公开(公告)号：US20230095560A1

公开(公告)日：2023-03-30

申请号：US17905014

申请日：2021-04-23

Applicant: QUALCOMM Incorporated

Inventor： Stelios STEFANATOS ,  Shuanshuan WU ,  Arthur GUBESKYS

IPC: H04W74/08 ,  H04W56/00

Abstract: Certain aspects of the present disclosure provide techniques for sidelink communications in an unlicensed spectrum. A method that may be performed by a device includes sensing a channel for interference in each of a plurality of time intervals in order of time until interference below a threshold is sensed for one of the plurality of time intervals or interference above the threshold is sensed for all of the plurality of time intervals, the plurality of time intervals being of a time window. The method may also include sensing interference to be above a threshold in a first portion of the one of the plurality of time intervals. The method may also include sensing interference to be below the threshold in a second portion of the one of the plurality of time intervals that occurs later in time than the first portion.

公开(公告)号：US20240393425A1

公开(公告)日：2024-11-28

申请号：US18698729

申请日：2022-11-18

Applicant: QUALCOMM Incorporated

Inventor： Stelios STEFANATOS ,  Anantharaman BALASUBRAMANIAN ,  Kapil GULATI

IPC: G01S7/02 ,  G01S13/931

Abstract: Methods, systems, and devices for wireless communications are described. Aspects of the disclosure provide techniques for wireless devices utilizing wireless communications systems to perform radar operations to leverage challenges within radar signaling to detect one or more adverse parties attempting to spoof one or more radar signals. For example, a base station may transmit, to one or more vehicles, a message including an indication of a challenge type, when the challenge is to be applied, or both. Based on the challenge, one or more vehicles may detect that a device associated with the adverse party is not following the challenge as dictated in the message. Based on the detection, the one or more vehicles may report, to the base station, the detection of an adverse party attempting to spoof radars within the wireless communications system.

公开(公告)号：US20230389076A1

公开(公告)日：2023-11-30

申请号：US18031562

申请日：2021-12-02

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Xiaoxia ZHANG ,  Stelios STEFANATOS ,  Parisa CHERAGHI ,  Arthur GUBESKYS ,  Tao LUO ,  Jing SUN ,  Peter GAAL

IPC: H04W74/08

CPC classification number: H04W74/0816 ,  H04W74/0866

Abstract: Techniques for cross channel occupancy time (COT) hybrid automatic repeat request (HARQ) feedback transmission for sidelink communication in unlicensed spectrum may be performed. In an example, a receiving user equipment (UE) may receive, from a transmitting UE, a first transmission in a first channel occupancy time (COT). The receiving UE may also determine a first feedback occasion is after a last slot of the first COT. The receiving UE may also determine one or more feedback configurations. The receiving UE may also transmit, to the transmitting UE, a feedback message indicating decoding of the first transmission in the first feedback occasion or a second feedback occasion based on the one or more feedback configurations.

公开(公告)号：US20230389053A1

公开(公告)日：2023-11-30

申请号：US18249534

申请日：2021-12-09

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Stelios STEFANATOS ,  Arthur GUBESKYS ,  Parisa CHERAGHI

IPC: H04W72/40 ,  H04L5/00 ,  H04W16/14 ,  H04W72/0453

CPC classification number: H04W72/40 ,  H04L5/001 ,  H04W16/14 ,  H04W72/0453

Abstract: Methods, systems, and devices for wireless communication are described to support selection of an unoccupied sidelink resource associated with a higher communication quality in a shared spectrum. User equipments (UEs) operating in shared spectrum may be configured with a set of candidate carriers for sidelink communications using the shared spectrum. A transmitting UE may select a number of resources for a sidelink transmission that are available in a same transmission time occasion and on multiple carriers of the set of carriers. The UE may perform a channel access procedure for each carrier of the multiple carriers prior to the transmission time occasion and may transmit a sidelink communication on at least one selected resource if the channel access procedure succeeds in at least one of the carriers of the multiple carriers.

公开(公告)号：US20230388947A1

公开(公告)日：2023-11-30

申请号：US18067482

申请日：2022-12-16

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao LIU ,  Yisheng XUE ,  Jing SUN ,  Giovanni CHISCI ,  Stelios STEFANATOS ,  Xiaoxia ZHANG

IPC: H04W56/00 ,  H04W72/02 ,  H04W72/0446

CPC classification number: H04W56/001 ,  H04W72/02 ,  H04W72/0446

Abstract: Methods, systems, and devices for wireless communications are described. A wireless communication device may receive a configuration indicating SL synchronization communication resources occupying a first portion of a shared frequency band. The wireless communication device may transmit one or more SL synchronization communications occupying a second portion of the shared frequency band, where the second portion of the shared frequency band is larger than the first portion and includes the first portion.

