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    Techniques for managing transmissions in an unlicensed radio frequency spectrum band
    571.
    发明授权
    Techniques for managing transmissions in an unlicensed radio frequency spectrum band 有权

    公开(公告)号：US10425928B2

    公开(公告)日：2019-09-24

    申请号：US15894514

    申请日：2018-02-12

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

    IPC: H04W72/12 ,  H04W72/04 ,  H04W28/06 ,  H04J13/00 ,  H04L5/00 ,  H04W76/27 ,  H04L5/14

    Abstract: A first method for wireless communications may comprise determining sizes of payloads of user equipments (UEs), determining whether to multiplex the payloads of the UEs based on the sizes of the payloads, and allocating codes or cyclic shifts to the UEs to transmit the payloads on a single interlace of resources. A second method for wireless communications may comprise determining a first code or a first cyclic shift used for a first transmission using an interlace of resources, and allocating second codes or second cyclic shifts to UEs for a second transmission, where the second transmission may be multiplexed with the first transmission on the interlace of resources. A third method for wireless communications may comprise allocating a first interlace of resources for a first transmission for occupying an unlicensed radio frequency spectrum band, and allocating a second interlace of resources, occupied by a base station, for a second transmission.

    BEAM TRACKING FOR PERIODIC USER EQUIPMENT MOVEMENT
    574.
    发明申请
    BEAM TRACKING FOR PERIODIC USER EQUIPMENT MOVEMENT 审中-公开

    公开(公告)号：US20190268053A1

    公开(公告)日：2019-08-29

    申请号：US16281839

    申请日：2019-02-21

    Applicant: QUALCOMM Incorporated

    Inventor： Makesh Pravin John Wilson ,  Srinivas Yerramalli ,  Tao Luo ,  Sumeeth Nagaraja ,  Sony Akkarakaran

    IPC: H04B7/06 ,  H04W76/38 ,  H04W72/04 ,  H04W24/10

    Abstract: Methods, systems, and devices for wireless communications are described techniques provide for the identification of a sequence of beamforming parameters that are used for communications between a user equipment (UE) and a base station using a sequence of transmission beams. A UE may measure received reference signals that are transmitted in a series of downlink transmission beams from a base station, and report measurement parameters associated with the downlink transmission beams to the base station as part of a beam tracking and beam refinement procedure. The base station may provide transmission configuration indicator (TCI) states that are associated with each transmission beam. The TCI states may be recorded over a course of a periodic movement of the UE, and may be used deterministically to identify beamforming parameters for transmission and reception of a subsequent series of downlink transmission beams when the UE makes a subsequent same periodic movement.

    Network architecture for multi-band operation
    575.
    发明授权
    Network architecture for multi-band operation 有权

    公开(公告)号：US10397976B2

    公开(公告)日：2019-08-27

    申请号：US16022522

    申请日：2018-06-28

    Applicant: QUALCOMM Incorporated

    Inventor： Rahul Malik ,  Srinivas Yerramalli

    IPC: H04W16/32 ,  H04W76/27 ,  H01Q5/307 ,  H04L5/00 ,  H04W24/10 ,  H04B1/00 ,  H04B1/403 ,  H04W16/10 ,  H04W24/02 ,  H04W24/08

    Abstract: Methods, systems, and devices for wireless communication are described. Some wireless communications systems may support multi-band operation. Different frequency bands may experience different communication characteristics (e.g., frequency-dependent fading), which may result in undesirable interference patterns and/or coverage gaps. The described techniques provide for a network architecture that optimizes throughput while considering interference metrics. The network architecture may in some cases adapt to changes in the communication environment (e.g., dynamically or semi-statically), and the adaptation may be autonomous or may be performed in conjunction with a coordinating entity. Additionally, the described techniques provide for improved mobility procedures for devices within the network, which may improve throughput, reduce latency, or otherwise benefit the wireless communications system.

    Sounding reference signals with collisions in asymmetric carrier aggregation
    578.
    发明授权
    Sounding reference signals with collisions in asymmetric carrier aggregation 有权

    公开(公告)号：US10333670B2

    公开(公告)日：2019-06-25

    申请号：US15479113

    申请日：2017-04-04

    Applicant: QUALCOMM Incorporated

    Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Peter Gaal ,  Jing Sun ,  Hao Xu ,  Srinivas Yerramalli

    IPC: H04L5/00 ,  H04L5/14 ,  H04W72/04 ,  H04W56/00

    Abstract: An apparatus may use inactive uplink portions of a downlink CC to transmit SRS to an eNB. At times there may be a collision between the SRS transmission and uplink transmissions or downlink transmissions on another CC. The apparatus receives a carrier aggregation configuration for a first downlink CC and a second CC, determines to transmit an uplink transmission on the second CC or to receive a downlink transmission on the second CC, determines that the SRS would at least partially collide with the uplink transmission or the downlink transmission, and determines to adjust at least one of the uplink transmission, the SRS transmission, or reception of the downlink transmission based on the determination of the collision and an interruption time to transmit the SRS in the uplink portion of the first CC.

    Common HARQ processes
    579.
    发明授权
    Common HARQ processes 有权

    公开(公告)号：US10313079B2

    公开(公告)日：2019-06-04

    申请号：US14465012

    申请日：2014-08-21

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Wanshi Chen ,  Yongbin Wei

    IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18

    Abstract: A sharing of common hybrid automatic repeat request (HARQ) process space by multiple unlicensed spectrum component carriers is described. Because communication access is not guaranteed over the unlicensed spectrum, a set of component carriers in the unlicensed spectrum is assigned to share a common HARQ process space, such that uplink or downlink data will be transmitted over any one or more of the set of component carriers that clear a clear channel assessment (CCA) check. The receiver then provides a HARQ process response over the same HARQ process space using the grouped component carriers that share that common HARQ process space. Thus, any one or more of the set of component carriers sharing the common HARQ process space may both carry the transmitted data and carry the HARQ process response to the attempted data transmission.

    SEMI-PERSISTENT SCHEDULING FOR SHARED SPECTRUM DOWNLINK
    580.
    发明申请
    SEMI-PERSISTENT SCHEDULING FOR SHARED SPECTRUM DOWNLINK 审中-公开

    公开(公告)号：US20190166621A1

    公开(公告)日：2019-05-30

    申请号：US16170438

    申请日：2018-10-25

    Applicant: QUALCOMM Incorporated

    Inventor： Srinivas Yerramalli ,  Farhad Meshkati ,  Tamer Kadous

    IPC: H04W74/00 ,  H04W16/14

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a semi-persistent scheduling (SPS) configuration message from a base station, the SPS configuration message containing at least one SPS parameter for downlink SPS communications over a shared radio frequency spectrum band. The UE may identify, based on the SPS configuration, one or more subframes or slots allocated for the downlink SPS communications. The UE may perform the downlink SPS communications during the one or more subframes or slots and according to the SPS configuration.

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