Cross-division duplex signaling
    61.
    发明授权

    公开(公告)号:US12244544B2

    公开(公告)日:2025-03-04

    申请号:US17787691

    申请日:2021-09-03

    Applicant: APPLE INC.

    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for signaling cross-division duplex configurations. One of the methods includes identifying, by a first device and for a first link with a second device, a switch in a first bandwidth part to a second bandwidth part for the first link, the first link associated with a second link having a third bandwidth part; determining, by the first device, whether a bandwidth band between the second bandwidth part and the third bandwidth part satisfies a threshold guard band; and selectively determining to maintain the third bandwidth part for the second link or to switch the third bandwidth part to a fourth bandwidth part for the second link using a result of the determination whether the bandwidth band between the second bandwidth part and the third bandwidth part satisfies the threshold guard band.

    Systems and methods for beam failure recovery enhancement

    公开(公告)号:US12166559B2

    公开(公告)日:2024-12-10

    申请号:US17593294

    申请日:2021-06-07

    Applicant: APPLE INC.

    Abstract: Systems and methods for beam failure recovery (BFR) are disclosed herein. A user equipment (UE) receives downlink (DL) reference signal(s) on corresponding beam(s) from a base station. The UE performs beam failure detection (BFD) on such beams used for user data to determine whether a beam failure has occurred, and candidate beam detection (CBD) on such beams not used for user data to identify candidate beams for recovering from the beam failure. The BFD and the CBD are based on both uplink (UL) channel performance considerations and DL channel performance considerations, as determined using the DL reference signal(s), such that a beam failure may be determined in the UL, the DL, or both, and a candidate beam may be identified for UL, DL, or both. The UE sends a beam failure recovery request BFRQ with this information to the base station, and the system changes beams accordingly.

    PRIORITIZATION MECHANISM FOR SRS ANTENNA PORT SWITCHING

    公开(公告)号:US20240405827A1

    公开(公告)日:2024-12-05

    申请号:US18697335

    申请日:2021-10-08

    Applicant: APPLE INC.

    Abstract: Systems and methods for networks having user equipment (UE) that can perform measurement/reporting of received signals and a sounding reference signal (SRS) transmission that is part of an SRS antenna port switching procedure are described herein. In some circumstances, the measurement and the SRS antenna port switching procedure overlap on one or more symbols. Across various embodiments, the UE prioritizes one of the measurement and the SRS antenna port switching procedure based on one or more of a scheduling type (periodic, semi-persistent, aperiodic) of the measurement, a scheduling type of a channel state information (CSI) report for a measurement result for the measurement, and/or a scheduling type of the SRS transmission of the SRS antenna port switching procedure. Networks that avoid overlaps by scheduling SRS transmissions away from UE signal measurements, or transmissions of signals to be measured away from UE SRS antenna port switching procedures, are also described.

    Systems and methods for user equipment (UE) selection from among asymmetric uplink (UL) antenna panels

    公开(公告)号:US12155439B2

    公开(公告)日:2024-11-26

    申请号:US17593797

    申请日:2020-08-05

    Applicant: Apple Inc.

    Abstract: An example method for wireless communication includes: transmitting to a base station, via a user device: (1) a capability report for each of a plurality of antenna panels; and (2) an initial antenna panel index; receiving, from the base station, configuration information corresponding to each antenna panel of the plurality of antenna panels; selecting a first antenna panel for a first uplink (UL) transmission to the base station, wherein the first antenna panel corresponds to the antenna panel with the initial antenna panel index; selecting first configuration information corresponding to the selected first antenna panel; and transmitting the first UL transmission to the base station, using the selected first antenna panel and the selected first configuration information. In other aspects, rather than initially receiving configuration information corresponding to each antenna panel, the user device may receive the configuration information for each panel as it is selected for an UL transmission.

    Systems and methods for robust CSI feedback

    公开(公告)号:US12149306B2

    公开(公告)日:2024-11-19

    申请号:US18359103

    申请日:2023-07-26

    Applicant: APPLE INC.

    Abstract: Systems and methods disclosed herein use channel state information (CSI) reports from a user equipment (UE) having additional CSI beyond CSI directly derived according to a current MIMO configuration between a base station and the UE. In some embodiments, a channel quality indicator (CQI) according to a selected layer of a plurality of layers used to receive the MIMO transmission as determined relative to the MIMO transmission is reported. In some embodiments, a precoding matrix indicator (PMI) according to a selected layer of a plurality of layers useable to receive rank 1 transmissions is reported along with a CQI determined according to that layer, or according to a layer used to receive the MIMO transmission as determined relative to the MIMO transmission. In some embodiments, a base station configures a UE to report more fulsome CSI according to each of a plurality of ranks.

    Configuration and Capability Signaling for Enhanced Positioning Techniques in Cellular Systems

    公开(公告)号:US20240284382A1

    公开(公告)日:2024-08-22

    申请号:US18456928

    申请日:2023-08-28

    Applicant: Apple Inc.

    CPC classification number: H04W64/00 H04L5/0051

    Abstract: Apparatuses, systems, and methods for enhanced positioning techniques using configuration and capability signaling in cellular systems. A method may include reporting, to a network node, an indication of one or more user equipment (UE) capability parameters associated with a processing procedure for positioning reference signal (PRS) bandwidth aggregation. The method may include receiving, from the network node and associated with the reported one or more UE capability parameters, a configuration for the processing procedure which supports multiple positioning frequency layer (multi-PFL) processing for aggregation of PRS resources across a plurality of PFLs and further supports one or more PFL groups comprising the plurality of PFLs to be configured on one or more component carriers (CCs). Additionally, respective PRS resources in respective PFL groups may share one or more common parameters and the method may further include performing, based on the received configuration, the processing procedure.

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