TRAFFIC-AWARE CHANNEL STATE INFORMATION FEEDBACK

    公开(公告)号:US20210282145A1

    公开(公告)日:2021-09-09

    申请号:US17249404

    申请日:2021-03-01

    Abstract: Wireless communication devices, systems, and methods relate to selecting transmission parameters that optimize a dimension (e.g., time, frequency, and/or spatial) under a set of constraints. A UE may receive a resource allocation mode indication and a traffic parameter indication from a BS. The resource allocation mode indication informs the UE to optimize along a time dimension, a frequency dimension, and/or a spatial domain. The traffic parameter indication informs the UE what constraints to consider for the transmission parameters. The UE may use this information upon receipt of a reference signal in selecting transmission parameters based on the received reference signal, resource allocation mode indication, and traffic parameter indication. The resource allocation mode may correspond to optimization within a single slot or across multiple slots. Once selected, the UE may transmit the transmission parameters to the BS for use in sending the message to the UE.

    TWO-STAGE FEEDBACK PROCEDURES
    404.
    发明申请

    公开(公告)号:US20210266886A1

    公开(公告)日:2021-08-26

    申请号:US17181803

    申请日:2021-02-22

    Abstract: Methods, systems, and devices for wireless communications are described. Techniques are described for providing additional feedback about a channel as part of a feedback procedure. Feedback information associated with a feedback procedure may include two stages of feedback information. Each stage of feedback information may include a different type of information. A first stage may include acknowledgements or negative acknowledgements for each feedback process supported. A second stage may include additional feedback information related to any downlink transmission that was not received successfully and thus included a negative acknowledgement in the first stage. Additionally, or alternatively, the second stage may include additional feedback information related to any downlink transmission that was received successfully and thus included an acknowledgement in the first stage. Techniques are also described for handling the variable size of the feedback information included in the two stages.

    UPLINK CHANNEL PRIORITIZATION FOR PERIODIC HIGH PRIORITY UPLINK COMMUNICATIONS

    公开(公告)号:US20210258981A1

    公开(公告)日:2021-08-19

    申请号:US17174187

    申请日:2021-02-11

    Abstract: Methods, systems, and devices for wireless communications are described that provide for prioritization of uplink transmissions in the event that periodic configured uplink transmissions of a first priority have overlapping time or frequency resources with other uplink transmissions of a second priority, based on a collision resolution configuration. The collision resolution configuration may be preconfigured at a transmitting device such as a user equipment (UE) or indicated to the UE from a network node such as a base station. In some examples, the collision resolution configuration may indicate how the UE is to handle collisions between periodic high priority uplink transmissions (e.g., uplink control channel transmissions configured according to a semi-persistent scheduling (SPS) configuration) and lower priority uplink transmissions, which may be configured uplink transmissions or dynamically granted uplink transmissions.

    CODEBOOK CONSTRUCTION FOR ENHANCED HYBRID AUTOMATIC REPEAT REQUEST FEEDBACK

    公开(公告)号:US20210258102A1

    公开(公告)日:2021-08-19

    申请号:US17177170

    申请日:2021-02-16

    Abstract: Methods, systems, and devices for wireless communications are described to support codebook construction for enhanced hybrid automatic repeat request (HARQ) feedback. A user equipment (UE) may be configured to support a first type of HARQ feedback and a second type of HARQ feedback that includes additional information relative to the first type. A base station may transmit multiple downlink transmissions to the UE, where a first set of the downlink transmissions may be associated with the first type of HARQ feedback and a second set of the downlink transmissions may be associated with the second type of HARQ feedback. The UE may attempt to decode the downlink transmissions and may generate respective feedback for the downlink transmissions. The UE may construct a single HARQ codebook to multiplex the different types of HARQ feedback for the downlink transmissions and may transmit the HARQ codebook to the base station.

    Power allocation for subband precoding

    公开(公告)号:US11076409B2

    公开(公告)日:2021-07-27

    申请号:US16523103

    申请日:2019-07-26

    Abstract: Techniques are described herein for allocating transmit power between precoding resource groups (PRGs) and/or transmit chains of a user equipment (UE) to reduce the amount of total transmit power that is unused. The UE may determine a set of precoding scaling factors for each PRG to efficiently allocate a total transmit power between the PRGs using a two-stage approach. During a first stage, the UE may determine PRG-specific precoding scaling factors for each PRG associated with an uplink transmission. During a second stage, the UE may determine a residual precoding scaling factor to apply to all the PRGs associated with the uplink transmission and determine overall precoding scaling factors for each PRG. The second stage may be configured to refine the scaling factors determined in the first stage such that at least some of the unused transmit power is allocated to at least one of the PRGs or transmit chains.

    Temporary power adjustment indication for uplink transmissions

    公开(公告)号:US11076358B2

    公开(公告)日:2021-07-27

    申请号:US16544456

    申请日:2019-08-19

    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify one or more first user equipments (UEs) that have been configured for grant-free transmissions on an allocation of resources. In some cases, the base station may then schedule an uplink transmission for a second UE on resources that overlap the allocation of resources. Accordingly, the base station may transmit a power adjustment indication (PAI) to the one or more first UEs to adjust a transmit power for uplink transmissions on the overlapping resources. In some cases, the PAI may include an indication of frequency-domain resources for the power adjustment indicated in the PAI, a specified time duration for the power adjustment indicated in the PAI, an indication of specific uplink transmissions to which the transmit power adjustment is to be applied, or a combination thereof.

    MULTIPLE DOWNLINK CONTROL INFORMATION (DCI) MESSAGE HANDLING FOR MULTIPLE CONTROL RESOURCE SET (CORESET) GROUPS

    公开(公告)号:US20210227521A1

    公开(公告)日:2021-07-22

    申请号:US17224918

    申请日:2021-04-07

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for multiple downlink control information (DCI) message handling for multiple control resource set (CORESET) groups. In one aspect, a user equipment (UE) may provide separate or joint feedback for data messages received from different CORESET groups. In some examples, the UE may be configured with code block group (CBG)-based transmissions for a component carrier (CC) or a CORESET group in a CC. If implementing a dynamic codebook, the UE may track separate transport block (TB)-based and CBG-based downlink assignment indexes (DAIs) for each CORESET group or may track joint TB-based and CBG-based DAIs across the set of CORESET groups to handle the CBG configuration. Additionally, or alternatively, if implementing a semi-static codebook, the UE may apply skipping rules across the set of CORESET groups or separately for each CORESET group to reduce signaling overhead.

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