公开(公告)号：US11647539B2

公开(公告)日：2023-05-09

申请号：US17170232

申请日：2021-02-08

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive a clear channel assessment trigger from a second wireless device, the clear channel assessment trigger associated with a data transmission by the second wireless device. The first wireless device may transmit, based at least in part on a result of a first clear channel assessment procedure, feedback information for the clear channel assessment trigger. The first wireless device may receive the data transmission based at least in part on the feedback information for the first clear channel assessment procedure. The first wireless device may transmit, based at least in part on a result of a second clear channel assessment procedure, feedback information for the data transmission, wherein the first clear channel assessment procedure has a first duration that is longer than a second duration for the second clear channel assessment procedure.

公开(公告)号：US11647496B2

公开(公告)日：2023-05-09

申请号：US16988543

申请日：2020-08-07

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Ahmed Kamel Sadek ,  Tamer Kadous

IPC: H04W72/12 ,  H04W72/04 ,  H04L27/26 ,  H04W72/1268 ,  H04L1/00 ,  H04L1/1812 ,  H04W74/00 ,  H04L1/1607 ,  H04L5/00 ,  H04L1/1822 ,  H04W28/06 ,  H04W74/08

CPC classification number: H04W72/1215 ,  H04L1/0026 ,  H04L1/0031 ,  H04L1/0067 ,  H04L1/1614 ,  H04L1/1819 ,  H04L1/1822 ,  H04L5/0078 ,  H04L5/0094 ,  H04L27/2662 ,  H04W72/0413 ,  H04W72/1268 ,  H04W74/006 ,  H04L1/0003 ,  H04L1/0009 ,  H04W28/06 ,  H04W72/042 ,  H04W74/0808

Abstract: Techniques for autonomous uplink (AUL) transmissions are provided that allow for efficient use of shared radio frequency spectrum band resources. A user equipment (UE) may determine a duration of an AUL transmission and modify an uplink waveform or provide an indication to a base station of one or more channel resources that may be available for base station transmissions, in order to more fully utilize shared radio frequency spectrum band resources within a maximum channel occupancy time (MCOT). A base station may activate or deactivate AUL transmissions through downlink control information (DCI) transmitted to the UE. A UE and base station may exchange various other control information to provide relatively efficient autonomous uplink transmissions and use of the shared radio frequency spectrum band resources.

公开(公告)号：US11638243B2

公开(公告)日：2023-04-25

申请号：US17093466

申请日：2020-11-09

Applicant: QUALCOMM Incorporated

Inventor： Vinay Chande ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Jing Sun ,  Mostafa Khoshnevisan ,  Srinivas Yerramalli ,  Tao Luo

IPC: H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/1273

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive single downlink control information (DCI) that indicates resources for a plurality of transmission configuration indicator (TCI) states for transmitting or receiving communications in a plurality of transmission time intervals (TTIs). The UE may transmit or receive the communications in the plurality of TTIs in accordance with the DCI. Numerous other aspects are provided.

公开(公告)号：US11627608B2

公开(公告)日：2023-04-11

申请号：US17127632

申请日：2020-12-18

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Jing Sun ,  Zhifei Fan ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Wooseok Nam ,  Tao Luo ,  Sungwoo Park

IPC: H04W74/08 ,  H04W76/11 ,  H04W72/04 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a random access configuration for the UE, the random access configuration indicating a subcarrier spacing for random access preambles of a random access procedure and a periodicity of slots including random access channel occasions for transmission of the random access preambles, where the periodicity of the slots is based on the subcarrier spacing for the random access preambles, determining a random access radio network temporary identifier based on the periodicity of the slots and a slot index for a slot in which the UE is to transmit a random access preamble, and transmitting, in the slot, the random access preamble indicating the determined random access radio network temporary identifier.

公开(公告)号：US20230086126A1

公开(公告)日：2023-03-23

申请号：US17481667

申请日：2021-09-22

Applicant: QUALCOMM Incorporated

Inventor： Wooseok Nam ,  Yucheng Dai ,  Tao Luo ,  Jing Sun ,  Junyi Li ,  Peter Gaal ,  Sony Akkarakaran ,  Juan Montojo ,  Srinivas Yerramalli

IPC: H04W72/04 ,  G01S5/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, via first frequency ranges and first time periods, a plurality of sidelink control blocks that each indicate a sidelink positioning reference signal burst pattern for one or more sidelink UEs. The UE may receive, within a second frequency range and during a second time period, a plurality of multiplexed sidelink positioning reference signals from the one or more sidelink UEs in accordance with the sidelink positioning reference signal burst patterns. The UE may determine a position of the UE based at least in part on the receiving of the plurality of multiplexed sidelink positioning reference signals.

