公开(公告)号：WO2022191961A1

公开(公告)日：2022-09-15

申请号：PCT/US2022/016478

申请日：2022-02-15

Applicant: QUALCOMM INCORPORATED

Inventor： WU, Shuanshuan ,  STEFANATOS, Stelios ,  GUBESKYS, Arthur ,  XU, Huilin

IPC: H04W72/02 ,  H04W72/04 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. To support cross-carrier sidelink resource reservation, a user equipment (UE) may transmit sidelink control signaling in a carrier in a licensed frequency spectrum band (e.g., a licensed carrier) that reserves one or more sidelink resources of a carrier in an unlicensed frequency spectrum band (e.g., an unlicensed carrier) for transmission of sidelink data. For example, the UE may determine the one or more sidelink resources for transmission of the sidelink data in the unlicensed carrier and may transmit the sidelink control signaling in the licensed carrier to reserve the one or more sidelink resources. The UE may then transmit the sidelink data in the one or more sidelink resources of the unlicensed carrier. In some examples, the UE may perform a channel access procedure before transmitting the sidelink data and may transmit the sidelink data based on the channel access procedure.

公开(公告)号：WO2022159828A1

公开(公告)日：2022-07-28

申请号：PCT/US2022/013546

申请日：2022-01-24

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A communication device, such as a user equipment (UE) may determine a transmit diversity configuration indicating a transmit diversity criterion for declaring a result of a channel access procedure for a plurality of component carriers in a shared radio frequency spectrum band. The UE may perform the channel access procedure for the plurality of component carriers in the shared radio frequency spectrum band to determine the result of the channel access procedure based at least in part on the transmit diversity criterion. As a result, the UE may transmit or refrain from transmitting a message over at least one component carrier of the plurality of component carriers based at least in part on the result of the channel access procedure.

公开(公告)号：WO2022126075A1

公开(公告)日：2022-06-16

申请号：PCT/US2021/072710

申请日：2021-12-02

Applicant: QUALCOMM INCORPORATED [US]/[US]

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

IPC: H04L1/18 ,  H04L5/00 ,  H04W74/08 ,  H04W76/14

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：WO2022103637A1

公开(公告)日：2022-05-19

申请号：PCT/US2021/057922

申请日：2021-11-03

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08

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 sidelink sensing procedure. The example method further includes allowing the LBT timer to continue to run.

公开(公告)号：WO2021262897A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038766

申请日：2021-06-23

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L5/00 ,  H04W72/02 ,  H04W76/14 ,  H04L5/0007 ,  H04L5/0044 ,  H04L5/0053

Abstract: Certain aspects of the present disclosure provide techniques for slot format for sidelink communication. A method that may be performed by a user equipment (UE) includes refraining from transmitting during a gap portion of a first symbol in time of a sidelink transmission, wherein the first symbol comprises the gap portion and a signal portion; transmitting a signal during the signal portion of the first symbol; and transmitting a data signal of the sidelink transmission in at least one second symbol subsequent in time to the first symbol in the sidelink transmission.

公开(公告)号：WO2021262577A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/038200

申请日：2021-06-21

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W72/02

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may determine resource selection priority levels associated with available resources for sidelink signaling in an unlicensed radio frequency spectrum band, the resources selection priority levels may be determined based on resource reservation information of the available resources, a time domain location of the available resources, or both. For example, a first resource of the available resources may be associated with a higher priority than a second resource of the available resources in resource selection. The UE may select one or more resources for the sidelink signaling from the available resources based on the resource selection priority levels associated with the available resources. The UE may transmit the sidelink signaling on the unlicensed radio frequency spectrum band using the one or more selected resources.

公开(公告)号：WO2021262390A1

公开(公告)日：2021-12-30

申请号：PCT/US2021/034821

申请日：2021-05-28

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L1/18 ,  H04L1/1861

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may transmit the sidelink message to a second UE via a sidelink communications channel of an unlicensed radio frequency spectrum band. The first UE or the second UE may transmit a reservation signal to retain the sidelink communication channel for corresponding feedback for the sidelink message (e.g., while the second UE generates a feedback transmission). The second UE may transmit the feedback transmission over the sidelink communication channel.

公开(公告)号：WO2021236305A1

公开(公告)日：2021-11-25

申请号：PCT/US2021/029395

申请日：2021-04-27

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W74/08 ,  H04W72/02

Abstract: This disclosure provides systems, methods, and apparatuses, including computer programs encoded on computer storage media, for wireless communication. In one aspect of the disclosure, a method for wireless communication by a user equipment (UE) includes determining that a first frequency resource in an unlicensed channel is reserved in a first slot by a first device. The method may also include transmitting a communication in a second frequency resource in the unlicensed channel in the first slot. Other aspects and features are also claimed and described.

公开(公告)号：WO2021236304A1

公开(公告)日：2021-11-25

申请号：PCT/US2021/029385

申请日：2021-04-27

Applicant: QUALCOMM INCORPORATED

Inventor： STEFANATOS, Stelios ,  RUDER, Michael Alexander ,  PAPALEO, Marco ,  NGUYEN, Tien Viet

IPC: H04W16/14 ,  H04W72/12 ,  H04W88/06

Abstract: Systems, methods, and computer-readable media disclosed herein support coexistence of multiple wireless communication technologies using time division multiplexing with reduced collisions. In some implementations, a method of wireless communication includes detecting arrival of a data packet for transmission at a wireless communication device via a wireless communication channel. The method further includes, based on a determination that the arrival of the data packet is detected during a slot during which transmission of the data packet is forbidden via the wireless communication channel, initiating delayed transmission of the data packet via the wireless communication channel after expiration of a delay interval. Other aspects and features are also claimed and described.

公开(公告)号：WO2021211244A2

公开(公告)日：2021-10-21

申请号：PCT/US2021/022527

申请日：2021-03-16

Applicant: QUALCOMM INCORPORATED

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

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04L5/0007 ,  H04L5/0026 ,  H04L5/0032 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0073 ,  H04L5/0094 ,  H04W72/1215 ,  H04W72/1263 ,  H04W72/1278 ,  H04W88/06 ,  H04W92/18

Abstract: Methods, systems, and devices for wireless communications are described. A UE may support superimposed NR and LTE transmissions using an antenna port, in conjunction with an LTE-aware, NR slot structure (e.g., an NR V2X slot structure). In some aspects, the slot structure may protect portions of the LTE signal from interference, increasing LTE decoder robustness to interference which may provide opportunities for increasing the NR signal power. The UE may transmit a superimposed transmission of an LTE signal and an NR signal from a same antenna port in a same radio frequency resource. In some aspects, the slot structure may be modified so that the UE does not transmit when LTE reference signals are transmitted, so as to avoid interference with the LTE reference signals. A receiving UE may use the LTE reference signals to demodulate the LTE signal and the NR signal from the common time and frequency resources.