gang Xiong

IPC: H04B7/06 ,  H04B17/318 ,  H04B7/08 ,  H04W52/36 ,  H04W72/04 ,  H04W72/08

Abstract: Network devices and systems in 5G and new radio (NR) infrastructures can utilize beam management operations to ensure communications for beam management procedure triggering including beam reporting, even during fall-back mode when the current receive (Rx) beam for downlink (DL) and transmit (Tx) beam for uplink (UL) fail. Additionally, reduction in overhead can be achieved with a reference beam pair link based beam reporting in a fall-back mode or not. This beam reporting can be a group based beam reporting and based on Reference Signal Received Powers (RSRPs) of beams and a differential RSRP corresponding thereto.

公开(公告)号：US10863494B2

公开(公告)日：2020-12-08

申请号：US16252294

申请日：2019-01-18

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Alexei Davydov ,  Guotong Wang ,  Gang Xiong ,  Hong He

IPC: H04W72/04 ,  H04L5/00

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for time domain resource allocations in wireless communications systems. Disclosed embodiments include time-domain symbol determination and/or indication using a combination of higher layer and downlink control information signaling for physical downlink shared channel and physical uplink shared channel; time domain resource allocations for mini-slot operations; rules for postponing and dropping for multiple mini-slot transmission; and collision handling of sounding reference signals with semi-statically or semi-persistently configured uplink transmissions. Other embodiments may be described and/or claimed.

公开(公告)号：US10812173B2

公开(公告)日：2020-10-20

申请号：US16562111

申请日：2019-09-05

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Hyejung Jung ,  Gregory Morozov

IPC: H04B7/08 ,  H04B7/024

Abstract: Systems and technologies described herein provide functionality for a cellular base station to dynamically indicate a reception (Rx) beam to be used by a user equipment (UE). The Rx beam can be indicated explicitly or implicitly. The UE can, for example, use the Rx beam for Physical Downlink Shared Channel (PDSCH) reception, Channel State Information Reference Signal (CSI-RS) measurements, and/or Channel State Information (CSI) calculation at the UE. Systems and technologies described herein are generally useful for systems that use multiple transmission (Tx) beams and/or that support Coordinated Multipoint (CoMP) transmission technology.

公开(公告)号：US10805017B2

公开(公告)日：2020-10-13

申请号：US16148905

申请日：2018-10-01

Applicant: Apple Inc.

Inventor： Andrey Chervyakov ,  Alexei Davydov ,  Yang Tang ,  Anatoliy Ioffe

IPC: H04B17/29 ,  H04B17/318 ,  H04B17/18 ,  H04W24/10 ,  H04W24/06

Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for UE baseband-demodulation-performance tests in new radio (NR). An over-the-air (OTA) test environment with optimized signaling over the test interface by enabling feedback in the test system may achieve adequate baseband emulation of multipath utilizing NR reference signals. Various embodiments describe how to realize a test loop initialization and achieve better test certainty and controllability over OTA tests.

公开(公告)号：US20200252109A1

公开(公告)日：2020-08-06

申请号：US16730893

申请日：2019-12-30

Applicant: Apple Inc.

Inventor： Alexei Davydov

IPC: H04B7/0417 ,  H04L5/00 ,  H04B7/06 ,  H04B7/0456

Abstract: Apparatuses and methods are disclosed for supporting a UE in reporting of a selection of an NZP CSI-RS resource to an eNB supporting FD-MIMO communication. Each NZP CSI-RS resource is associated with a unique NZP CRI (or ‘Beam Index’) on a given serving cell. The UE may select an NZP CSI-RS resource for CSI calculation and reporting to the eNB based on processed CSI-RS signals received at an antenna of the UE from the eNB of a serving cell of the UE based on a CSI-RS resource configuration for the UE signaled from the eNB. The UE may report a CRI and a CSI of the selected NZP CSI-RS resource to the eNB of the serving cell of the UE based on a CRI reporting configuration of the UE signaled from the eNB.