公开(公告)号：US12041657B2

公开(公告)日：2024-07-16

申请号：US17665270

申请日：2022-02-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04W72/0446 ,  H04W74/00 ,  H04W74/08 ,  H04W74/0816

CPC classification number: H04W74/0816 ,  H04W72/0446 ,  H04W74/006 ,  H04W74/0866

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a first downlink control information (DCI) message indicating a first listen-before-talk (LBT) grant for accessing a sidelink channel, the first DCI being associated with a first search space of the UE. The UE may then receive a second DCI message indicating a second LBT grant for accessing the channel or an uplink channel, the second DCI being associated with a second search space of the UE and including an activation trigger for the first LBT grant of the first DCI. The UE may then perform a first LBT procedure to access the sidelink channel in accordance with the first LBT grant during a first channel occupancy time (COT). The UE may further perform a second LBT procedure to access the uplink channel during the first COT.

公开(公告)号：US12041599B2

公开(公告)日：2024-07-16

申请号：US18059031

申请日：2022-11-28

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04L1/18 ,  H04W72/1263 ,  H04W72/23 ,  H04W92/18 ,  H04L1/1812

CPC classification number: H04W72/12 ,  H04W72/1263 ,  H04W72/23 ,  H04L1/1812 ,  H04W92/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, on an access link from a base station, a first downlink control information (DCI) that schedules a first communication on a physical sidelink shared channel (PSSCH) and a second DCI that schedules a second communication on the PSSCH. The first communication and the second communication may be scheduled according to a rule for overlapping or ordering communications on the PSSCH that are associated with one or more hybrid automatic repeat request identifiers. The UE may transmit the first communication and the second communication as scheduled. Numerous other aspects are described.

公开(公告)号：US12028896B2

公开(公告)日：2024-07-02

申请号：US17445306

申请日：2021-08-17

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/04 ,  H04W16/14 ,  H04W92/18

CPC classification number: H04W74/04 ,  H04W16/14 ,  H04W92/18

Abstract: Wireless communications systems and methods related to multiple starting points for new radio sidelink transmission over unlicensed band are provided. In some aspects, a UE may perform a channel access procedure to access a first physical sidelink shared channel (PSSCH) transmission resource of an unlicensed new radio spectrum. In some aspects, the first PSSCH transmission resource may be reserved by a control message and may include a plurality of transmission starting points. Further, the first UE may transmit first data to a second UE via the first PSSCH transmission resource starting at a later transmission starting point than one or more prior transmission starting points of the plurality of transmission starting points when the performing the channel access procedure fails at each of the one or more prior transmission starting points.

公开(公告)号：US12016065B2

公开(公告)日：2024-06-18

申请号：US17454858

申请日：2021-11-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W76/14 ,  H04L1/00 ,  H04L5/00 ,  H04W56/00 ,  H04W72/20

CPC classification number: H04W76/14 ,  H04L1/0026 ,  H04L5/0048 ,  H04W56/001 ,  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 establishing, with a second sidelink UE, a beamformed link, transmitting, to the second sidelink UE, a periodic discovery and measurement timing (DMTC) configuration via the beamformed link, and transmitting, to the second sidelink UE, a periodic beacon signal based on the DMTC configuration.

公开(公告)号：US12010620B2

公开(公告)日：2024-06-11

申请号：US17443236

申请日：2021-07-22

Applicant: QUALCOMM Incorporated

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

IPC: H04W52/02

CPC classification number: H04W52/0229

Abstract: Wireless communications systems and methods related to power saving over a forward link of a star topology of user equipment (UE) are provided. In some aspects, a first UE may monitor the forward link connecting a second UE to the first UE for a control message transmitted by the second UE to the first UE. The first UE may then establish an operational mode based on the result of the monitoring for the control message, such as but not limited to a power saving mode or an active mode.

公开(公告)号：US20240155622A1

公开(公告)日：2024-05-09

申请号：US18053473

申请日：2022-11-08

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Xiaoxia Zhang ,  Jing Sun ,  Giovanni Chisci

IPC: H04W72/14 ,  H04L1/18 ,  H04W74/08

CPC classification number: H04W72/14 ,  H04L1/1816 ,  H04L1/1848 ,  H04L1/1854 ,  H04W74/0808

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, while operating in a discontinuous reception mode, a grant scheduling a sidelink data message for the UE over a shared radio frequency spectrum band, the grant indicating a set of feedback channel occasions associated with the sidelink data message. The UE may transmit at least one feedback message indicating a feedback status of the sidelink data message during at least one feedback channel occasion of the set of feedback channel occasions. The UE may initiate, based at least in part on the at least one feedback channel occasion, a round-trip timer associated with the at least one feedback message during which the UE suppresses monitoring for a retransmission of the sidelink data message.

