公开(公告)号：US20240235691A1

公开(公告)日：2024-07-11

申请号：US18151229

申请日：2023-01-06

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Karoly Becze ,  Jing Sun ,  Xiaoxia Zhang ,  Junyi Li ,  Morteza Soltani ,  Deepu Alex ,  Jason Bush

IPC: H04B10/60 ,  H04B10/11

CPC classification number: H04B10/60 ,  H04B10/11

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support local light biasing for silicon photomultiplier (SiPM)-based photodetectors used in optical wireless communication (OWC). In a first aspect, a photodetector may include a silicon photomultipier (SiPM) having an input sensor configured to detect a light signal and an output interface configured to produce an output signal proportional to an intensity of the light signal detected at the input sensor, and a controllable light source positioned to emit a biasing light signal within a field of view of the input sensor, wherein the controllable light source is configured to emit the biasing light signal within a sensitivity range of the SiPM. When such photodetector is implemented in an OWC receiver, an analysis of the output signal allows the OWC receiver to adjust the biasing light at the controllable light source. Other aspects and features are also claimed and described.

公开(公告)号：US12022509B2

公开(公告)日：2024-06-25

申请号：US17455391

申请日：2021-11-17

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Jing Sun ,  Xiaoxia Zhang ,  Sony Akkarakaran

IPC: H04W74/0808 ,  H04B17/318 ,  H04W16/14 ,  H04W72/044 ,  H04W72/20

CPC classification number: H04W74/0808 ,  H04B17/318 ,  H04W16/14 ,  H04W72/044 ,  H04W72/20

Abstract: Wireless communications systems and methods related to communicating control information are provided. A method of wireless communication performed by a first sidelink user equipment (UE) may include receiving, from a base station (BS), a resource pool (RP) configuration that indicates resources in a licensed frequency band reserved for sidelink control information (SCI), transmitting, to a second sidelink UE, the SCI in the reserved resources, wherein the SCI includes a starting position of channel occupancy time (COT) resources in an unlicensed frequency band, and transmitting, to the second sidelink UE, a physical sidelink shared channel (PSSCH) via the COT resources in the unlicensed frequency band.

公开(公告)号：US11963217B2

公开(公告)日：2024-04-16

申请号：US17406683

申请日：2021-08-19

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Yisheng Xue ,  Xiaoxia Zhang ,  Tamer Kadous

IPC: H04W72/566 ,  H04W52/28 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/56 ,  H04W74/08 ,  H04W74/0833

CPC classification number: H04W72/566 ,  H04W52/281 ,  H04W72/0446 ,  H04W72/23 ,  H04W72/56 ,  H04W74/085

Abstract: A method of wireless communication may include determining a communication operation between a base station and one or more served UEs. The method may further include monitoring for radio frequency (RF) energy on a communication channel at a beginning of a listen before talk (LBT) window of a current frame in a shared spectrum shared between at least one or more opportunistic general authorized users. The method may further include transmitting an LBT trigger signal in response to detection of no RF energy above a minimum energy threshold at the beginning of the LBT window. The method may further include receiving an LBT trigger response signal from the one or more served UEs. The method may also include communicating, by the base station, with the one or more UEs during a channel occupancy time (COT) of the current frame after the LBT window.

公开(公告)号：US11924873B2

公开(公告)日：2024-03-05

申请号：US17151105

申请日：2021-01-15

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Jing Sun ,  Xiaoxia Zhang ,  Yisheng Xue

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may perform a first transmission to one or more receiving devices, the first transmission associated with a transmission type. The transmitting device may determine a feedback response for the first transmission based on monitoring for feedback messages from the one or more receiving devices in response to the first transmission. The transmitting device may select a contention window size for performing one or more subsequent transmissions based at least in part on the feedback response and the transmission type. The transmitting device may perform the one or more subsequent transmissions in accordance with a clear channel assessment procedure using the selected contention window size.

公开(公告)号：US11895700B2

公开(公告)日：2024-02-06

申请号：US17103012

申请日：2020-11-24

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Jing Sun ,  Yisheng Xue ,  Xiaoxia Zhang

IPC: H04W28/04 ,  H04W74/08

CPC classification number: H04W74/0808 ,  H04W28/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, within a resource selection window, a set of resources in which to transmit over an unlicensed sidelink channel. The UE may attempt a listen before talk (LBT) procedure to initiate a channel occupancy time in which to transmit over the unlicensed sidelink channel. The UE may adjust, within at least a portion of the resource selection window, the set of resources in which to transmit over the unlicensed sidelink channel to be contiguous in at least a time domain based at least in part on the LBT procedure succeeding. The UE may transmit, over the unlicensed sidelink channel, using the set of resources that are adjusted to be contiguous in at least the time domain. Numerous other aspects are provided.

