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    Cooperative hidden node identification and management
    1.
    发明授权
    Cooperative hidden node identification and management 有权

    公开(公告)号：US10602545B2

    公开(公告)日：2020-03-24

    申请号：US15591475

    申请日：2017-05-10

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Anastasios Stamoulis ,  Jing Sun ,  Aleksandar Damnjanovic ,  Juan Montojo

    IPC: H04W74/08 ,  H04W72/08 ,  H04W48/08 ,  H04W48/16 ,  H04W74/00 ,  H04W72/04 ,  H04W84/12

    Abstract: Methods, systems, and devices for wireless communication are described that provide for detection and management of hidden node interference. A user equipment (UE) may provide measurement reports to a serving transmitting device to help identify the hidden node interferer in response to detecting hidden node interference. The serving transmitting device may collaborate with one or more neighboring transmitting devices, such as other transmitting devices of an operator of a wireless communications system, to identify one or more of the neighboring transmitting devices that are within an energy detect or preamble detect radius of the hidden node. The serving transmitting device may coordinate with the neighboring transmitting device(s) to determine when the hidden node may transmit, to transmit coordinated preamble transmissions to prevent the hidden node from transmitting during a transmission, or to identify a modulation and coding scheme for the transmission.

    SYNCHRONIZATION TECHNIQUES FOR MULTIPLE NODES IN A WIRELESS COMMUNICATIONS SYSTEM
    3.
    发明申请
    SYNCHRONIZATION TECHNIQUES FOR MULTIPLE NODES IN A WIRELESS COMMUNICATIONS SYSTEM 审中-公开

    公开(公告)号：US20170332338A1

    公开(公告)日：2017-11-16

    申请号：US15487359

    申请日：2017-04-13

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Mallik ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Juan Montojo

    IPC: H04W56/00 ,  H04W74/08 ,  H04W48/10

    CPC classification number: H04W56/001 ,  H04W48/10

    Abstract: Synchronization techniques for wireless nodes in a shared radio frequency spectrum band may include performing a listen before talk (LBT) procedure (e.g., a clear channel assessment (CCA) procedure) at identified resynchronization boundaries and initiating transmissions following successful LBT procedures. In the event that a node loses synchronization between resynchronization boundaries, such as due to an unsuccessful LBT procedure, the node becomes unsynchronized and may initiate an LBT procedure separate from the other nodes of the set of nodes. At a subsequent resynchronization boundary, the unsynchronized node may perform a resynchronization procedure in order to again become synchronized with other nodes of the set of nodes. In cases where the resynchronization procedure is unsuccessful, a parameter associated with the resynchronization procedure may be adapted to increase an interval for performing the resynchronization procedure.

    LICENSE ASSISTED REQUEST-TO-SEND AND CLEAR-TO-SEND TRANSMISSION
    5.
    发明申请
    LICENSE ASSISTED REQUEST-TO-SEND AND CLEAR-TO-SEND TRANSMISSION 审中-公开

    公开(公告)号：US20180035463A1

    公开(公告)日：2018-02-01

    申请号：US15649074

    申请日：2017-07-13

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jing Sun ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Juan Montojo

    IPC: H04W74/08 ,  H04W72/04 ,  H04W16/14

    CPC classification number: H04W74/0816 ,  H04W16/14 ,  H04W72/0453 ,  H04W88/06

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) or base station communicating in an unlicensed radio frequency spectrum band may transmit a signal (e.g., a request-to-send (RTS) or clear-to-send (CTS) signal) in a licensed radio frequency spectrum band to decrease the likelihood that neighboring devices will transmit interfering communications. Specific resources may be designated in the licensed radio frequency spectrum band for transmitting these signals, and these resources may be associated with specific unlicensed channels. Signaling in the licensed radio frequency spectrum band may also carry an indication of the unlicensed channel being used or other information relevant to the unlicensed communication. The RTS/CTS signaling in licensed radio frequency spectrum band may be transmitted during a downlink transmit opportunity or an uplink transmit opportunity, or both. Different energy detection thresholds may apply to RTS/CTS signals in licensed and unlicensed spectrum.

