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    FRAME BASED OPERATION FOR MILLIMETER WAVE (MMWAVE) WITH RECEIVER BASED CONTENTION
    31.
    发明公开
    FRAME BASED OPERATION FOR MILLIMETER WAVE (MMWAVE) WITH RECEIVER BASED CONTENTION 审中-公开

    公开(公告)号：US20240205927A1

    公开(公告)日：2024-06-20

    申请号：US18538829

    申请日：2023-12-13

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo

    IPC: H04W72/23 ,  H04L5/00 ,  H04W72/044 ,  H04W72/542

    CPC classification number: H04W72/23 ,  H04L5/0048 ,  H04W72/046 ,  H04W72/542 ,  H04W72/044

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for frame based operation and medium contention procedures in wireless networks. In some aspects, devices of a wireless network may perform receiver side contention operations. To illustrate, reference signals from a receiving device may be transmitted to a transmitting device and used by the transmitting device to estimate interference for transmitter side transmissions. Such receiver side reference signals may more accurately reflect the interference profile that transmissions sent by the transmitting device will face, such as when operating in a spectrum shared with many devices. The transmitting device may utilize the beam(s) that satisfy interference criteria when receiving the reference signals to transmit data. Receiver side frame based operation may provide a more stable interference profile which enables better rate prediction, and the better rate prediction may increase reliability and overall network and medium throughput.

    Contention credit-based listen-before-talk (LBT)
    32.
    发明授权
    Contention credit-based listen-before-talk (LBT) 有权

    公开(公告)号：US11974318B2

    公开(公告)日：2024-04-30

    申请号：US17249250

    申请日：2021-02-24

    Applicant: QUALCOMM INCORPORATED

    Inventor： Giovanni Chisci ,  Yisheng Xue ,  Jing Sun ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang

    IPC: H04W74/02 ,  H04W16/14 ,  H04W72/0446

    CPC classification number: H04W74/02 ,  H04W16/14 ,  H04W72/0446

    Abstract: Wireless communications systems and methods related to performing contention credit-based listen-before-talk (LBT) for communications over a shared radio frequency band (e.g., in a shared spectrum or in an unlicensed spectrum) are provided. A wireless communication device performs a first clear channel assessment (CCA) including a first countdown. The wireless communication device transmits, after a gap period from the first countdown, a first communication signal. The wireless communication device performs a second CCA including a second countdown. The wireless communication device transmits, beginning before an end of the second countdown, a second communication signal based on at least a first contention credit associated with the gap period.

    TECHNIQUES FOR SELECTING A MINIMUM MEASUREMENT DURATION IN LISTEN-BEFORE-TALK (LBT) SENSING SLOTS FOR HIGH BAND UNLICENSED CHANNEL ACCESS
    36.
    发明申请
    TECHNIQUES FOR SELECTING A MINIMUM MEASUREMENT DURATION IN LISTEN-BEFORE-TALK (LBT) SENSING SLOTS FOR HIGH BAND UNLICENSED CHANNEL ACCESS 有权

    公开(公告)号：US20230025831A1

    公开(公告)日：2023-01-26

    申请号：US17384586

    申请日：2021-07-23

    Applicant: QUALCOMM Incorporated

    Inventor： Vinay Chande ,  Jing Sun ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Tao Luo

    IPC: H04W74/08 ,  H04W24/08

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for selecting a minimum measurement duration in listen-before-talk (LBT) sensing slots for high band unlicensed channel access. In some examples, a device may select a minimum sensing duration for an LBT procedure according to a sensing bandwidth or an energy threshold (such as an energy detection threshold or an energy power spectral density threshold), or both. As part of the LBT procedure, the device may measure or sense a wireless channel for at least the selected minimum sensing duration in each sensing slot of the LBT procedure. The device may selectively transmit on the wireless channel according to a result of the LBT procedure. For example, the device may either transmit or refrain from transmitting on the wireless channel depending on whether the device senses the wireless channel to be available.

