PRIMARY CELL AND PRIMARY SECONDARY CELL MANAGEMENT FOR CELLS WITHIN AN ACTIVATED CELL SET

    公开(公告)号:US20220182894A1

    公开(公告)日:2022-06-09

    申请号:US17112931

    申请日:2020-12-04

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for using layer one (L1) or layer two (L2) signaling to indicate a primary cell (PCell) or primary secondary cell (PSCell) to a user equipment (UE). The use of L1 or L2 signaling to indicate a PCell or PSCell may be referred to as L1 or L2 mobility and may lower the latency at the UE associated with transitioning to communicating with the PCell or PSCell. A UE may receive radio resource control (RRC) signaling from a base station indicating a set of cells configured for L1 or L2 mobility and indicating a list of candidate cells for a PCell or PSCell. The UE may then receive L1/L2 signaling from the base station identifying the PCell or indicating activation of the PSCell.

    USER EQUIPMENT GROUP SELECTION FOR DIRECT LINK OR SIDELINK PACKET TRANSMISSION IN BROADCAST

    公开(公告)号:US20220030519A1

    公开(公告)日:2022-01-27

    申请号:US17379648

    申请日:2021-07-19

    Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify one or more user equipments (UEs) subscribed to receive broadcast transmissions. The base station may determine a first subset of the UEs is to receive broadcast transmissions via a direct link and a second subset of the UEs is to receive the packets from the broadcast transmission via a sidelink connection based on selection criteria. The base station may transmit an indication that the broadcast transmissions are to be received via either the direct link or sidelink connection to at least one of the first subset of UEs or the second subset of UEs. The base station may transmit the broadcast transmissions to the first subset of UEs via direct links, and the first subset of UEs may transmit the broadcast transmissions to one or more other UEs via sidelink connections.

    TECHNIQUES FOR ENHANCED COVERAGE SEMI-PERSISTENT SCHEDULING

    公开(公告)号:US20210352701A1

    公开(公告)日:2021-11-11

    申请号:US17234128

    申请日:2021-04-19

    Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor a unicast channel for a first downlink transmission from a base station using a first semi-persistent scheduling (SPS) configuration. The UE may receive downlink control information (DCI) from the base station indicating a second SPS configuration associated with a different coverage level than the first SPS configuration. In some cases, the DCI may be DCI that is common to a set of UEs. Here, the DCI may indicate the second SPS configuration and the UE may identify a set of parameters associated with the second SPS configuration based on a radio resource control (RRC) message received prior to the DCI. Based on receiving the indication of the second SPS configuration, the UE may monitor the unicast channel for a second downlink transmission from the base station using the second SPS configuration.

    BEAM REFINEMENT TECHNIQUES FOR RANDOM ACCESS COMMUNICATIONS

    公开(公告)号:US20210329691A1

    公开(公告)日:2021-10-21

    申请号:US17231805

    申请日:2021-04-15

    Abstract: Methods, systems, and devices for wireless communications are described in which a base station and a user equipment (UE) may perform beam refinement within a random access procedure. A UE may transmit a random access request to the base station and, in response thereto, the base station may transmit a control channel order to the UE that indicates to transmit a modified random access request. Resources for the modified random access request may be determined based on the random access request, the control channel order, configured resources, or combinations thereof. The base station may monitor for the modified random access request using different beamforming parameters and determine a refined beam for a subsequent transmission in the random access procedure. The base station may use the refined beam to transmit a random access response to the UE, and complete the access procedure.

    TWO-STAGE FEEDBACK PROCEDURES
    177.
    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.

    CONTROL SIGNALING TECHNIQUES FOR SIDELINK COMMUNICATIONS

    公开(公告)号:US20210212044A1

    公开(公告)日:2021-07-08

    申请号:US17120560

    申请日:2020-12-14

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for determining shared resources associated with one or more user equipments (UEs) for sidelink communications, including control resources and data resources. A first UE may determine a first set of control resources in a first frequency band corresponding to a first group of UEs including the first UE. The first UE may transmit a sidelink request to reserve a subset of data resources to a second UE in the first group of UEs. The first UE may monitor for one or more sidelink responses indicating a positive sidelink response to the sidelink request, a negative sidelink response to the sidelink request, or both. The first UE may determine, based on monitoring for the one or more sidelink responses, whether to transmit a sidelink confirmation indicating a reservation of the data resources to the second UE.

    CONTROL AND DATA MULTIPLEXING FOR RESOURCES

    公开(公告)号:US20210212043A1

    公开(公告)日:2021-07-08

    申请号:US17097624

    申请日:2020-11-13

    Abstract: Methods, systems, and devices for wireless communications are described. A set of user equipments (UEs) may communicate with each other on communication links using data resources from a pool of shared resources. The UEs may be configured to multiplex control resources with data resources of a shared resource pool. In some cases, a UE may communicate, in control resources, control signaling to reserve data resources of a shared resource pool. After transmitting the request, the UE may communicate data in one or more data resources. The UE may communicate the data using transmission components while concurrently processing control signaling using other components.

    DISTRIBUTED SIDELINK RESOURCE ALLOCATION

    公开(公告)号:US20210160820A1

    公开(公告)日:2021-05-27

    申请号:US17095627

    申请日:2020-11-11

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for determining shared resources associated with one or more user equipments (UEs) for sidelink communications, including control resources and data resources. A first UE may transmit a sidelink request to reserve a subset of data resources to a second UE, and may monitor for one or more sidelink responses indicating a positive sidelink response to the sidelink request, a negative sidelink response to the sidelink request, or both. The second UE may transmit a positive sidelink response if it is available for a data transmission. A third UE may transmit a negative sidelink response if it objects to the data transmission. The first UE may determine, based on monitoring for the one or more sidelink responses, whether to transmit a sidelink confirmation indicating a reservation of the subset of the data resources to the second UE.

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