    License assisted request-to-send and clear-to-send transmission
    6.
    发明授权
    License assisted request-to-send and clear-to-send transmission 有权

    公开(公告)号：US10681733B2

    公开(公告)日：2020-06-09

    申请号：US15649074

    申请日：2017-07-13

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Mallik ,  Taesang Yoo ,  Jing Sun ,  Anastasios Stamoulis ,  Aleksandar Damnjanovic ,  Juan Montojo

    IPC: H04W4/00 ,  H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04W88/06

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) or base station communicating in an unlicensed radio frequency spectrum band may transmit a signal (e.g., a request-to-send (RTS) or clear-to-send (CTS) signal) in a licensed radio frequency spectrum band to decrease the likelihood that neighboring devices will transmit interfering communications. Specific resources may be designated in the licensed radio frequency spectrum band for transmitting these signals, and these resources may be associated with specific unlicensed channels. Signaling in the licensed radio frequency spectrum band may also carry an indication of the unlicensed channel being used or other information relevant to the unlicensed communication. The RTS/CTS signaling in licensed radio frequency spectrum band may be transmitted during a downlink transmit opportunity or an uplink transmit opportunity, or both. Different energy detection thresholds may apply to RTS/CTS signals in licensed and unlicensed spectrum.

    Modulation and coding scheme (MCS) and/or rank selection in coordinated multi-point (CoMP) communication
    8.
    发明授权
    Modulation and coding scheme (MCS) and/or rank selection in coordinated multi-point (CoMP) communication 有权

    公开(公告)号：US10542556B2

    公开(公告)日：2020-01-21

    申请号：US15709086

    申请日：2017-09-19

    Applicant: QUALCOMM Incorporated

    Inventor： Siddhartha Mallik ,  Anastasios Stamoulis ,  Juan Montojo

    IPC: H04W88/02 ,  H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W88/08

    Abstract: Certain aspects of the present disclosure provide techniques for MCS and/or rank selection for UE jointly served by BSs in a CoMP cluster. As described herein, MCS and/or rank selection may be based, at least in part, on the inter-cluster interference and intra-cluster interference experienced by the UE. According to aspects, a CoMP scheduler may assign a UE served by BSs in a CoMP cluster to one of a first group of UEs or a second group of UEs based, at least in part, on inter-cluster and intra-cluster interference experienced by the UE. The scheduler may assign at least one of a MCS or rank selection to the UE based, at least in part, on the assigned group. The scheduler may provide an indication, to one or more BSs in the CoMP cluster, of the at least one MCS or rank selection assigned to the UE.

    TECHNIQUES FOR ACQUIRING MEASUREMENTS OF A SHARED SPECTRUM AND PERFORMING CHANNEL SELECTION FOR ACCESS POINTS USING THE SHARED SPECTRUM
    10.
    发明申请
    TECHNIQUES FOR ACQUIRING MEASUREMENTS OF A SHARED SPECTRUM AND PERFORMING CHANNEL SELECTION FOR ACCESS POINTS USING THE SHARED SPECTRUM 有权
    获取共享光谱测量的技术和使用共享光谱对接入点执行通道选择的技术

    公开(公告)号：US20150280847A1

    公开(公告)日：2015-10-01

    申请号：US14630216

    申请日：2015-02-24

    Applicant: QUALCOMM Incorporated

    Inventor： Kiran Kumar Somasundaram ,  Dexu Lin ,  Naga Bhushan ,  Aleksandar Damnjanovic ,  Wanshi Chen ,  Peter Gaal ,  Anastasios Stamoulis ,  Gavin Bernard Horn ,  Onkar Dabeer ,  Yongbin Wei ,  Durga Prasad Malladi ,  Tingfang Ji ,  Hao Xu

    IPC: H04J11/00 ,  H04W72/08 ,  H04L5/00

    CPC classification number: H04J11/0056 ,  H04L1/20 ,  H04L5/0048 ,  H04W72/082

    Abstract: Techniques are described for wireless communication. A first method may include transmitting a reference signal from an access point over a shared spectrum to a user equipment (UE), and receiving a measurement of the reference signal from the UE. A second method may include receiving at a UE over a shared spectrum a reference signal from an access point, and transmitting a measurement of the reference signal to the access point. In each of the first and second methods, the measurement may indicate interference with the shared spectrum from outside of a clear channel assessment (CCA) range of the access point. A third method may include receiving a plurality of reference signal measurements, where each reference signal measurement corresponds to one of a plurality of access points and indicates interference with a shared spectrum from outside of a CCA range of the corresponding access point, and performing channel selection for the plurality of access points based at least in part on the received reference signal measurements.

    Abstract translation: 技术描述为无线通信。 第一种方法可以包括通过共享频谱将参考信号从接入点发送到用户设备（UE），以及从UE接收参考信号的测量。 第二种方法可以包括：通过共享频谱在UE处接收来自接入点的参考信号，以及将参考信号的测量值传送到接入点。 在第一和第二方法中的每一个中，测量可以指示从接入点的清晰信道评估（CCA）范围之外的共享频谱的干扰。 第三种方法可以包括接收多个参考信号测量，其中每个参考信号测量对应于多个接入点中的一个，并指示来自相应接入点的CCA范围之外的共享频谱的干扰，并且执行信道选择 至少部分地基于所接收的参考信号测量值对于所述多个接入点。

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