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    Narrowband communications in unlicensed frequency band
    252.
    发明授权
    Narrowband communications in unlicensed frequency band 有权

    公开(公告)号：US11611886B2

    公开(公告)日：2023-03-21

    申请号：US17001511

    申请日：2020-08-24

    Applicant: QUALCOMM Incorporated

    Inventor： Chih-Hao Liu ,  Yisheng Xue ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian

    IPC: H04W16/14 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/04 ,  H04W74/08

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for narrowband communications using frequency hopping in an unlicensed frequency band. In some aspects, a base station (BS) and a user equipment (UE) may communicate with one another over a sequence of unique frequency sub-bands of a frequency hopping pattern. In some instances, the BS and the UE may switch from a current frequency sub-band to another frequency sub-band based on a number of unsuccessful attempts to gain access to the current frequency sub-band. In some other instances, the BS and the UE may communicate data using configured grant (CG) resources based on a number of unsuccessful attempts to gain access to the current frequency sub-band.

    SIDELINK FEEDBACK TECHNIQUES IN SIDELINK WIRELESS COMMUNICATIONS
    253.
    发明申请
    SIDELINK FEEDBACK TECHNIQUES IN SIDELINK WIRELESS COMMUNICATIONS 有权

    公开(公告)号：US20230057841A1

    公开(公告)日：2023-02-23

    申请号：US17408302

    申请日：2021-08-20

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W72/04

    Abstract: Methods, systems, and devices for wireless communications are described in which a first user equipment (UE) may transmit sidelink communications to a second UE, and the second UE may provide feedback associated with the sidelink communication to the first UE in a sidelink control information (SCI) transmission. In some cases, the SCI is first stage SCI transmitted in a sidelink control channel or second stage SCI transmitted in a sidelink shared channel. The feedback may include one or more of acknowledgment/negative-acknowledgment feedback, channel state information feedback, a scheduling request, or any combinations thereof. In some cases, the first UE may indicate resources of the second slot to the second UE for transmission of the feedback in the SCI, such as by providing a time offset value and resource index that identifies the resources.

    TECHNIQUES FOR LOW-LATENCY SIDELINK FEEDBACK TRANSMISSION
    254.
    发明申请
    TECHNIQUES FOR LOW-LATENCY SIDELINK FEEDBACK TRANSMISSION 有权

    公开(公告)号：US20230056249A1

    公开(公告)日：2023-02-23

    申请号：US17407857

    申请日：2021-08-20

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W72/04 ,  H04L27/26

    Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may receive control signaling indicating multiple sidelink channels of a sidelink resource pool, a mapping between each sidelink channel of the multiple sidelink channels to a corresponding feedback channel of multiple feedback channels, and a time gap between sidelink channel transmission and feedback transmission with respect to a feedback channel sub-slot of multiple feedback channel sub-slots within a slot. Accordingly, the first wireless device may receive a sidelink data message on a first sidelink channel of the multiple sidelink channels and may transmit sidelink feedback information for the sidelink data message in the feedback channel sub-slot of the slot on a first feedback channel of the multiple feedback channels corresponding to the first sidelink channel. The described techniques may enable the first wireless device to transmit the sidelink feedback information with reduced latency and improved reliability.

    CONFIGURED GRANT USING POLYNOMIAL OVER GALOIS FIELD
    257.
    发明申请
    CONFIGURED GRANT USING POLYNOMIAL OVER GALOIS FIELD 有权

    公开(公告)号：US20230026028A1

    公开(公告)日：2023-01-26

    申请号：US17377205

    申请日：2021-07-15

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W72/12 ,  H04W72/14

    Abstract: This disclosure provides systems, methods, and devices for wireless communication that support managing allocation of configured grant (CG) resources for uplink transmissions using a polynomial over Galois field in a wireless communication system. In particular, a user equipment (UE) may be configured (e.g., by a base station) to determine a resource to access, from a resource pool configured for each CG occasion of a CG configuration, based on a polynomial over Galois field configured for the UE. The polynomial over Galois field may include a parameter p, and the UE may be configured with a mapping that maps the absolute time (e.g., a slot index or a symbol index) of a GC occasion to an index between 0 and p−1 that is used as input to the polynomial The result of the polynomial is used to determine the resource to access by the UE at the CG occasion.

    CROSS-SUBBAND POWER RESERVATION SIGNAL
    258.
    发明申请
    CROSS-SUBBAND POWER RESERVATION SIGNAL 有权

    公开(公告)号：US20230020766A1

    公开(公告)日：2023-01-19

    申请号：US17374814

    申请日：2021-07-13

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W72/04

    Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) may receive, from a second UE, a control message that indicates a duration of time the second UE has reserved at least a first subchannel of a first subband of a set of shared spectrum subbands. The duration of time may include a quantity of time periods. The first UE may transmit, during a time period of the quantity of time periods and in a second subchannel of the first subband, a power reservation signal that indicates a transmission power associated with the first UE beginning transmission to a third UE in a second subband of the set of shared spectrum subbands and partway through the time period. The first UE may transmit signaling to the third UE in the second subband partway through the time period and after transmitting the power reservation signal.

    TECHNIQUES FOR SIDELINK POWER CONTROL AND BETA OFFSET UPDATES OVER SHORTENED PHYSICAL SIDELINK SHARED CHANNEL-BASED MINI-SLOTS
    259.
    发明申请
    TECHNIQUES FOR SIDELINK POWER CONTROL AND BETA OFFSET UPDATES OVER SHORTENED PHYSICAL SIDELINK SHARED CHANNEL-BASED MINI-SLOTS 有权

    公开(公告)号：US20220417947A1

    公开(公告)日：2022-12-29

    申请号：US17357222

    申请日：2021-06-24

    Applicant: QUALCOMM Incorporated

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

    IPC: H04W72/12 ,  H04W72/04

    Abstract: This disclosure provides systems, methods and apparatus for partitioning a physical sidelink shared channel (PSSCH) into multiple shortened PSSCHs (sPSSCHs) within a slot and selecting a transmit power for each sPSSCH. In one aspect, a transmitting user equipment (UE) may select the transmit power for each sPSSCH in accordance with an open loop power control operation. In some examples, the transmitting UE may select a common transmit power for each sPSSCH. Alternatively, the transmitting UE may perform independent power control operations for each sPSSCH and may cap variation in transmit power across sPSSCHs as a result of employing lower and upper bound transmit powers. Additionally, or alternatively, the transmitting UE may provide a default beta offset for the set of receiving UEs via sidelink control information (SCI) part one (SCI-1) and may provide beta offset updates via each SCI part two (SCI-2) transmission in the multiple sPSSCHs.

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