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.

公开(公告)号：US11902934B2

公开(公告)日：2024-02-13

申请号：US17249173

申请日：2021-02-22

Applicant: QUALCOMM INCORPORATED

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

IPC: H04W68/02 ,  H04B1/713 ,  H04W72/23

CPC classification number: H04W68/02 ,  H04B1/713 ,  H04W72/23

Abstract: Wireless communications systems and methods related to performing paging operations in a shared radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) with an improved paging reliability. A first user equipment (UE) determines a frequency hopping pattern for a paging occasion window (POW) in a plurality of frequency subbands within a shared radio frequency band. The first UE monitors for a paging message from a base station (BS) in the POW, where the monitoring includes hopping from at least a first frequency subband of the plurality of frequency subbands to a second frequency subband of the plurality of frequency subbands based on the frequency hopping pattern.

公开(公告)号：US11902801B2

公开(公告)日：2024-02-13

申请号：US17304627

申请日：2021-06-23

Applicant: QUALCOMM INCORPORATED

Inventor： Chih-Hao Liu ,  Jing Sun ,  Xiaoxia Zhang ,  Yisheng Xue ,  Ozcan Ozturk ,  Tao Luo ,  Sony Akkarakaran ,  Juan Montojo

IPC: H04W24/10 ,  H04W16/28 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/20

CPC classification number: H04W16/28 ,  H04L5/0048 ,  H04W24/10 ,  H04W72/0446 ,  H04W72/20

Abstract: Wireless communications systems and methods related to intra-slot transmit beam selection and receive beam selection for sidelink are provided. A first user equipment (UE) transmits, to a second UE over a sidelink, a plurality of beam measurement signals in a plurality of beam directions during a first slot, wherein each beam measurement signal of the plurality of beam measurement signals includes at least one of sidelink control information (SCI) or a channel state information-reference signal (CSI-RS), and wherein the plurality of beam directions includes at least two different beam directions. The first UE receives, from the second UE, an indication of a preferred beam direction of the plurality of beam directions. The first UE transmits, to the second UE over the sidelink, data in the preferred beam direction.

公开(公告)号：US11863315B2

公开(公告)日：2024-01-02

申请号：US16130877

申请日：2018-09-13

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L1/00 ,  H04L5/00 ,  H04W16/14 ,  H04W4/70 ,  H04W72/21

CPC classification number: H04L1/0013 ,  H04L5/0055 ,  H04L5/0064 ,  H04W4/70 ,  H04W16/14 ,  H04W72/21 ,  H04L5/0007 ,  H04L5/0044

Abstract: Some techniques and apparatuses described herein may be used to avoid or reduce collisions between uplink data communications and uplink control communications for an enhanced machine-type communication user equipment (eMTC UE) operating in an unlicensed radio frequency spectrum band. Furthermore, some techniques and apparatuses may avoid such collision while still allowing efficient use of resources, such as by deferring the uplink data communication within a data segment, rate matching an uplink data communication around uplink control resources (e.g., cell-specific uplink control resources and/or UE-specific uplink control resources), puncturing the uplink data communication to avoid the uplink control resources, multiplexing uplink control information on an uplink data channel, and/or the like.

公开(公告)号：US11825475B2

公开(公告)日：2023-11-21

申请号：US17377100

申请日：2021-07-15

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Jing Sun ,  Lik Hang Silas Fong ,  Yisheng Xue ,  Xiaoxia Zhang ,  Jung Ho Ryu

IPC: H04W4/00 ,  H04W72/20 ,  H04W52/52 ,  H04W72/0446

CPC classification number: H04W72/20 ,  H04W52/52 ,  H04W72/0446

Abstract: Wireless communications systems and methods related to communicating information are provided. A method of wireless communication performed by a user equipment (UE) may include mapping a sub-physical sidelink shared channel (sub-PSSCH), sidelink control information (SCI), and an automatic gain control (AGC) symbol to a sub-slot of a plurality of sub-slots of a slot and transmitting, to at least one other UE, a transport block via the sub-PSSCH of the sub-slot.

公开(公告)号：US11812474B2

公开(公告)日：2023-11-07

申请号：US17229642

申请日：2021-04-13

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04L5/14 ,  H04W76/14 ,  H04W74/00 ,  H04W74/08 ,  H04W16/14 ,  H04W72/20 ,  H04W72/044

CPC classification number: H04W74/0833 ,  H04W16/14 ,  H04W72/20 ,  H04W74/0808 ,  H04W72/044

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, user equipment (UEs) may communicate over sidelink channels in a shared (e.g., unlicensed) channel bandwidth. A UE may implement sub-channel-based occupancy time sharing for the unlicensed sidelink to improve resource usage. The UE may gain access to the shared channel bandwidth for an occupancy time and may transmit a sharing indicator indicating a portion of resources of the shared channel bandwidth for the occupancy time. The UE may transmit a time-division multiplexing sharing indicator to share a portion of slots of the occupancy time, a frequency-division multiplexing sharing indicator to share a portion of sub-channels of the shared channel bandwidth, or some combination thereof. A UE receiving the sharing indicator may identify the shared resources and may transmit in these shared resources (e.g., without performing a full contention process for an occupancy time).

公开(公告)号：US11805511B2

公开(公告)日：2023-10-31

申请号：US17408148

申请日：2021-08-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/1263 ,  H04L1/00 ,  H04L5/00 ,  H04W72/0446 ,  H04W72/23

CPC classification number: H04W72/1263 ,  H04L1/0004 ,  H04L5/0051 ,  H04W72/0446 ,  H04W72/23

Abstract: This disclosure provides systems, methods, and devices for wireless communication that support cross-slot scheduling of sidelink transmissions in a wireless communication system. A transmitting user equipment (UE) in communication with a receiving UE over a sidelink transmits cross-slot schedule information to the receiving UE at a time prior to a first slot over which a physical sidelink shared channel (PSSCH) transmission is to be transmitted to the receiving UE. The cross-slot schedule information includes information that is sufficient to decode the PSSCH transmission received by the receiving UE at the first slot, without requiring the receiving UE to decode a physical sidelink control channel (PSCCH) transmission including a sidelink control information (SCI) message received during the first slot. In aspects, the PSSCH transmission may be decoded in parallel with the PSCCH transmission received in the first slot.