Inter-stream interference measurement for non-linear precoding techniques

    公开(公告)号:US12126418B2

    公开(公告)日:2024-10-22

    申请号:US18002797

    申请日:2020-09-02

    摘要: Methods, systems, and devices for wireless communications are described. In some systems, a base station may configure multiple types of resources at a user equipment (UE) for interference management processing at the UE in examples in which the base station employs a non-linear precoding technique. The multiple types of resources configured by the base station may include a first resource type configured for measuring channel gain at the UE, a second resource type configured for measuring non-linear interference at the UE arising from lower-layer data streams, and a third resource type configured for measuring linear interference at the UE arising from higher-layer data streams. The base station may transmit one or more reference signals to the UE over each of the multiple resource types and the UE may determine both a non-linear interference measurement and a linear interference measurement based on receiving the reference signals.

    Assignment indexes for dynamic feedback

    公开(公告)号:US12074825B2

    公开(公告)日:2024-08-27

    申请号:US18152085

    申请日:2023-01-09

    IPC分类号: H04L5/00 H04L1/1812

    CPC分类号: H04L5/0055 H04L1/1812

    摘要: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may order assignment indicator values for transmissions for use by feedback information in a feedback message. The UE may receive, during a monitoring occasion, a first control information over a first serving cell and a second control information over a second serving cell, where each control information schedules a respective transmission for a scheduled serving cell. The UE may order assignment indicator values for the transmissions based on indexes associated with the first and second serving cells (e.g., scheduling serving cells), an index associated with the scheduled serving cell, a start time of the transmissions, or some combination thereof, among other examples. The assignment indicator values may be associated with hybrid automatic repeat request acknowledgement (HARQ/ACK) feedback, such that the UE may use the assignment indicator values to construct and transmit a feedback message.

    Control channel design for shared wireless communications

    公开(公告)号:US12047975B2

    公开(公告)日:2024-07-23

    申请号:US18330157

    申请日:2023-06-06

    IPC分类号: H04W72/23 H04L5/00 H04W16/14

    摘要: Methods, systems, and devices for wireless communication are described that may enable a user equipment (UE) to monitor a shared spectrum to receive control signaling and data transmissions associated with different transmission time intervals (TTIs). For example, a base station may communicate with a UE according to a first transmission mode during a first, shortened TTI. The base station may transmit a downlink control channel for a shortened TTI based on a subset of a number of blind decodes or control channel elements. Additionally, a downlink control channel for a shortened TTI may contain grants for multiple TTIs. In some cases, the base station may transmit a signaling to the UE via a reference signal, downlink control channel, or radio resource control which may indicate a change from the shortened-TTI transmission mode to a transmission mode with a TTI duration that is longer than the first, shortened TTI duration.

    Radio resource control action time

    公开(公告)号:US11997669B2

    公开(公告)日:2024-05-28

    申请号:US17359489

    申请日:2021-06-25

    摘要: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a radio resource control (RRC) reconfiguration message from a base station including a configuration for communicating with the base station, and the base station may transmit an RRC reconfiguration complete message to the base station (e.g., in response to the RRC reconfiguration message). The UE may then apply the configuration in the RRC reconfiguration message for communicating with the base station after transmitting the RRC reconfiguration complete message. That is, the UE may delay application of the configuration in the RRC reconfiguration message until after the UE transmits the RRC reconfiguration complete message. Using these techniques, ambiguity between the base station and the UE on when the configuration is applied by the UE may be minimized, resulting in improved throughput and reduced latency in a wireless communications system.

    Flexible handling of search space sets for control resource sets (coresets) configured with multiple transmission configuration indicator (TCI) states

    公开(公告)号:US11963190B2

    公开(公告)日:2024-04-16

    申请号:US17482235

    申请日:2021-09-22

    IPC分类号: H04W72/23 H04W72/1273

    CPC分类号: H04W72/23 H04W72/1273

    摘要: Methods, systems, and devices for wireless communications are described. In some systems, a base station may configure a user equipment (UE) with a control resource set (CORESET) with multiple transmission configuration indicator (TCI) states. The UE may determine TCI state configurations for one or more search space sets associated with the CORESET, where different search space sets associated with the CORESET may have different TCI state configurations. For example, each search space set may be associated with a first TCI state of the CORESET, a second TCI state of the CORESET, or both. The UE may monitor for downlink control information (DCI) messages in physical downlink control channel (PDCCH) candidates of the search space sets according to respective TCI state configurations for the search space sets. Such a configuration may flexibly support a base station transmitting DCI using different TCI state configurations in PDCCH candidates of a single CORESET.

    Space division multiplexing of reference signals

    公开(公告)号:US11937226B2

    公开(公告)日:2024-03-19

    申请号:US17485097

    申请日:2021-09-24

    摘要: Methods, systems, and devices for wireless communication are described to support raw channel estimation. A base station may determine a transmission pattern for a set of multiple transmit beams, where each transmit beam may be associated with a respective reference signal, and may signal the transmission pattern to a user equipment (UE). The transmission pattern may indicate one or more sets of transmit beams, where each set may include two or more transmit beams used for concurrent transmission of respective reference signals. The set of multiple transmit beams may be associated with at least two synchronization signal blocks (SSBs), and the concurrently transmitted reference signals may each be associated with a respective orthogonal cover code. The UE may monitor for concurrently transmitted reference signals based on the transmission pattern, perform associated beamformed measurements, and transmit a channel state information report to the base station.

    Techniques for counting a scheduling request periodicity

    公开(公告)号:US11917664B2

    公开(公告)日:2024-02-27

    申请号:US17399887

    申请日:2021-08-11

    摘要: Methods, systems, and devices for wireless communication are described to support reducing conflicts with between scheduling request opportunities and downlink resources. A base station may configure a user equipment (UE) with a scheduling request periodicity and offset for identifying scheduling request opportunities. The UE and base station may apply the periodicity and the offset to a first subset of time periods of a set of multiple time periods, where the first subset of time periods may include scheduling request opportunities that do not overlap with resources allocated for downlink transmissions. Based on applying the offset and periodicity to the first subset of time periods, the UE may identify a scheduling request opportunity, in a first time period of the first subset, and may transmit a scheduling request to the base station via the scheduling request opportunity.