公开(公告)号：US11582743B2

公开(公告)日：2023-02-14

申请号：US17388325

申请日：2021-07-29

Applicant: Apple Inc.

Inventor： Alexei Davydov ,  Wook Bong Lee ,  Hong He ,  Seung Hee Han ,  Honglei Miao

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

Abstract: Techniques for transmitting and receiving beamformed transmission(s) of a common search space of a DL (Downlink) control channel are discussed. One example embodiment that can be employed at a UE (User Equipment) comprises processing circuitry configured to: select a set of receive beamforming weights for a DL (Downlink) control channel; and decode one or more control channel sets from a common search space of the DL control channel, wherein each control channel set of the one or more control channel sets is mapped to an associated symbol of one or more symbols of a slot, wherein each control channel set of the one or more control channel sets has an associated transmit beamforming, and wherein each control channel set of the one or more control channel sets comprises a common set of control information.

公开(公告)号：US20220368381A1

公开(公告)日：2022-11-17

申请号：US17811477

申请日：2022-07-08

Applicant: APPLE INC.

Inventor： Jan Schreck ,  Nageen Himayat ,  Hosein Nikopour ,  Feng Xue ,  Ehsan Aryafar ,  Oner Orhan ,  Mustafa R. Akdeniz ,  Wook Bong Lee ,  Jing Zhu

IPC: H04B7/0456 ,  H04B7/0417 ,  H04B7/06 ,  H04L5/00 ,  H04W72/12

Abstract: Apparatuses of a user equipment (UE), a cellular base station, and radio access network (RAN) nodes are disclosed. An apparatus of a wireless communication device includes circuitry configured to measure reference signals received from a plurality of antennas of an other wireless communication device, and circuitry configured to cause one or more antennas of the wireless communication device to transmit information regarding the received reference signals back to the other wireless communication device to enable the other wireless communication device to estimate a utility function for different transmit parameter sets.

公开(公告)号：US20220346102A1

公开(公告)日：2022-10-27

申请号：US17860595

申请日：2022-07-08

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Wook Bong Lee ,  Gang Xiong ,  Hong He ,  Yongjun Kwak ,  Daewon Lee ,  Seung Hee Han ,  Alexei Davydov ,  Guotong Wang

IPC: H04W72/08 ,  H04W76/19 ,  H04W72/04

Abstract: An apparatus is configured to be employed within a base station. The apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to select one or more recovery channels based on one or more recovery factors; determine a beam recovery frame structure using the selected one or more recovery channels and based at least partially on beam correspondence capabilities; and provide the selected one or more recovery channels and the determined beam recovery frame structure to the RF interface for transmission to a user equipment (UE) device.

公开(公告)号：US20210344431A1

公开(公告)日：2021-11-04

申请号：US17234665

申请日：2021-04-19

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Wook Bong Lee ,  Dae Won Lee ,  Seunghee Han ,  Alexei Davydov ,  Guotong Wang ,  Gregory Morozov

IPC: H04B17/327 ,  H04B7/0413 ,  H04B7/06 ,  H04B7/08

Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.

公开(公告)号：US11153863B2

公开(公告)日：2021-10-19

申请号：US16478456

申请日：2018-02-14

Applicant: Apple Inc.

Inventor： Honglei Miao ,  Wook Bong Lee ,  Yushu Zhang ,  Michael Faerber ,  Seunghee Han

IPC: H04W72/04 ,  H04B7/0452 ,  H04B7/06 ,  H04L5/00

Abstract: Embodiments of the present disclosure describe methods and apparatuses for physical downlink control channel (PD-CCH) demodulation reference signal (DMRS) transmission and reception.

公开(公告)号：US11101953B2

公开(公告)日：2021-08-24

申请号：US16473579

申请日：2018-02-05

Applicant: Apple Inc.

Inventor： Wook Bong Lee ,  Alexei Davydov ,  Yushu Zhang ,  Victor Sergeev

IPC: H04W4/00 ,  H04L5/00 ,  H04B7/0456 ,  H04W24/08 ,  H04W72/04

Abstract: An apparatus is configured to be employed within a base station. The apparatus comprises baseband circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to generate control information, the control information including a configured number of ports; receive a plurality of sounding reference signals (SRS) via the RF interface from a user equipment (UE) device, wherein each of the plurality of SRS is associated with one of the one or more precoders; and generate a ranking of a the one or more precoders based on the received plurality of SRS, wherein the plurality of SRS are associated with the one or more precoders.