公开(公告)号：US20220256591A1

公开(公告)日：2022-08-11

申请号：US17174162

申请日：2021-02-11

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Junyi Li ,  Piyush Gupta

IPC: H04W74/00 ,  H04W74/08 ,  H04W72/02 ,  H04W72/12 ,  H04W72/04 ,  H04W8/24

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may belong to a group of UEs and may identify a channel sensing schedule for the group of UEs. The channel sensing schedule may include sensing windows and resource reservation windows corresponding to each UE of the group of UEs. The channel sensing schedule may establish a pattern for the sensing windows and resource reservation windows such that the UEs may take turns performing sensing and resource selection. During a sensing window associated with the UE, the UE may sense a set of resources of a sidelink communication link to identify candidate resources. The UE may transmit, to the other UEs of the group, a message indicating results of the sensing, such as an indication of resource reservations, candidate resources, or the like. The other UEs may identify and select candidate resources based on the message.

公开(公告)号：US20220256403A1

公开(公告)日：2022-08-11

申请号：US17172963

申请日：2021-02-10

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Hua Wang ,  Sony Akkarakaran ,  Jing Sun ,  Juan Montojo ,  Junyi Li ,  Xiaoxia Zhang ,  Piyush Gupta ,  Tao Luo

IPC: H04W28/26 ,  H04W72/04

Abstract: Systems, apparatus, methods, and computer-readable media that enable and support backward cancellation indication for sidelink transmissions are described. In a situation where a sidelink data transmission with respect to one or more resources previously reserved for sidelink communication is ineffectual, a sidelink transmission user equipment (UE) may indicate the ineffectual data transmission in a transmission opportunity subsequent to the transmission having an ineffectual data transmission, such as by transmitting a backward cancellation indication (BCI). The BCI may provide information to a corresponding sidelink receiver UE regarding the resource with respect to the ineffectual data transmission. The sidelink receiver UE may use information provided by the BCI in determining whether to alter utilization of signals received on resources of the ineffectual data transmission. Other aspects and features are also claimed and described.

公开(公告)号：US20220225278A1

公开(公告)日：2022-07-14

申请号：US17147036

申请日：2021-01-12

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Jing Sun ,  Piyush Gupta ,  Xiaoxia Zhang

IPC: H04W72/02 ,  H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may determine that the first UE is to receive a sidelink transmission from a second UE, the sidelink transmission comprising a sidelink control channel and a sidelink data channel. The first UE may receive, based at least in part on a first resource configuration for a sidelink feedback channel failing to satisfy a resource threshold associated with transmitting a feedback message, an indication of a second resource configuration from the second UE, the second resource configuration for transmitting the feedback message to the second UE for the sidelink transmission, the second resource configuration satisfying the resource threshold. The first UE may receive the sidelink transmission from the second UE. The first UE may transmit, to the second UE, the feedback message using the second resource configuration.

公开(公告)号：US11368919B2

公开(公告)日：2022-06-21

申请号：US17019947

申请日：2020-09-14

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Junyi Li ,  Christophe Chevallier

IPC: H04W52/14 ,  H04W72/12 ,  H04W72/04 ,  H04W52/48 ,  H04L1/16 ,  H04L5/00 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. Techniques for multiple transmission reception points (TRPs) in a cluster may coordinate scheduling and communications with a user equipment (UE). Different TRPs may allocate uplink resources for one or more UEs within a coordinated cluster to transmit feedback information. A first TRP may provide a first set of resources that one or more associated UEs may use to transmit acknowledgment (ACK) feedback to indicate successful receipt of a downlink transmission of the first TRP, and one or more other TRPs of the coordinated cluster may provide a second set of resources that the one or more UEs may use to transmit negative acknowledgment (NACK) feedback to indicate that a downlink transmission of the first TRP was lost. The second set of resources may include non-orthogonal multiple access (NOMA) resources.

公开(公告)号：US20220191718A1

公开(公告)日：2022-06-16

申请号：US17124099

申请日：2020-12-16

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Jing Sun ,  Piyush Gupta

IPC: H04W24/08 ,  H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04W24/10 ,  H04B17/336

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a first user equipment (UE) may monitor and perform blind decoding for a sidelink transmission, such as a first part of sidelink control information (SCI), from a second UE over a configured search space. The first UE may receive signaling indicating an update to the search space via lower layer signaling, such as via a second part of SCI or a sidelink data channel, and may monitor for the sidelink transmission over the updated search space. The update to the search space may indicate a blocking of one or more monitoring occasions from the configured search space, an addition of one or more monitoring occasions to the configured search space, a reactivation of one or more previously blocked monitoring occasions, or a switching from a first search space to a second search space.

