Beam failure recovery in a secondary cell

    公开(公告)号:US11431396B2

    公开(公告)日:2022-08-30

    申请号:US16947915

    申请日:2020-08-24

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit a beam failure recovery scheduling request (BFR-SR) to a primary cell or a primary secondary cell base station based at least in part on detecting a beam failure associated with a secondary cell (SCell) link between the UE and an SCell base station. The UE may start a timer based at least in part on transmitting the BFR-SR. The UE may retransmit the BFR-SR based at least in part on the timer expiring prior to the UE receiving a response to acknowledge the BFR-SR and schedule transmission of a medium access control (MAC) control element (MAC-CE) including information to recover from the beam failure and/or the timer expiring prior to the UE transmitting the MAC-CE. Numerous other aspects are provided.

    Predictive scheduling for mm-wave based CV2X

    公开(公告)号:US11425726B2

    公开(公告)日:2022-08-23

    申请号:US17186876

    申请日:2021-02-26

    Abstract: Methods, apparatuses, and computer-readable mediums for wireless communication are disclosed by the present disclosure. In an example, a first wireless communication device may transmit, to a relay node, a first predicted motion of a first vehicle including the first wireless communication device having a first established communication channel with the relay node. The first wireless communication device may receive an indication that the first predicted motion will trigger a communication condition for the first vehicle and a second wireless communication device having a second established communication channel with the relay node, the indication including reserved resources for a third communication channel between the first wireless communication device and the second wireless communication device. The first wireless communication device may communicate with the second wireless communication device using the reserved resources for a third communication channel without performing a random access procedure with the second wireless communication device.

    Default spatial relation determination for a sounding reference signal or an uplink control channel beam

    公开(公告)号:US11425701B2

    公开(公告)日:2022-08-23

    申请号:US17073935

    申请日:2020-10-19

    Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a control resource set (CORESET) is not configured for an active downlink bandwidth part of a component carrier (CC) of the UE. The UE may determine that a transmission configuration indication (TCI) state is not activated for a physical downlink shared channel (PDSCH) of the active downlink bandwidth part of the CC. The UE may determine a default spatial relation for an uplink control channel or uplink signal for the CC based at least in part on determining that the CORESET is not configured for the active downlink bandwidth part of the CC and that the TCI state is not activated for the PDSCH of the active downlink bandwidth part of the CC. Numerous other aspects are provided.

    Sidelink reservation across frequency bands

    公开(公告)号:US11425609B2

    公开(公告)日:2022-08-23

    申请号:US16896881

    申请日:2020-06-09

    Abstract: Aspects relate to mechanisms for sidelink reservation across frequency bands. In some examples, a sidelink device may be configured to communicate over a first frequency band (e.g., a sub-6 gigahertz frequency band) and a second frequency band (e.g., a millimeter wave frequency band) with one or more other sidelink devices. The sidelink device may further be configured to perform cross-link resource reservation for a sidelink transmission in which a resource reservation message transmitted on the first frequency band indicates reserved resources within the second frequency band for the sidelink transmission. The sidelink device may then transmit sidelink control information (SCI) within a sidelink control channel on the second frequency band and user data traffic corresponding to the SCI within a sidelink data channel on the second frequency band.

    TECHNIQUES FOR ADAPTIVE QUANTIZATION LEVEL SELECTION IN FEDERATED LEARNING

    公开(公告)号:US20220245527A1

    公开(公告)日:2022-08-04

    申请号:US17164685

    申请日:2021-02-01

    Abstract: Methods, systems, and devices for wireless communications are described. To support adaptive quantization level selection in federated learning, a server may cause a base station to transmit an indication of a quantization level for a user equipment (UE) to use to compress gradient data output by a machine learning model. For example, the server may determine, for each UE of a set of UEs, a respective quantization level for respective gradient data that is output by a respective machine learning model at each UE. The server may transmit, to each UE via one or more base stations, first information for use as an input in the respective machine learning model and an indication of the respective quantization level. A UE may receive the first information and the indication and may transmit, to the server, compressed gradient data that is generated based on (e.g., using) the indicated quantization level.

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