公开(公告)号：US11516680B2

公开(公告)日：2022-11-29

申请号：US17089452

申请日：2020-11-04

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Jing Sun ,  Tao Luo ,  Xiaoxia Zhang ,  Sungwoo Park ,  Akula Reddy ,  Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Zhifei Fan ,  Srinivas Yerramalli

IPC: H04W16/28 ,  H04W72/04 ,  H04W56/00 ,  H04B7/06 ,  H04L5/00 ,  H04W76/27 ,  H04W80/02 ,  H04W74/08 ,  H04L25/02

Abstract: Some aspects described herein relate to receiving, in a configuration, a slot format indication, wherein the slot format indication includes directional information indicating spatial directions associated with communications based on the slot format, determining, for a slot indicated by the slot format indication and based on the directional information, the spatial direction, and communicating, within the slot and based on the spatial direction, with one or more nodes.

公开(公告)号：US11510243B2

公开(公告)日：2022-11-22

申请号：US16910830

申请日：2020-06-24

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo ,  Sungwoo Park ,  Wooseok Nam ,  Jing Sun ,  Kaushik Chakraborty ,  Zhifei Fan ,  Mostafa Khoshnevisan

IPC: H04W74/08 ,  H04B7/06 ,  H04W88/08 ,  H04W16/28 ,  H04W72/12 ,  H04W72/04 ,  H04W74/04

Abstract: This disclosure provides systems, methods, and apparatuses for a beam-based channel access countdown procedure. In one aspect, a channel sensing beam may be permitted to include one or more transmit beams and, thus, may differ from a transmit beam that is to be used for a transmission. As such, defining a manner in which a channel access countdown procedure is performed is desirable. Some aspects described herein provide techniques and apparatus for a beam-based channel access countdown procedure. In some aspects, the systems, methods, and apparatuses described herein provide a beam-based channel access countdown procedure that allows a single channel sensing beam, including multiple transmit beams, to be utilized in association with determining channel availability for the multiple transmit beams, thereby improving performance of beam-based directional transmissions.

公开(公告)号：US20220312333A1

公开(公告)日：2022-09-29

申请号：US17209823

申请日：2021-03-23

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan

IPC: H04W52/14 ,  H04W52/18

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling which indicates a resource block indicating a number of reference signal tones and data tones in an uplink transmission. In some cases, the UE may determine a first transmission power for the reference signal tones, and a second transmission power for the data tones that is different from the first transmission power. In some other cases, the UE may identify a frequency allocation for the resource block which allocates a same frequency bandwidth for the reference signal tones and the data tones, and the UE may determine a same transmission power for the reference signal tones and the data tones based on the frequency allocation. Based on the determination of transmission powers, the UE may transmit the reference signal tones and the data tones to a base station.

公开(公告)号：US20220200746A1

公开(公告)日：2022-06-23

申请号：US17133537

申请日：2020-12-23

Applicant: QUALCOMM Incorporated

Inventor： Iyab Issam Sakhnini ,  Tao Luo ,  Juan Montojo ,  Xiaoxia Zhang ,  Jun Ma ,  Zhifei Fan

IPC: H04L5/00 ,  H04J11/00 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may monitor for a transmission of a synchronization signal block that includes a first portion generated using a first waveform type and a second portion using a second waveform type that is different than the first waveform type. The wireless device may detect the first portion of the synchronization signal block based on the first waveform type used for the first portion. After detecting the first portion of the synchronization signal block, the wireless device may process the second portion of the synchronization signal block based on information obtained from the first portion of the synchronization signal block. The information obtained from the first portion of the synchronization signal block may include timing information, frequency information, or both.

