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    CONFIGURATION FOR LTE IN UNLICENSED SPECTRUM
    131.
    发明专利
    CONFIGURATION FOR LTE IN UNLICENSED SPECTRUM 未知

    公开(公告)号：TN2017000282A1

    公开(公告)日：2019-01-16

    申请号：TN2017000282

    申请日：2016-01-25

    Applicant: QUALCOMM INC

    Inventor： CHEN WANSHI ,  DAMNJANOVIC ALEKSANDAR ,  GAAL PETER ,  LUO TAO ,  XU HAO ,  YERRAMALLI SRINIVAS ,  ZHANG XIAOXIA

    IPC: H04L5/00 ,  H04W16/00 ,  H04W72/00

    Abstract: In the application of TDD and eIMTA to LTE in the unlicensed spectrum, various alterations may be needed to compensate for interference from and the behavior of RATs operating in this range of frequencies. Various UE and base station methods are presented, including modified TDD configurations and UE behaviors to advance operations on unlicensed spectrum. A method, an apparatus, and a computer-readable medium for wireless communication are provided whereby configuration information is conveyed to a UE for communicating on a carrier in the unlicensed spectrum. The configuration information indicates a subframe allocation for at least one frame on the unlicensed carrier. Other aspects are directed to the detection of the transmission, communication of new and modified eIMTA configuration transmissions, and mechanism and behaviors which address unreceived configuration information.

    Multiple antennas and interruption time values for sounding reference signal (SRS) switching
    135.
    发明专利
    Multiple antennas and interruption time values for sounding reference signal (SRS) switching 未知

    公开(公告)号：AU2017290573A1

    公开(公告)日：2018-12-13

    申请号：AU2017290573

    申请日：2017-06-27

    Applicant: QUALCOMM INC

    Inventor： RICO ALVARINO ALBERTO ,  CHEN WANSHI ,  XU HAO ,  GAAL PETER ,  YERRAMALLI SRINIVAS ,  SUN JING

    IPC: H04L5/00 ,  H04L5/14

    Abstract: A user equipment (UE) may transmit a sounding reference signal (SRS) on a component carrier (CC) that is otherwise configured for downlink communications. Due to a carrier aggregation configuration or UE capability, the UE may need to retune certain components to transmit on the CC. If the SRS transmission, including the retuning time, collides with another transmission (e.g., in uplink or downlink) the UE may drop the SRS, drop the other transmission, or puncture the other transmission to facilitate the SRS transmission. The determination about a collision may depend on the retuning time, channel, or type of control information in the other transmission. In some cases, a UE may drop the other transmission if transmitting the SRS would prevent the UE from transmitting a demodulation reference signal, hybrid automatic repeat request (HARQ) feedback. In some cases, the determination may be based upon a prioritization and may also depend on a subsequent subframe.

    Techniques for configuring uplink control channel transmissions in a shared radio frequency spectrum band
    136.
    发明专利
    Techniques for configuring uplink control channel transmissions in a shared radio frequency spectrum band 未知

    公开(公告)号：AU2017245147A1

    公开(公告)日：2018-09-06

    申请号：AU2017245147

    申请日：2017-03-29

    Applicant: QUALCOMM INC

    Inventor： YERRAMALLI SRINIVAS ,  CHEN WANSHI ,  GAAL PETER ,  MONTOJO JUAN

    IPC: H04L5/00 ,  H04W16/14 ,  H04W24/10 ,  H04W72/04 ,  H04W72/12

    Abstract: Uplink control channel transmission in a shared radio frequency spectrum band may be transmitted using different uplink resources UCI based on a format of uplink control information (UCI) to be transmitted in the uplink control channel transmission. Different time resources, frequency resources, or combinations thereof, for the transmission of UCI by a UE may be provided by a base station and selected by the UE based on a UCI format. The resources to be used for UCI transmission may semi-statically configured, or dynamically indicated to a UE. Uplink transmissions may be configured in interlaces of frequency resources, with each interlace having one or more segments, and a base station may configure different segments for transmission of different format UCI. In some cases, different subframes, or different component carriers, may be configured for different formats of UCI.

    Enhanced licensed assisted access uplink channel access
    137.
    发明专利
    Enhanced licensed assisted access uplink channel access 未知

    公开(公告)号：AU2016348310A1

    公开(公告)日：2018-04-26

    申请号：AU2016348310

    申请日：2016-10-28

    Applicant: QUALCOMM INC

    Inventor： YERRAMALLI SRINIVAS ,  LUO TAO ,  ZHANG XIAOXIA ,  GAAL PETER

    IPC: H04W74/00 ,  H04W74/02 ,  H04W74/08

    Abstract: Solutions to problems from delays in channel acquisition by UEs in a contention- based shared radio frequency spectrum band are disclosed. For example, if an eNB knows of a recent or ongoing downlink transmission on a frequency to be used for uplink transmission by a UE, then the eNB may instruct the UE to either skip performance of LBT on that frequency or else perform a type of LBT that is shorter in duration than a full CCA. One way for the eNB to instruct the UE in this fashion is to set an indicator in an uplink grant transmitted to the UE on another frequency. Additionally, in order to avoid truncation of an uplink transmission opportunity, an eNB may notify a UE that an uplink grant is valid for more than one starting point.

    LTE CHANNEL ACCESS OVER UNLICENSED BANDS
    138.
    发明专利
    LTE CHANNEL ACCESS OVER UNLICENSED BANDS 未知

    公开(公告)号：SG10201710370WA

    公开(公告)日：2018-02-27

    申请号：SG10201710370W

    申请日：2014-06-30

    Applicant: QUALCOMM INC

    Inventor： YERRAMALLI SRINIVAS ,  LUO TAO ,  BHUSHAN NAGA ,  GAAL PETER

    Abstract: Methods, systems, and devices are described for wireless communications. In one method, a clear channel assessment (CCA) may be performed at a base station to determine availability of an unlicensed spectrum. A first waveform may be transmitted to a set of user equipments (UEs) over the unlicensed spectrum when available. The first waveform may indicate a first time period and a second time period during which the base station has channel access over the unlicensed spectrum. A second waveform may be received from one or more UEs responsive to the first waveform. Each second waveform may be received over the unlicensed spectrum during the first time period and may indicate that the respective UE has channel access over the unlicensed spectrum to receive data from the base station during the second time period.

    LATENCY REDUCTION TECHNIQUES IN WIRELESS COMMUNICATIONS
    140.
    发明专利
    LATENCY REDUCTION TECHNIQUES IN WIRELESS COMMUNICATIONS 未知

    公开(公告)号：CA3025184A1

    公开(公告)日：2018-01-11

    申请号：CA3025184

    申请日：2017-07-06

    Applicant: QUALCOMM INC

    Inventor： CHEN WANSHI ,  HOSSEINI SEYEDKIANOUSH ,  GAAL PETER ,  YERRAMALLI SRINIVAS ,  XU HAO ,  SUN JING ,  PATEL SHIMMAN ARVIND ,  KHANDEKAR AAMOD

    IPC: H04L1/18 ,  H04L5/00

    Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

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