公开(公告)号：US11979906B2

公开(公告)日：2024-05-07

申请号：US17446283

申请日：2021-08-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/00 ,  H04B17/318 ,  H04W72/56 ,  H04W74/0808

CPC classification number: H04W74/0808 ,  H04B17/318 ,  H04W72/56

Abstract: In one aspect, a method of wireless communication includes transmitting, by a user equipment (UE), a first transmission in a first Channel Occupancy Time (COT) for a NR-U sidelink channel. The method also includes reserving, by the UE, a resource in a non-shared portion of a second COT and performing, by the UE, a Listen-Before-Talk (LBT) Category (CAT) 4 operation at a start of the second COT, wherein the second COT is associated with the UE. The method includes performing, by the UE, a continuous transmission operation in the second COT based on successfully performing the LBT CAT 4 operation. The method further includes transmitting, by the UE, a second transmission in the reserved resource of the non-shared portion of the second COT based on successfully performing a second LBT CAT 1 or 2 operation. Other aspects and features are also claimed and described.

公开(公告)号：US11916633B2

公开(公告)日：2024-02-27

申请号：US17339095

申请日：2021-06-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W4/00 ,  H04B7/0456 ,  H04B7/06 ,  H04W80/02 ,  H04W92/18

CPC classification number: H04B7/0626 ,  H04B7/0456 ,  H04W80/02 ,  H04W92/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to another UE, a sidelink channel state information reference signal (S-CSI-RS) and an indication associated with triggering a non-codebook based precoded S-CSI-RS. The UE may receive, from the other UE, the non-codebook based precoded S-CSI-RS. The UE may transmit, to the other UE, a non-codebook based channel state information (CSI) report medium access control (MAC) control element (MAC-CE) that includes an indication of one or more selected precoding beams based at least in part on the non-codebook based precoded S-CSI-RS. Numerous other aspects are described.

公开(公告)号：US20240064799A1

公开(公告)日：2024-02-22

申请号：US17889344

申请日：2022-08-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04W56/00

CPC classification number: H04W74/0808 ,  H04W16/14 ,  H04W72/0406 ,  H04W56/001

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for sidelink control signaling using unlicensed spectrum. Wireless devices may perform a listen-before-talk (LBT) procedure before accessing a channel of the unlicensed spectrum, and may be unable to access the unlicensed spectrum in some circumstances. In some implementations, a wireless device may leverage resources available for transmitting a sidelink synchronization signal block (S-SSB) for additionally transmitting control signaling. For example, a wireless device may multiplex (such as frequency domain multiplexing) a control signal with a S-SSB, which may be transmitted in accordance with a relaxed LBT threshold. In some implementations, the control signal may include information such as an indication of LBT failure or an LBT status, or may be used to detect a radio link failure (RLF), or may be used the short control signal to synchronize sidelink clusters, among other examples.

公开(公告)号：US11910359B2

公开(公告)日：2024-02-20

申请号：US17484117

申请日：2021-09-24

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Jing Sun ,  Xiaoxia Zhang ,  Junyi Li ,  Piyush Gupta ,  Ozcan Ozturk ,  Tao Luo ,  Peter Gaal

IPC: H04W72/02 ,  H04L1/1867 ,  H04W72/0453 ,  H04W24/08 ,  H04W72/0446 ,  H04W72/20

CPC classification number: H04W72/02 ,  H04L1/1896 ,  H04W24/08 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/20

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit a first sidelink control information (SCI) message during a mini-slot of a control resource pool which is decoupled from a data resource pool for sidelink communications. The first SCI message may indicate a data message to be transmitted on a subchannel of the data resource pool to a second UE, where resources between the control resource pool and the data resource pool are mapped. The UE may receive a feedback message from the second UE for the first SCI message during a second mini-slot of the control resource pool. The feedback message may indicate whether a collision or strong interference was detected for the first SCI message. The UE may determine whether to transmit the data message or retransmit the first SCI message based on the feedback message.