Precoding management for random access procedures

    公开(公告)号:AU2017334720A1

    公开(公告)日:2019-03-07

    申请号:AU2017334720

    申请日:2017-09-05

    Applicant: QUALCOMM INC

    Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes transmitting precoder selection signals from at least two antennas of the UE during performance of a random access procedure over a wireless network; and receiving, from the wireless network during the random access procedure, an indication of a refined precoding setting for the UE. A method for wireless communication at a network access device includes receiving, from a UE during a random access procedure performed by the UE, precoder selection signals from at least two antennas of the UE; identifying a refined precoding setting for the UE based at least in part on the received precoder selection signals; and transmitting an indication of the refined precoding setting to the UE.

    Downlink channel design for LTE with low latency

    公开(公告)号:AU2015321923B2

    公开(公告)日:2019-02-14

    申请号:AU2015321923

    申请日:2015-08-27

    Applicant: QUALCOMM INC

    Abstract: An example data structure for managing user equipment communications in a wireless communications system is presented, as well as methods and apparatuses configured to implement the data structure. For instance, the data structure may include a downlink subframe comprising two slots and including one or more quick downlink channels having a single-slot transmission time interval. In addition, the example data structure may include one or more resource element blocks each comprising one or more resource elements into which a frequency bandwidth is divided within one or both of the two slots, wherein each of the one or more resource element blocks comprises a control channel region or a data channel region. Furthermore, the example data structure may include one or more resource grants, located within one or more control channel regions, for one or more user equipment served by the one or more quick downlink channels.

    Multiple transmission time interval coordination with time division duplexing

    公开(公告)号:AU2017263821A1

    公开(公告)日:2018-10-18

    申请号:AU2017263821

    申请日:2017-05-12

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

    Random access channel design for narrowband wireless communication

    公开(公告)号:AU2016315627A1

    公开(公告)日:2018-02-01

    申请号:AU2016315627

    申请日:2016-08-24

    Applicant: QUALCOMM INC

    Abstract: Random access techniques may use subcarriers allocated for random access requests in narrowband communication. Physical resources may be selected for transmission of a random access request based on a coverage class of a user equipment (UE). In some examples, a set of coverage classes may be identified based on one or more UE channel conditions, such as pathloss. Each coverage class may have one or more associated subcarriers of a set of subcarriers in a narrowband bandwidth, and random access messages may be transmitted using the associated subcarrier(s) for the coverage class of a UE. In some examples, different coverage classes may have different numbers of redundant transmissions of a random access message, which may be based on channel conditions associated with a particular coverage class. A UE, based on a measured channel condition, may determine a coverage class and select a subcarrier based on the determined coverage class.

    MULTIPLE TRANSMISSION TIME INTERVAL COORDINATION WITH TIME DIVISION DUPLEXING

    公开(公告)号:CA3126260A1

    公开(公告)日:2017-11-16

    申请号:CA3126260

    申请日:2017-05-12

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

    MULTIPLE TRANSMISSION TIME INTERVAL COEXISTENCE

    公开(公告)号:CA3019960A1

    公开(公告)日:2017-11-16

    申请号:CA3019960

    申请日:2017-05-12

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices for wireless communication are described. Different transmission time interval (TTI) durations may be supported and configured to coexist with one another. A set of TTIs with a relatively short duration may overlap in time with longer duration TTIs. Boundaries of TTIs with a relatively short duration may be configured to align with boundaries of relatively longer duration TTIs. For example, TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Two-symbol period TTIs may align with or be embedded within slot-duration TTIs, which, in turn, may align with or be embedded within a subframe. In some examples, one or more symbol periods of a subframe may be designated as a gap between two-symbol TTIs within the subframe, or such symbols may be merged with a two-symbol TTI within the subframe.

    MULTIPLE TRANSMISSION TIME INTERVAL COORDINATION WITH TIME DIVISION DUPLEXING

    公开(公告)号:CA3019350A1

    公开(公告)日:2017-11-16

    申请号:CA3019350

    申请日:2017-05-12

    Applicant: QUALCOMM INC

    Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

    TECHNIQUES FOR ACKNOWLEDGING SCHEDULING REQUEST TRANSMISSIONS ON A CONTENTION-BASED PHYSICAL UPLINK SHARED CHANNEL

    公开(公告)号:CA3013587A1

    公开(公告)日:2017-09-14

    申请号:CA3013587

    申请日:2017-01-13

    Applicant: QUALCOMM INC

    Abstract: A method for wireless communication at a user equipment (UE) includes transmitting a scheduling request (SR) transmission in a radio frequency spectrum band on at least one resource of a contention-based physical uplink shared channel (PUSCH), and monitoring the radio frequency spectrum band for a response to the SR transmission. A method for wireless communication at a network access device includes receiving, from a UE, a SR transmission in a radio frequency spectrum band on at least one resource of a contention-based PUSCH; determining an availability of uplink resources allocable to the UE; selecting, based at least in part on the determined availability of uplink resources, the response to the SR transmission; and transmitting in the radio frequency spectrum band, to the UE, the selected response to the SR transmission. The response to the SR transmission includes an uplink grant or an acknowledgement of the SR transmission.

    Low latency group acknowledgements
    100.
    发明专利

    公开(公告)号:AU2016211711A1

    公开(公告)日:2017-07-06

    申请号:AU2016211711

    申请日:2016-01-26

    Applicant: QUALCOMM INC

    Abstract: Certain aspects of the present disclosure provide techniques that may be used for low latency communications. For example, aspects allow a single group acknowledgement to be used to acknowledge a plurality of low latency transmissions. An exemplary method generally includes receiving, from a base station, a plurality of downlink channel transmissions, wherein each of the downlink channel transmissions is sent using a first transmission time interval (TTI) that is reduced relative to a legacy TTI and providing, in a single uplink channel transmission sent using a second TTI that is larger than the first TTI, a group acknowledgement indicating whether or not the downlink channel transmissions were successfully received by a UE.

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