公开(公告)号：US20220174690A1

公开(公告)日：2022-06-02

申请号：US17110184

申请日：2020-12-02

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Yisheng Xue ,  Jing Sun ,  Junyi Li ,  Piyush Gupta ,  Xiaoxia Zhang ,  Ozcan Ozturk

IPC: H04W72/12

Abstract: Methods, systems, and devices for wireless communications are described to support half-duplex-aware resource selection in sidelink. A physical (PHY) layer at a user equipment (UE) may report available resources to a medium access control (MAC) layer excluding some resources on which the UE is scheduled to receive or other UEs are scheduled to transmit. Specifically, the PHY layer may exclude resources on which the UE is scheduled to receive from a set of resources available for a sidelink transmission from the UE. Similarly, the PHY layer at the UE may exclude resources on which other UEs are scheduled to transmit from a set of resources available for a sidelink transmission to those UEs. A MAC layer at the UE may indicate to the PHY layer (e.g., directly or indirectly) the resources to be excluded when reporting available resources.

公开(公告)号：US20220167311A1

公开(公告)日：2022-05-26

申请号：US17247066

申请日：2020-11-25

Applicant: QUALCOMM INCORPORATED

Inventor： Yisheng Xue ,  Jing Sun ,  Xiaoxia Zhang ,  Peter Gaal ,  Juan Montojo ,  Ozcan Ozturk ,  Sony Akkarakaran ,  Chih-Hao Liu ,  Piyush Gupta ,  Rajat Prakash

IPC: H04W72/02 ,  H04W72/08 ,  H04W72/04 ,  H04W28/02

Abstract: Wireless communications systems and methods related to channel congestion estimations based on virtual collision metrics are provided. A user equipment (UE) may select a plurality of resources from a sidelink resource pool. The UE may request an evaluation of an availability of the plurality of resources and may receive an indication of the availability of the plurality of resources. The UE may further transmit, based on a virtual collision metric associated with the indication of the availability of the plurality of resources, a first sidelink transmission.

公开(公告)号：US20220116928A1

公开(公告)日：2022-04-14

申请号：US17495387

申请日：2021-10-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaojie Wang ,  Piyush Gupta ,  Lik Hang Silas Fong

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may transmit a first sidelink control information (SCI) message associated with a sidelink transmission from the first UE, the first SCI message including a first indication of a set of resources reserved for retransmissions of the sidelink transmission at one or more retransmission occasions. The first UE may identify a second SCI message associated with the first SCI message, the second SCI message including one or more time domain resource allocation (TDRA) field values indicative of at least a first subset of the set of resources and a release of the at least first subset of the set of resources reserved for the retransmissions of the sidelink transmission, the release pertaining to at least one retransmission occasion of the one or more retransmission occasions. The first UE may then transmit fewer retransmissions of the sidelink transmission in accordance with the release.

公开(公告)号：US11284316B2

公开(公告)日：2022-03-22

申请号：US16264423

申请日：2019-01-31

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li ,  Piyush Gupta

IPC: H04B7/024 ,  H04W16/24 ,  H04W24/10 ,  H04W36/00 ,  H04B17/309 ,  H04W36/08 ,  H04L5/00 ,  H04B7/06 ,  H04B7/022

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a group of transmission reception points (TRPs) in a coordinated multi-point (CoMP) system. The UE may transmit information associated with measurements between the UE and a TRP of the group of TRPs. The UE may receive, based at least in part on transmitting the information associated with measurements between the UE and the TRP, an indication of resources for a first CoMP cluster of the CoMP system. The UE may communicate with the TRP via a resource pool of the TRP based at least in part on the indication of resources.

公开(公告)号：US11282260B2

公开(公告)日：2022-03-22

申请号：US16896955

申请日：2020-06-09

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Geetika Malhotra ,  Pavan Kumar Akkaraju

IPC: G06T15/06 ,  G06T17/00 ,  G06T15/08

Abstract: A method is presented. The method includes organizing a scene as a number of bounding volumes in a hierarchical data structure. The method also includes generating a grid based on the hierarchical data structure. The method further includes mapping each node of the hierarchical data structure to at least one cell of the grid. The method additionally includes identifying a cell of the grid corresponding to an initial intersection location of a ray and the scene. The method still further includes determining a non-root node of the hierarchical data structure as a start node for traversing the hierarchical data structure based on the identified cell. The method also includes traversing the hierarchical data structure starting from the start node to identify a number a primitives intersected by the ray.