公开(公告)号：US20230328777A1

公开(公告)日：2023-10-12

申请号：US18027050

申请日：2021-11-03

Applicant: QUALCOMM Incorporated

Inventor： Stelios STEFANATOS ,  Shuanshuan WU ,  Arthur GUBESKYS ,  Parisa CHERAGHI

IPC: H04W74/08

CPC classification number: H04W74/0808 ,  H04W92/18

Abstract: To facilitate efficient LBT sidelink sensing procedures, methods, apparatuses, and computer program products are provided. An example method of a sidelink wireless device includes initiating an LBT sidelink sensing procedure including initiating an LBT timer to run for at least a minimum sensing duration in a channel. The example method further includes detecting one or more signals in the channel during the LBT side link sensing procedure. The example method further includes allowing the LBT timer to continue to run.

公开(公告)号：US20230292360A1

公开(公告)日：2023-09-14

申请号：US18017316

申请日：2021-09-28

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Arthur GUBESKYS ,  Juan MONTOJO ,  Stelios STEFANATOS ,  Parisa CHERAGHI

IPC: H04W74/00 ,  H04L1/1829 ,  H04W72/0446

CPC classification number: H04W74/002 ,  H04L1/1854 ,  H04L1/1861 ,  H04W72/0446

Abstract: Channel access for sidelink hybrid automatic repeat request (HARQ) feedback transmission in unlicensed spectrum may be performed. A receiving UE may receive a first transmission from a transmitting UE, and, upon reception of a second transmission from the transmitting UE, may transmit a HARQ feedback transmission to the transmitting UE to indicate decoding of the first transmission. Techniques described herein allow coordination between the receiving UE and the transmitting UE for consistent HARQ feedback in the unlicensed spectrum.

公开(公告)号：US20230239902A1

公开(公告)日：2023-07-27

申请号：US18002643

申请日：2021-08-13

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Stelios STEFANATOS ,  Parisa CHERAGHI ,  Arthur GUBESKYS

IPC: H04W72/40 ,  H04W74/00

CPC classification number: H04W72/40 ,  H04W74/002 ,  H04W92/16

Abstract: A user equipment (UE) communicates on a shared channel using sidelink transmissions. The UE determines a channel access priority for the sidelink transmission based on a channel access priority for the UE, a channel access priority associated with a packet priority of the sidelink transmission, a congestion level for the channel, or a remaining time in a packet delay budget of the sidelink transmission. The UE performs a channel access procedure based on the channel access priority for the sidelink transmission to assess that the channel is clear prior to transmitting the sidelink transmission, and transmits the sidelink transmission on the channel.

公开(公告)号：US20230232448A1

公开(公告)日：2023-07-20

申请号：US17996587

申请日：2021-06-23

Applicant: QUALCOMM Incorporated

Inventor： Stelios STEFANATOS ,  Arthur GUBESKYS ,  Shuanshuan WU ,  Kapil GULATI

IPC: H04W74/08 ,  H04W72/25 ,  H04W72/0453 ,  H04W8/00 ,  H04W74/00

CPC classification number: H04W74/0808 ,  H04W72/25 ,  H04W72/0453 ,  H04W8/005 ,  H04W74/002

Abstract: Certain aspects of the present disclosure provide techniques for sidelink communications in an unlicensed spectrum. A method that may be performed by a user equipment (UE) and a base station (BS) includes sensing, prior to a start of a time window, a frequency band to determine whether the frequency band is idle, the time window divided in time into a plurality of time periods, the frequency band divided in time across multiple of the plurality of time periods into a corresponding plurality of resources comprising one or more unassigned resources and one or more assigned resources assigned to one or more other wireless communication devices for wireless communication.

公开(公告)号：US20230209601A1

公开(公告)日：2023-06-29

申请号：US17996503

申请日：2020-12-28

Applicant: QUALCOMM Incorporated

Inventor： Stelios STEFANATOS ,  Arthur GUBESKYS ,  Shuanshuan WU

IPC: H04W74/08 ,  H04W16/14

CPC classification number: H04W74/0816 ,  H04W16/14

Abstract: Certain aspects of the present disclosure provide techniques for sidelink communications in an unlicensed spectrum. A method that may be performed by a user equipment (UE) includes measuring, starting at least at a start time of a time interval, a frequency band to determine whether the frequency band is idle, the time interval including a plurality of time periods. While measuring the frequency band, decoding, by the UE, any signals received on the frequency band to determine if a clear-to-send (CTS) signal is received over the frequency band.