公开(公告)号：US11251916B2

公开(公告)日：2022-02-15

申请号：US16567701

申请日：2019-09-11

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Juan Montojo ,  Zhifei Fan ,  Renqiu Wang ,  Yi Huang

IPC: H04L12/50 ,  H04L5/00 ,  H04J11/00 ,  H04L1/16 ,  H04W72/04 ,  H04B7/0456 ,  H04B7/06 ,  H04L1/00

Abstract: Aspects of the present disclosure describe receiving downlink signaling from an access point, determining, based at least in part on the downlink signaling, one or more precoders for uplink signaling, transmitting, to the access point and based at least in part on the one or more precoders, uplink signaling, and receiving, from the access point and based on transmitting the uplink signaling, a precoder indication to use the one or more precoders or one or more other precoders in transmitting uplink communications to the access point.

公开(公告)号：US11246155B2

公开(公告)日：2022-02-08

申请号：US16281828

申请日：2019-02-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Kapil Bhattad ,  Jing Sun ,  Tamer Kadous ,  Srinivas Yerramalli

IPC: H04W72/14 ,  H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and a base station may communicate in an unlicensed spectrum (e.g., a shared radio frequency spectrum band). As such, the UE may determine a codebook size for transmitting hybrid access request (HARQ) acknowledgement (ACK) feedback with respect to the unlicensed spectrum. Accordingly, the UE may base the HARQ ACK codebook size on a number of HARQ processes with which the UE has been configured. Additionally or alternatively, the UE may base the HARQ ACK codebook size on a number and/or duration of downlink channel monitoring occasions indicated by the base station. In some cases, the UE may base the HARQ ACK codebook size on a combination of the techniques described herein.

公开(公告)号：US11234218B2

公开(公告)日：2022-01-25

申请号：US15351216

申请日：2016-11-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Juan Montojo ,  Zhifei Fan

IPC: H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04W72/14 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and apparatuses for uplink descriptor channels are described. An uplink descriptor channel may be used by a user equipment (UE) for providing indications that uplink transmissions over allocated uplink data resources are sent in a configuration different from a configuration indicated by an uplink grant. In various examples an uplink transmission may be transmitted by a UE, and received by a base station, and the uplink transmission may include the uplink descriptor channel with uplink data. An uplink descriptor channel may include indications that uplink control information is included in the uplink transmission, and/or that the uplink transmission employs a number of transmission intervals, a number of channels, and/or a different MCS than those indicated by the uplink grant. A base station may receive the uplink descriptor channel and adjust various parameters of decoding an uplink transmission and/or allocating radio frequency spectrum resources.

公开(公告)号：US20210368539A1

公开(公告)日：2021-11-25

申请号：US17326291

申请日：2021-05-20

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Abdelaziz Ibrahim Abdelaziz Zewail ,  Xiaoxia Zhang ,  Tao Luo ,  Zhifei Fan ,  Jing Sun ,  Wooseok Nam ,  Mehmet Izzet Gurelli

IPC: H04W74/00 ,  H04W74/08 ,  H04L1/00 ,  H04W72/14 ,  H04W56/00

Abstract: Methods, systems, and devices for wireless communications are described in which a user equipment (UE) may transmit a random access message (e.g., msgA or msg3) using a modulation and coding scheme (MCS) selected based on the frequency band and subcarrier spacing utilized for the random access procedure. The MCS may depend on the frequency band and a size of the SCS satisfying a threshold. In some cases, a base station may select and indicate the MCS for the UE. Additionally or alternatively, a phase tracking reference signal may be transmitted along with a random access message to correct for phase noise.

公开(公告)号：US11096128B2

公开(公告)日：2021-08-17

申请号：US15802191

申请日：2017-11-02

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Taesang Yoo ,  Juan Montojo ,  Tao Luo ,  Zhifei Fan

IPC: H04W56/00 ,  H04L27/26 ,  H04W72/04

Abstract: Various aspects described herein relate to techniques for signaling and channel design in wireless communications systems (e.g., a 5G NR system). In an aspect, a method includes identifying a direct current (DC) subcarrier of a synchronization bandwidth, determining whether a synchronization signal transmits on, punctures, or rate matches around the DC subcarrier, and performing synchronization channel processing based on the determination.

公开(公告)号：US20210250779A1

公开(公告)日：2021-08-12

申请号：US17302263

申请日：2021-04-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/26

Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.