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    DETECTION OF FIXED SERVICE INCUMBENTS ON AN UNLICENSED RADIO FREQUENCY BAND
    1.
    发明申请
    DETECTION OF FIXED SERVICE INCUMBENTS ON AN UNLICENSED RADIO FREQUENCY BAND 有权

    公开(公告)号：US20210243608A1

    公开(公告)日：2021-08-05

    申请号：US17155894

    申请日：2021-01-22

    Applicant: QUALCOMM Incorporated

    Inventor： Aleksandar DAMNJANOVIC ,  Tevfik YUCEK ,  Yongbin WEI

    IPC: H04W16/14 ,  H04W24/10 ,  H04B17/318

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a node may receive a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; measure the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration, and operate in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band. Numerous other aspects are provided.

    TECHNIQUES FOR RESERVATION PREAMBLE FOR LOW LATENCY DETECTION IN A NEW RADIO SHARED SPECTRUM COMMUNICATION SYSTEM
    2.
    发明申请
    TECHNIQUES FOR RESERVATION PREAMBLE FOR LOW LATENCY DETECTION IN A NEW RADIO SHARED SPECTRUM COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20200275478A1

    公开(公告)日：2020-08-27

    申请号：US16871971

    申请日：2020-05-11

    Applicant: QUALCOMM Incorporated

    Inventor： Taesang YOO ,  Jing LEI ,  Juan MONTOJO ,  Yongbin WEI

    IPC: H04W74/00 ,  H04L5/00 ,  H04W16/14 ,  H04W72/12

    Abstract: Methods and apparatuses for transmitting and detecting channel reservation preamble in a NR shared spectrum are described. An aspect may include determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, and transmitting a second reservation preamble of the first operator on an uplink channel to the second network entity. Another aspect may include generating a first reservation preamble of a first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a CAZAC sequences; and transmitting, on a first timeslot of multiple time slots of a downlink channel, the first reservation preamble of the first operator to at least a UE. In another aspect, the SFN transmission of the first and second reservation preambles, and the low latency detection methods of the reservation preambles have been disclosed.

    TRANSMISSION POWER DEPENDENT QUIET PERIODS FOR NR-U
    3.
    发明申请
    TRANSMISSION POWER DEPENDENT QUIET PERIODS FOR NR-U 审中-公开

    公开(公告)号：US20200221392A1

    公开(公告)日：2020-07-09

    申请号：US16733756

    申请日：2020-01-03

    Applicant: QUALCOMM Incorporated

    Inventor： Yisheng XUE ,  Aleksandar DAMNJANOVIC ,  Xiaoxia ZHANG ,  Jing SUN ,  Yongbin WEI

    IPC: H04W52/28 ,  H04W16/14 ,  H04W74/08

    Abstract: A periodic quiet interval is provided for base stations attempting to access a shared transmission medium in NR-U. The base station activates a quiet interval at a periodic interval and transmits on the medium based on the quiet interval. The base station may reduce a Tx power, not transmit, and/or may increase a minimum value of a contention window for BEB during the quiet interval. The base station may receive a request from a second base station to activate the quiet interval, and may determine if a Tx power of the base station is larger than the maximum Tx power of the second base station. The base station may also receive the request as relayed through a UE. The quiet interval can thus ameliorate a starvation effect of BEB in NR-U by allowing base stations with smaller Tx power greater opportunity to control the medium while maintaining BEB in NR-U.

    COEXISTENCE BETWEEN SPECTRUM SHARING SYSTEMS AND ASYNCHRONOUS CHANNEL ACCESS SYSTEMS
    4.
    发明申请
    COEXISTENCE BETWEEN SPECTRUM SHARING SYSTEMS AND ASYNCHRONOUS CHANNEL ACCESS SYSTEMS 审中-公开

    公开(公告)号：US20200045556A1

    公开(公告)日：2020-02-06

    申请号：US16529691

    申请日：2019-08-01

    Applicant: QUALCOMM Incorporated

    Inventor： Yisheng XUE ,  Aleksandar DAMNJANOVIC ,  Yongbin WEI ,  Siddhartha MALLIK ,  Tamer KADOUS

    IPC: H04W16/14 ,  H04W72/12 ,  H04W74/04

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may select a plurality of channel access intervals during which the device is associated with a priority condition relative to another device for communications by the device, wherein each of the plurality of channel access intervals includes a respective contention interval and a respective transmission opportunity; and may transmit, during a contention interval of a first channel access interval of the plurality of channel access intervals, a signal that includes: channel occupancy information for the device for a first transmission opportunity of the first channel access interval, and information that identifies at least a portion of one or more subsequent channel access intervals, of the plurality of channel access intervals, associated with the device. Numerous other aspects are provided.

    SHARED SPECTRUM SYNCHRONIZATION DESIGN
    7.
    发明申请
    SHARED SPECTRUM SYNCHRONIZATION DESIGN 审中-公开

    公开(公告)号：US20190037481A1

    公开(公告)日：2019-01-31

    申请号：US16043042

    申请日：2018-07-23

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxia ZHANG ,  Yongbin WEI ,  Tamer KADOUS ,  Tao LUO ,  Jing SUN

    IPC: H04W48/16 ,  H04L5/00 ,  H04W16/14 ,  H04J11/00

    Abstract: Methods, systems, and devices for wireless communication are described. A base station may perform a Listen-Before-Talk (LBT) procedure to obtain access to a wireless communication channel. The base station may then determine a pattern of synchronization signal block (SSB) transmissions based on an outcome of the LBT procedure and transmit the pattern of SSB transmissions after obtaining access to the wireless communication channel. The outcome of the LBT procedure may include obtaining access to the wireless communication channel after a missed opportunity for at least one SSB transmission in a discovery reference signal (DRS) measurement timing configuration (DMTC) window. A user equipment (UE) may determine system timing based on a received SSB transmission.

    TECHNIQUES FOR RESERVATION PREAMBLE FOR LOW LATENCY DETECTION IN A NEW RADIO SHARED SPECTRUM COMMUNICATION SYSTEM
    8.
    发明申请
    TECHNIQUES FOR RESERVATION PREAMBLE FOR LOW LATENCY DETECTION IN A NEW RADIO SHARED SPECTRUM COMMUNICATION SYSTEM 审中-公开

    公开(公告)号：US20180139777A1

    公开(公告)日：2018-05-17

    申请号：US15811138

    申请日：2017-11-13

    Applicant: QUALCOMM Incorporated.

    Inventor： Taesang YOO ,  Jing LEI ,  Juan MONTOJO ,  Yongbin WEI

    IPC: H04W74/00 ,  H04W16/14 ,  H04W72/12 ,  H04L5/00

    Abstract: Methods and apparatuses for transmitting and detecting channel reservation preamble in a NR shared spectrum are described. An aspect may include determining whether a first reservation preamble of a first operator is received on a first time slot of multiple time slots of a downlink channel from a first network entity, and transmitting a second reservation preamble of the first operator on an uplink channel to the second network entity. Another aspect may include generating a first reservation preamble of a first operator based on at least one of a compressed representation in a signal space, a basis function of the signal space, or a CAZAC sequences; and transmitting, on a first timeslot of multiple time slots of a downlink channel, the first reservation preamble of the first operator to at least a UE. In another aspect, the SFN transmission of the first and second reservation preambles, and the low latency detection methods of the reservation preambles have been disclosed.

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