TECHNIQUES FOR NETWORK-INITIATED PANEL ACTIVATION OR DEACTIVATION AT A USER EQUIPMENT (UE)

    公开(公告)号:US20240007149A1

    公开(公告)日:2024-01-04

    申请号:US18252704

    申请日:2021-01-28

    CPC classification number: H04B7/0404 H04B7/0602

    Abstract: Methods, systems, and devices for wireless communications are described. In some example, a base station may facilitate panel activation or deactivation at a user equipment (UE). For example, a UE including a set of panels may establish a connection with a base station. The base station may transmit an activation configuration message activating or deactivating a subset of panels at the UE. Based on the activation configuration message, the UE may select one or more panels from the set of panels and transmit an uplink transmission to the base station using the selected one or more panels.

    NEW BEAM INDICATION REPORTING FOR MULTI-BEAM OPERATION

    公开(公告)号:US20230396304A1

    公开(公告)日:2023-12-07

    申请号:US18249529

    申请日:2020-12-16

    CPC classification number: H04B7/0695 H04W74/02

    Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques at a user equipment (UE) provide for indicating multiple beams to a base station for communications with the base station after detecting a beam failure. Using these techniques, the UE may rely on multi-beam operation to recover communications with the base station. The UE may transmit a random-access preamble indicating a first beam for communications with the base station, and the UE may transmit a control element in a data channel indicating a second beam for communications with the base station. In some cases, the messages used to carry the indications of the multiple beams may be based on a type of random-access procedure used to recover communications (e.g., a contention-based random-access (CBRA) procedure, a contention-free random-access (CFRA) procedure, or a two-step random-access procedure).

    COMMON BEAM INDICATION TECHNIQUES FOR MULTI-BEAM OPERATION

    公开(公告)号:US20230396301A1

    公开(公告)日:2023-12-07

    申请号:US18252139

    申请日:2020-12-10

    CPC classification number: H04B7/0628 H04L5/0053 H04B7/0408 H04B7/0417

    Abstract: This disclosure provides systems, methods and apparatus for multi-beam operation at a user equipment (UE). In some aspects, a user equipment (UE) may transmit a beam report indicating a number of simultaneous transmit beams supported by the UE. The UE may receive a common beam indication for multiple TCI states. The UE may select at least one TCI state as an uplink component for a common beam and may communicate with a base station (BS) using the common beam. The UE may receive control signaling enabling a group-based beam reporting mode at the UE and an indication to apply a group-based beam reporting configuration for uplink beam reporting. The UE may selectively enable or disable the group-based beam reporting configuration. The UE may report multiple reference signal resource indices for multiple reference signals. The UE may transmit the reference signals using multiple spatial domain transmit filters.

    QUASI-COLLOCATION (QCL) ASSUMPTION OF SIMULTANEOUS PHYSICAL UPLINK CONTROL CHANNEL (PUCCH) AND PHYSICAL UPLINK SHARED CHANNEL (PUSCH)

    公开(公告)号:US20230308160A1

    公开(公告)日:2023-09-28

    申请号:US18000274

    申请日:2020-07-30

    CPC classification number: H04B7/06968 H04W72/20 H04W72/56

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for wireless communications. In one aspect, a user equipment (UE) may receive, from a base station, a configuration message indicating a first beam associated with an uplink control transmission and downlink control information (DCI) indicating a second beam associated with the uplink data transmission. The UE may select the first beam or the second beam based on an overlap in time between the uplink control transmission and the uplink data transmission. The base station may identify the first beam or the second beam based on the overlap between the uplink control transmission and the uplink data transmission. The UE may transmit, and a base station may receive, at least a portion of the uplink control transmission and at least a portion of the uplink data transmission using the selected first beam or second beam.

    UPDATE OF TRANSMISSION CONFIGURATIONS FOR JOINT DOWNLINK AND UPLINK TRANSMISSION CONFIGURATION INDICATOR (TCI) STATES

    公开(公告)号:US20230300851A1

    公开(公告)日:2023-09-21

    申请号:US18006353

    申请日:2020-09-09

    CPC classification number: H04W72/231 H04L5/0094

    Abstract: This disclosure provides systems, methods, and apparatuses for updating a joint downlink and uplink transmission configuration indicator (TCI) state for a communication channel or a reference signal. In one aspect, abase station (BS) may indicate, to a user equipment (UE), a joint downlink and uplink TCI state for a communication channel or a reference signal. The BS may indicate a usage, transmission types, or transmission resources associated with the joint downlink and uplink TCI state. Accordingly, the UE may associate the joint downlink and uplink TCI state with a channel or reference signal, as indicated by the BS. This enables to the UE to utilize a common beam indicated by the joint downlink and uplink TCI state. As a result, the UE and the BS may reduce signaling and network overhead by using a single TCI to indicate properties of a common beam for both downlink and uplink.

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