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：US20230269007A1

公开(公告)日：2023-08-24

申请号：US17652269

申请日：2022-02-23

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Junyi LI ,  Kapil GULATI

IPC: H04B15/00

CPC classification number: H04B15/00 ,  H04W92/18

Abstract: Method and apparatus for sidelink assisted interference cancellation. The apparatus receives a set of uplink transmission parameters of a second UE in a neighbor cell. The apparatus performs interference cancellation of an uplink transmission of the second UE on a downlink transmission received from a serving cell. The interference cancellation based at least on the set of uplink transmission parameters of the second UE. The apparatus may provide, to a base station, an indication indicating support for the interference cancellation. The apparatus may indicate, to the base station, a type of interference cancellation operation to be performed by the first UE.

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.

公开(公告)号：US20230189336A1

公开(公告)日：2023-06-15

申请号：US17999350

申请日：2021-07-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: Certain aspects of the present disclosure provide techniques for subchannel-based listen before talk (LBT). An example method that may be performed by a user equipment (UE) includes receiving one or more transmissions indicating one or more allocated subchannels of a frequency band that are allocated during a first time period, the frequency band comprising the one or more allocated subchannels and one or more unallocated subchannels during the first time period; sensing the one or more unallocated subchannels for at least a portion of the first time period prior to a second time period; and transmitting a signal within the frequency band during the second time period based on energy sensed for the one or more unallocated subchannels being less than a threshold.

公开(公告)号：US20230180239A1

公开(公告)日：2023-06-08

申请号：US18069592

申请日：2022-12-21

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Kapil GULATI ,  Tien Viet NGUYEN ,  Shuanshuan WU ,  Sudhir Kumar BAGHEL

IPC: H04W72/20 ,  H04B17/318

CPC classification number: H04W72/20 ,  H04B17/318

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first wireless communication device may receive, on a sidelink and from a second wireless communication device, resource reservation information associated with the second wireless communication device. The resource reservation information may identify sidelink resources that are reserved for the second wireless communication device for transmission on the sidelink. The first wireless communication device may transmit, on the sidelink, the resource reservation information to a third wireless communication device. Numerous other aspects are provided.

公开(公告)号：US20230180206A1

公开(公告)日：2023-06-08

申请号：US17643122

申请日：2021-12-07

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Anantharaman BALASUBRAMANIAN ,  Junyi LI ,  Hong CHENG ,  Kapil GULATI

IPC: H04W72/04 ,  H04L1/00

CPC classification number: H04W72/0466 ,  H04W72/0406 ,  H04L1/0061

Abstract: Apparatus, methods, and computer-readable media for facilitating scrambling of sidelink control information for sidelink communication are disclosed herein. The scrambling of the SCI may include scrambling CRC, scrambling information bits, and/or scrambling channel bits. An example method for wireless communication at a user equipment UE includes scrambling at least a portion of SCI. The example method also includes transmitting the SCI carrying control information for a sidelink transmission. In another aspect, an example method for wireless communication at a UE includes receiving SCI having scrambled bits. The example method also includes decoding the SCI based on information known to the UE.

公开(公告)号：US20230180188A1

公开(公告)日：2023-06-08

申请号：US17997358

申请日：2021-05-27

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Arthur GUBESKYS ,  Shailesh PATIL ,  Gene Wesley MARSH ,  Stelios STEFANATOS

IPC: H04W72/02 ,  H04W72/0453 ,  H04W74/08

CPC classification number: H04W72/02 ,  H04W72/0453 ,  H04W74/0816

Abstract: Methods, systems, and devices for wireless communications are described to reduce interference caused by power leakage. A first user equipment (UE) or a base station may select communication resources for a sidelink communication based on a distance between UEs reserving frequency resources in a same time window. The first UE or the base station may determine a distance parameter between the first UE and one or more other UEs (e.g., including a second UE) reserving frequency resources within the time window. The distance parameter may represent a physical distance between the first and second UEs or a reference signal received power of the second UE as received by the first UE. The first UE or the base station may select communication resources based on whether the distance parameter is below a threshold, and the first UE may communicate the sidelink communication using the selected resources.

公开(公告)号：US20230171737A1

公开(公告)日：2023-06-01

申请号：US17456852

申请日：2021-11-29

Applicant: QUALCOMM Incorporated

Inventor： Shuanshuan WU ,  Qing LI ,  Tien Viet NGUYEN ,  Sourjya DUTTA ,  Kapil GULATI ,  Gabi SARKIS

IPC: H04W72/02 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W72/02 ,  H04W72/0453 ,  H04W72/0406 ,  H04W72/1263

Abstract: A transmitting user equipment (UE) may perform resource hopping for a periodic sidelink resource reservation by scheduling a plurality of periodic sidelink resources with a first periodicity, the plurality of periodic sidelink resources being shifted at a first offset in a frequency domain. The transmitting UE may reduce persistent collisions of periodic or semi-persistent scheduling (SPS) reservation of the sidelink resources with another UE. The transmitting UE may transmit, to a receiving UE, sidelink control information (SCI) indicating the first offset and the plurality of sidelink transmissions via the plurality of periodic sidelink resources at the first periodicity based on the SCI. The receiving UE may receive, from the transmitting UE, the SCI and the plurality of sidelink transmissions via the plurality of periodic sidelink resources at the first periodicity based on the SCI.