公开(公告)号：US11611961B2

公开(公告)日：2023-03-21

申请号：US17228698

申请日：2021-04-12

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Srinivas Yerramalli ,  Wanshi Chen ,  Jing Sun ,  Hao Xu ,  Shimman Arvind Patel

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04L27/00 ,  H04L27/26 ,  H04W72/12 ,  H04W24/10 ,  H04W74/08 ,  H04L5/14 ,  H04W8/22 ,  H04W16/14 ,  H04W72/0446 ,  H04L1/1829 ,  H04L1/1867 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARM) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.

公开(公告)号：US20230085595A1

公开(公告)日：2023-03-16

申请号：US17477349

申请日：2021-09-16

Applicant: QUALCOMM Incorporated

Inventor： Mohammed Ali Mohammed Hirzallah ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang

IPC: H04B7/06 ,  H04B17/10 ,  H04B7/0426

Abstract: Methods, systems, and devices for wireless communication are described. Aspects of the disclosure describe narrow beam-based channel access that enables a device to communicate in a shared radio frequency spectrum band without performing channel access procedures. Specifically, aspects of the disclosure describe techniques for defining one or more directional beams as a narrow beam, where the relative narrowness of the beam may be determined in the context of interference (e.g., as opposed to being defined from a geometric perspective). For example, a particular beam may be determined to be a narrow beam, and therefore associated with communications in shared radio frequency spectrum bands without channel access procedures, based on one or more metrics and a number of spatial streams associated with the beam. A device may use such narrow beams for communications without channel access procedures in shared radio frequency spectrum bands.

公开(公告)号：US11582000B2

公开(公告)日：2023-02-14

申请号：US16406469

申请日：2019-05-08

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Srinivas Yerramalli ,  Jing Sun ,  Tamer Kadous

IPC: H04L5/00 ,  H04W74/08 ,  H04L5/14 ,  H04W16/14 ,  H04L27/26 ,  H04L25/02

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a gap period following a downlink portion of a time division duplexing (TDD) frame. The UE may selectively perform, based at least in part on the gap period, a clear channel assessment (CCA) on a channel of a radio frequency spectrum band. The UE may transmit at least one of a sounding reference signal (SRS) or a physical random access channel (PRACH) preamble in a set of initial symbols of an uplink portion of the TDD frame following the gap period, wherein the SRS or PRACH preamble is frequency-domain multiplexed during the set of initial symbols with one or more of: a demodulation reference signal (DMRS), an uplink data transmission, an uplink control transmission, or a random access transmission.

公开(公告)号：US11570747B2

公开(公告)日：2023-01-31

申请号：US17362164

申请日：2021-06-29

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Piyush Gupta ,  Junyi Li ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Rajat Prakash ,  Marwen Zorgui

IPC: H04W64/00 ,  H04W72/04 ,  H04W4/021 ,  H04W92/18

Abstract: Disclosed are techniques for wireless communication. In an aspect, a target UE receives zone information associated with a set of zones, the zone information indicating, for each of a plurality of candidate UEs for a sidelink-assisted position estimation procedure of the target UE, a zone identifier of a zone in which the respective candidate UE is located. The target UE selects one or more candidate UEs for the sidelink-assisted position estimation procedure based at least in part upon the zone information. The target UE performs the sidelink-assisted position estimation procedure with at least the selected one or more candidate UEs.

公开(公告)号：US11553500B2

公开(公告)日：2023-01-10

申请号：US17037118

申请日：2020-09-29

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Vinay Chande ,  Tao Luo ,  Xiaoxia Zhang ,  Srinivas Yerramalli

IPC: H04W72/08 ,  H04W72/04 ,  H04W72/12 ,  H04B17/318 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00 ,  H04W56/00

Abstract: In a particular implementation, a method of wireless communication includes detecting, at a user equipment (UE) associated with a first base station, one or more interfering beams generated by a second base station. The second base station is a neighboring base station of the first base station. The method also includes transmitting, from the UE to the first base station, an interference identification message indicating the one or more interfering beams. The method further includes receiving, from the first base station, a scheduling message indicating a set of beams of the second base station that are scheduled for use in upcoming transmissions.