公开(公告)号：US11765764B2

公开(公告)日：2023-09-19

申请号：US17900904

申请日：2022-09-01

Applicant: Apple Inc.

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

IPC: H04W72/542 ,  H04B7/06 ,  H04L5/00 ,  H04W72/541 ,  H04B7/0417

CPC classification number: H04W72/542 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0039 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/541

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.

公开(公告)号：US11757512B2

公开(公告)日：2023-09-12

申请号：US17199901

申请日：2021-03-12

Applicant: Apple Inc.

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

IPC: H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0408 ,  H04L1/1812 ,  H04W76/27 ,  H04L1/00 ,  H04W72/23 ,  H04L1/1607

CPC classification number: H04B7/0626 ,  H04B7/0408 ,  H04B7/0632 ,  H04B7/0639 ,  H04L1/0026 ,  H04L1/1812 ,  H04L5/0048 ,  H04W72/23 ,  H04W76/27 ,  H04L1/0031 ,  H04L1/1671 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0057

Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes). The second circuitry may be operable to generate an Uplink (UL) transmission carrying a Layer Indicator (LI) based at least on a number of PT-RS Antenna Ports (APs) associated with the PT-RSes.

公开(公告)号：US20220191898A1

公开(公告)日：2022-06-16

申请号：US17440095

申请日：2020-05-08

Applicant: Apple Inc.

Inventor： Victor Sergeev ,  Alexei Davydov ,  Gregory Morozov

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00 ,  H04W74/08

Abstract: A method for slot offset determination for non-terrestrial networks includes receiving a physical downlink control channel (PDCCH) including downlink control information (DCI) scheduling transmission of a physical uplink shared channel (PUSCH) and receiving a slot offset for transmission of the PUSCH. An additional slot offset is determined based on a timing advance value. A total slot offset is determined based on the slot offset and the additional slot offset. The PUSCH is transmitted based on the total slot offset and the timing advance value.

公开(公告)号：US20220190939A1

公开(公告)日：2022-06-16

申请号：US17418092

申请日：2020-01-02

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Yingzhu Zhao ,  Guotong Wang ,  Victor Sergeev ,  Alexei Davydov

IPC: H04B17/336 ,  H04W24/10

Abstract: Systems, apparatuses, methods, and computer-readable media are provided for framework of layer 1 signal-to-interference plus noise ratio (L1-SINR) measurement and reporting based on channel measurement and interference measurement. The channel measurement is performed on a first set of reference signal (RS) resources, and the interference measurement is performed on a second set of RS resources. Each of the second set of RS resources is mapped to each of the first set of RS resources. The L1-SINR is determined from a first RS resource of the first set of RS resources and a second RS resource of the send set of RS resources, where the first RS resource is mapped to the second RS resource. A message including the L1-SINR is generated and transmitted to the access node.

公开(公告)号：US11070320B2

公开(公告)日：2021-07-20

申请号：US16477376

申请日：2018-06-15

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Seung Hee Han ,  Debdeep Chatterjee ,  Gang Xiong ,  Victor Sergeev ,  Ajit Nimbalker ,  Dmitry Dikarev

IPC: H04L5/00 ,  H04L1/16 ,  H04W76/27 ,  H04B7/06

Abstract: In embodiments, a base station may identify a parameter related to a zero power (ZP) resource element (RE) mapping set in a physical resource block (PRB). The ZP RE mapping set may relate to resources that are not to be used to transmit a physical channel transmission. The base station may then transmit, to a user equipment (UE), an indication of the ZP RE mapping set. Other embodiments may be described and/or claimed.

公开(公告)号：US11025326B2

公开(公告)日：2021-06-01

申请号：US16479195

申请日：2018-06-13

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Sameer Pawar ,  Wook Bong Lee ,  Yushu Zhang ,  Victor Sergeev ,  Joonyoung Cho ,  Dmitry Dikarev

IPC: H04B7/06

Abstract: Herein described are apparatuses, systems, and methods for measurement and reporting of channel state information within wireless network systems. In embodiments, an apparatus for a user equipment (UE) may include memory to store a rank indicator (RI), a precoding matrix index (PMI), and a channel quality indicator (CQI) of channel state information (CSI) for the UE. The apparatus may further include circuitry to concatenate the RI, the PMI, and the CQI to produce a concatenated CSI element, generate a CSI report that includes the concatenated CSI element, and cause the CSI report to be transmitted to a base station within a single slot. Other embodiments may be described and/or claimed.

公开(公告)号：US10925005B2

公开(公告)日：2021-02-16

申请号：US16079494

申请日：2017-03-23

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Hyejung Jung ,  Gregory Morozov ,  Victor Sergeev

IPC: H04W52/14 ,  H04W52/42 ,  H04W52/58

Abstract: This disclosure proposes to use multiple power control loops in the uplink. Each power control loop may be associated with a respective antenna beam transmitted from an antenna array of the electronic device (e.g. UE) in the uplink. For example, a beam (or uplink signal) may be associated with 1, 2 or even more MIMO layer. Hence, in this latter case, each power control loop may be associated with a respective set of one or more MIMO layers. This concept is application to open-loop, closed-loop power control or both.

公开(公告)号：US10924163B2

公开(公告)日：2021-02-16

申请号：US16609294

申请日：2018-06-04

Applicant: Apple Inc.

Inventor： Alexei Dayvdov ,  Gregory V. Morozov ,  Yushu Zhang ,  Victor Sergeev ,  Wook Bong Lee ,  Dmitry Dikarev

IPC: H04B7/06 ,  H04B7/0417 ,  H04B7/0426 ,  H04B7/0456

Abstract: Network devices and systems in 5G advance long term evolution (LTE) and new radio (NR) infrastructures utilize beam management operations to ensure communications for channel state information (CSI) reporting by a user equipment (UE). CSI report configuration reporting settings are processed based on a codebook subset restriction to indicate pre-coding matrix indicators (PMIs) that are restricted and non-restricted for PMI reporting associated with a rank indicator (RI). Based on the codebook subset restriction, an advanced CSI codebook or a new radio (NR) codebook is generated to be transmitted on non-restricted beams of the codebook subset restriction.