公开(公告)号：US11889517B2

公开(公告)日：2024-01-30

申请号：US17308714

申请日：2021-05-05

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Jing Sun ,  Chih-Hao Liu ,  Xiaoxia Zhang ,  Tao Luo ,  Piyush Gupta

IPC: H04W72/23 ,  H04W72/1263 ,  H04L1/1867 ,  H04W72/044 ,  H04L1/1812 ,  H04W72/20

CPC classification number: H04W72/23 ,  H04L1/1819 ,  H04L1/1896 ,  H04W72/0466 ,  H04W72/1263 ,  H04W72/20

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support configured reception with sidelink control information (SCI) repetition over a sidelink. In aspects, a receiving user equipment (UE) may be configured to conduct combined reception/decoding of SCI repetitions (received from a transmitting UE over a sidelink) over multiple time-frequency slots at pre-defined occasions (e.g., occasions configured by a base station) to decode a sidelink transmission. In aspects, a receiving UE may receive from a transmitting UE over a sidelink, a sidelink transmission during a reception occasion that includes a plurality of reception opportunities for the receiving UE. Each reception opportunity of the plurality of reception opportunities includes a repetition of an SCI. The receiving UE decodes the SCI by combining the repetitions of the SCI received in one or more reception opportunities, and decodes a data transmission (e.g., a physical sidelink shared channel (PSSCH) transmission) using the decoded SCI.

公开(公告)号：US11856577B2

公开(公告)日：2023-12-26

申请号：US17305595

申请日：2021-07-09

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Jing Sun ,  Chih-Hao Liu ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L1/18 ,  H04W72/20 ,  H04L1/1812

CPC classification number: H04W72/20 ,  H04L1/1812

Abstract: This disclosure provides systems, methods and apparatuses for indicating sidelink processes for sidelink feedback. A second user equipment (UE) may request hybrid automatic repeat request (HARD) responses from a first UE for a particular set of sidelink processes over a physical sidelink feedback channel. To indicate multiple sidelink processes, the second UE may indicate, in sidelink control information, a window of sidelink processes. The window may be a sliding window that starts with a starting sidelink process and extends through other sidelink processes. The second UE may transmit data for the sidelink processes in the sliding window and receive feedback for the indicated sidelink processes. In some aspects, the first UE may select, in coordination with the second UE, the sidelink processes for which feedback is to be provided.

公开(公告)号：US11856559B2

公开(公告)日：2023-12-26

申请号：US17248248

申请日：2021-01-15

Applicant: QUALCOMM INCORPORATED

Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei

IPC: H04W52/14 ,  H04W72/044 ,  H04L5/00 ,  H04W72/1268 ,  H04W72/23 ,  H04W74/00 ,  H04W72/21 ,  H04W4/10 ,  H04W76/45

CPC classification number: H04W72/044 ,  H04L5/0055 ,  H04W52/14 ,  H04W72/1268 ,  H04W72/21 ,  H04W72/23 ,  H04W74/004 ,  H04W4/10 ,  H04W76/45

Abstract: Wireless communications systems and methods related to uplink communications with transmission on-off patterns and frequency-hopping in a shared radio frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a plurality of uplink (UL) transmission on-off patterns that are offset from each other in time. The first wireless communication device communicates, with the second wireless communication device in an unlicensed band, a first UL communication signal based on a first UL transmission on-off pattern of the plurality of UL transmission on-off patterns.

公开(公告)号：US11849482B2

公开(公告)日：2023-12-19

申请号：US17017245

申请日：2020-09-10

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue

IPC: H04W74/08 ,  H04W56/00

CPC classification number: H04W74/0808 ,  H04W56/001 ,  H04W74/0891

Abstract: Synchronization of listen before talk (LBT) back-off for synchronous access in unlicensed spectrum is disclosed. For nodes of a coordinated group of nodes, when one or more such nodes detects a failed LBT attempt, it pauses the contention widow countdown at the current counter value. According to such aspects, a procedure may be provided that specifies when such nodes can restart the contention window countdown using the current counter value or when the nodes can redraw the pseudo-random number for the contention window countdown in order to synchronize the contention window counters.

公开(公告)号：US11849456B2

公开(公告)日：2023-12-19

申请号：US17936936

申请日：2022-09-30

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Wanshi Chen ,  Yi Huang ,  Yisheng Xue ,  Seyong Park ,  Linhai He

IPC: H04W72/21 ,  H04L1/00 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/044 ,  H04W74/08 ,  H04W72/23 ,  H04W72/53 ,  H04W72/232

CPC classification number: H04W72/21 ,  H04L1/0061 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/0466 ,  H04W72/23 ,  H04W72/53 ,  H04W74/0833 ,  H04W72/232

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine to transmit a compact uplink control information (UCI) that identifies one or more parameters associated with a transmission of a physical uplink shared channel (PUSCH) communication in a PUSCH resource unit (PRU). The UE may transmit the UCI in the PRU based at least in part on a semi-static payload construction and resource mapping rule. Numerous other aspects are provided.