    Staggered synchronization signal blocks in frequency sub-bands for beamformed wireless communications
    37.
    发明授权
    Staggered synchronization signal blocks in frequency sub-bands for beamformed wireless communications 有权

    公开(公告)号：US11490344B2

    公开(公告)日：2022-11-01

    申请号：US17070644

    申请日：2020-10-14

    Applicant: QUALCOMM Incorporated

    Inventor： Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Tao Luo ,  Jing Sun ,  Makesh Pravin John Wilson

    IPC: H04W56/00 ,  H04W16/28 ,  H04W74/08 ,  H04W72/04 ,  H04W24/08

    Abstract: Methods, systems, and devices for wireless communications are described that provide staggered synchronization signal blocks (SSBs) in frequency sub-bands for beamformed wireless communications. Transmissions of SSBs and control channel transmissions (e.g., remaining minimum system information (RMSI) physical downlink control channel (PDCCH) transmissions) may use multiple transmission beams in a beam sweeping procedure. The SSB transmissions may be transmitted using transmission beams that span one frequency sub-band of a number of available frequency sub-bands, and the control channel transmissions may use transmission beams that span two or more of the frequency sub-bands. The SSB beam sweeping procedure may be performed separately during staggered, non-overlapping time periods for each frequency sub-band of the number of frequency sub-bands. Each of the of SSBs may indicate a reference timing of the base station used to identify a set of resources (e.g., a control resource set (CORESET)) that carries control channel transmissions.

    Interference coordination region configuration
    38.
    发明授权
    Interference coordination region configuration 有权

    公开(公告)号：US11412527B2

    公开(公告)日：2022-08-09

    申请号：US16915259

    申请日：2020-06-29

    Applicant: QUALCOMM Incorporated

    Inventor： Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Tao Luo ,  Srinivas Yerramalli ,  Vinay Chande ,  Mostafa Khoshnevisan ,  Jing Sun ,  Xiaoxia Zhang ,  Wooseok Nam

    IPC: H04W72/12 ,  H04L27/26 ,  H04B7/06 ,  H04L41/0803

    Abstract: Methods, systems, and devices for wireless communications are described. In some systems implementing beamforming, a neighboring base station may cause interference to a user equipment (UE) served by a different base station. To mitigate unexpected interference, an interference coordination region including time and frequency resources may be configured between the base stations. The interference coordination region may be configured based on long-term information for the base stations and may include one or both of a set of beam-avoidance sub-regions or a set of beam-preference sub-regions for a base station, where each sub-region is associated with a beam index. A base station may schedule a communication beam in the interference coordination region based on a beam-avoidance region (e.g., refraining from using a particular communication beam) or a beam-preference region (e.g., prioritizing a particular communication beam). The base station may transmit a message to a UE using the scheduled communication beam.

    CATEGORY 4 (CAT4) LISTEN-BEFORE-TRANSMIT (LBT) OPERATIONS FOR WIRELESS COMMUNICATIONS
    39.
    发明申请
    CATEGORY 4 (CAT4) LISTEN-BEFORE-TRANSMIT (LBT) OPERATIONS FOR WIRELESS COMMUNICATIONS 有权

    公开(公告)号：US20220110158A1

    公开(公告)日：2022-04-07

    申请号：US17449870

    申请日：2021-10-04

    Applicant: QUALCOMM Incorporated

    Inventor： Jing Sun ,  Vinay Chande ,  Arumugam Chendamarai Kannan ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic

    IPC: H04W74/08 ,  H04W72/04 ,  H04W24/10 ,  H04W74/00

    Abstract: A method of wireless communication includes determining, by a communication device, a value of a counter associated with a listen-before-talk (LBT) operation. The method further includes, after determining the value of the counter and during a first portion of a deferral interval associated with the LBT operation, performing a first measurement of a particular duration to determine a first energy value. The method further includes, during a second portion of the deferral interval subsequent to the first portion, performing a second measurement of the particular duration to determine a second energy value. The method also includes determining whether to initiate a contention interval associated with the LBT operation based on the first energy value and further based on the second energy value.

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