Beamforming Measurements Based on PSS/SSS

    公开(公告)号:US20210160747A1

    公开(公告)日:2021-05-27

    申请号:US17164561

    申请日:2021-02-01

    Applicant: Apple Inc.

    Abstract: Beamforming measurement techniques based on PSS/SSS are disclosed. An apparatus of a user equipment (UE) can include processing circuitry configured to decode a configuration message from a source serving cell, the configuration message indicating signal selection criteria for cell measurement reporting. A synchronization signal (SS) burst set associated with one or more transmission/reception points (TRPs) within a neighboring cell is decoded, the SS burst set including a plurality of SS blocks. A cell bcamforming measurement signal associated with the neighboring cell is generated, based on signal measurements of the SS blocks and the signal selection criteria. A radio resource management (RRM) measurement report message is encoded for transmission to the serving cell, the measurement report message including the cell beamforming measurement signal. A handover command message for initiating a handover to the neighboring cell is decoded, the handover command based on the cell beamforming measurement signal.

    Network signaling for radio resource management enhancement in high speed train (HST) scenarios

    公开(公告)号:US12289610B2

    公开(公告)日:2025-04-29

    申请号:US17437787

    申请日:2021-04-01

    Applicant: Apple Inc.

    Abstract: A network may transmit either beam deployment information or beam number information to a user equipment (UE) carried on a train and configured for operation in the millimeter wave band. The deployment information may include deployment related distance parameters or azimuth angle spread parameters. The beam number information may indicate a number of network beams associated with a current cell. The UE may determine a number of UE receive beams based on deployment information or the network-indicated number of network beams. The UE may transmit feedback to the network, indicating the number of UE receive beams. Alternatively, the network may send a configuration message indicating a first number of UE receive beams to the UE, which the UE may treat as an upper bound or lower bound in its determination of a desired number of UE receive beams. The UE may transmit the desired number to the network.

    Methods and apparatus for PRACH resource determination and RA-RNTI computation in wireless communication

    公开(公告)号:US12284680B2

    公开(公告)日:2025-04-22

    申请号:US17456304

    申请日:2021-11-23

    Applicant: Apple Inc.

    Abstract: Aspects herein relate to wireless devices, circuits, and methods for determining a PRACH resource mapping comprising a starting symbol position within a reference slot, wherein the starting symbol position is determined based, at least in part, on a subcarrier spacing configuration of PRACH resources of a wireless network that a wireless device is operating on; and using the radio to transmit a RACH preamble and an associated RA-RNTI via the determined PRACH resource mapping. Further aspects herein relate to devices, circuits, and methods for using a modified RA-RNTI for transmission or reception of data over a wireless network, wherein the wireless network has a subcarrier spacing configuration of PRACH resources, wherein a size of the subcarrier spacing configuration of the PRACH resources causes out-of-range RA-RNTI values to be calculated using a legacy RA-RNTI equation in an unmodified form, wherein the range of permissible RA-RNTI values is from 0 to 216−1.

    Enhanced PHR reporting in support of UE antenna scaling

    公开(公告)号:US12273827B2

    公开(公告)日:2025-04-08

    申请号:US17904808

    申请日:2021-09-24

    Applicant: APPLE INC.

    Abstract: The present disclosure relates to devices, apparatuses, and methods for enhanced PHR reporting in support of UE antenna scaling. A wireless device, which comprises at least one antenna array each comprising a plurality of antenna elements may perform antenna scaling by activating or deactivating at least one of the plurality of antenna elements (with corresponding RF chains) of one or more antenna arrays. The wireless device may generate a power headroom (PHR) report based at least on a difference between beamforming gains obtained after the antenna scaling and before the antenna scaling. The wireless device may then send the PHR report to a base station in communication with the wireless device.

    Enhancements to support TRP specific beam failure recovery

    公开(公告)号:US12273176B2

    公开(公告)日:2025-04-08

    申请号:US17906225

    申请日:2021-09-24

    Applicant: Apple Inc.

    Abstract: A user equipment (UE) is configured to establish a connection to a base station, wherein the base station configures the UE with a first beam corresponding to a first transmission reception point (TRP) and a second beam corresponding to a second TRP, wherein the first and second beam are in frequency range 2 (FR2) and wherein the UE does not support simultaneous reception of multiple beams in FR2, detect a beam failure during a beam failure detection (BFD) evaluation period, identify one or more candidate beams during a candidate beam detection (CBD) evaluation period and transmit a beam failure recovery (BFR) request to the base station.

    Techniques in measurement gap configuration in new radio (NR) related communications

    公开(公告)号:US12267897B2

    公开(公告)日:2025-04-01

    申请号:US17267365

    申请日:2019-08-07

    Applicant: Apple Inc.

    Inventor: Jie Cui Yang Tang

    Abstract: Embodiments include methods, apparatuses, storage media, and systems for measurement gap (MG) configuration in an E-UTRA (Evolved Universal Terrestrial Radio Access)-New radio dual connectivity (EN-DC) network, and other new radio (NR) related networks. Various embodiments describe how to configure a measurement gap (MG) based on various conditions in a network, which may include, but are not limited to, different MG types, operating frequencies and modes in the network, timing advancing, and how to determine a starting point of the configured MG to utilize the MG and perform certain measurements adequately.

    Method and systems for multiple precoder indication for physical uplink shared channel communications

    公开(公告)号:US12256378B2

    公开(公告)日:2025-03-18

    申请号:US17441929

    申请日:2020-08-05

    Applicant: Apple Inc.

    Abstract: Approaches for performing Physical Uplink Shared Channel (PUSCH) transmissions include receiving, by a user equipment (UE) from a base station, an indicator of a plurality of precoders corresponding to M Physical Uplink Shared Channel (PUSCH) repetitions, wherein M is an integer. A plurality of precoders corresponding to two or more of the M PUSCH repetitions are indicated. The UE configures the plurality of precoders based on the indicator and transmits one or more of the M Physical Uplink Shared Channel (PUSCH) repetitions corresponding to one or more of the plurality of precoders. The indicator can be provided in higher layer signaling. One or more transmission rank indicator (TRIs) and transmission precoder matrix indicators (TPMIs) for the M PUSCH repetitions can be provided. The indicator can be provided in a scheduling downlink control indicator (DCI) communication. The indicator can also be provided within N sounding reference signal (SRS) resource indicator(s) (SRIs) of the scheduling DCI.

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