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    Timing advance reporting for latency reduction
    183.
    发明授权
    Timing advance reporting for latency reduction 有权

    公开(公告)号：US10652894B2

    公开(公告)日：2020-05-12

    申请号：US15807881

    申请日：2017-11-09

    Applicant: QUALCOMM Incorporated

    Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel

    IPC: H04W56/00 ,  H04W72/04 ,  H04W72/08

    Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station may communicate according to a timing configuration that includes a time delay between uplink and downlink communications. The time delay may be based on UE capabilities, scheduling in the system, and an uplink timing advance. The UE may determine an uplink timing advance and transmit an indication of the uplink timing advance to the base station. Using the uplink timing advance, the base station may determine a timing configuration to use for communicating with the UE. The timing configuration may be dynamically configured based on the value of the uplink timing advance with respect to a timing advance threshold and may be shortened or lengthened depending on whether the uplink timing advance crosses the timing advance threshold. Multiple timing advance thresholds may be used, and a timing configuration may be selected accordingly.

    Techniques for cross-carrier scheduling using multiple transmission time interval durations
    184.
    发明授权
    Techniques for cross-carrier scheduling using multiple transmission time interval durations 有权

    公开(公告)号：US10595313B2

    公开(公告)日：2020-03-17

    申请号：US15789776

    申请日：2017-10-20

    Applicant: QUALCOMM Incorporated

    Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel

    IPC: H04W72/04 ,  H04W72/12 ,  H04W72/14 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described in which scheduling of time and frequency resources for multiple component carriers (CCs) may be provided in a low latency physical downlink control channel (sPDCCH) transmission to a user equipment (UE). The scheduling information may include a first portion that is transmitted during a first transmission time interval (TTI) and that includes scheduling information (UE-specific or common for multiple UEs) for two or more shortened TTIs (sTTIs) on one or more CCs, and a second portion that may be specific to the particular sTTI on one or more CCs. Rate matching information may be provided to indicate portions of the sPDCCH that may be reallocated for shared channel transmissions. The scheduling information may be, in some cases, provided in a single-level scheduling information transmission for two or more UEs, that provides UE-specific resources on one or more CCs.

    Dynamic time division duplexing
    187.
    发明授权
    Dynamic time division duplexing 有权

    公开(公告)号：US10432387B2

    公开(公告)日：2019-10-01

    申请号：US15704733

    申请日：2017-09-14

    Applicant: QUALCOMM Incorporated

    Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Peter Gaal ,  Jing Sun ,  Shimman Arvind Patel

    IPC: H04L5/14 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described. A base station may allocate resources for communication with a user equipment (UE). The resources may include one or more subframes, and each subframe may include one or more shortened transmission time intervals (sTTIs). Each sTTI may be assigned a transmission direction according to a time division duplex (TDD) pattern. Based on traffic needs and/or interference from other UEs and/or base stations, the base station may determine to modify the TDD pattern used for communication. Accordingly, a base station may transmit an indicator in a control message or control region of a TTI or sTTI, to indicate to users that a transmission direction of an sTTI in the TDD pattern is being changed. Subsequently, a user may communicate with the base station according to the reconfigured TDD pattern.

    Asymmetric downlink-uplink transmission time interval configurations for low latency operation
    190.
    发明授权
    Asymmetric downlink-uplink transmission time interval configurations for low latency operation 有权

    公开(公告)号：US10396943B2

    公开(公告)日：2019-08-27

    申请号：US15841278

    申请日：2017-12-13

    Applicant: QUALCOMM Incorporated

    Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Shimman Arvind Patel ,  Hao Xu

    IPC: H04L1/18 ,  H04W72/12 ,  H04L23/00 ,  H04W56/00 ,  H04W72/04 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described that identify an uplink transmission time interval (TTI) length for uplink transmissions, and a downlink TTI length for downlink transmissions, in which the uplink TTI length and the downlink TTI length may be different. The downlink TTI length may be a shortened TTI (sTTI) length, and the uplink TTI length may be longer than the downlink sTTI length. Various parameters for transmissions may be determined based on one or more of the uplink TTI length or the downlink TTI length, such as one or more of a feedback process transmission timing, a timing advance (TA) value, a transport block size (TBS), a number of spatial layers, a number of component carriers (CCs), or a channel quality information (CQI) reporting type may be determined based on one or more of the uplink TTI length or the downlink TTI length.

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