UPLINK POWER CONTROL FOR 5G SYSTEMS

    公开(公告)号:US20210289446A1

    公开(公告)日:2021-09-16

    申请号:US17248900

    申请日:2021-02-12

    Applicant: Apple Inc.

    Abstract: This disclosure proposes to use multiple power control loops in the uplink. Each power control loop may be associated with a respective antenna beam transmitted from an antenna array of the electronic device (e.g. UE) in the uplink. For example, a beam (or uplink signal) may be associated with 1, 2 or even more MIMO layer. Hence, in this latter case, each power control loop may be associated with a respective set of one or more MIMO layers. This concept is application to open-loop, closed-loop power control or both.

    FREQUENCY DOMAIN CHANNEL STATE INFORMATION (CSI) COMPRESSION

    公开(公告)号:US20230089326A1

    公开(公告)日:2023-03-23

    申请号:US17993511

    申请日:2022-11-23

    Applicant: Apple Inc.

    Abstract: An approach is described that includes receiving a CSI report, where the CSI report includes a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI). The approach further includes constructing a precoding matrix based on a linear combination of a plurality of mutually orthogonal digital Fourier transformation (DFT) spatial beams, and determining a number of bits for the PMI of the precoding matrix. The approach also includes determining a space frequency matrix based, at least in part, on the number of bits for the PMI and the precoding matrix, and compressing the space frequency matrix. Finally, the approach includes determining a compressed PMI based, at least in part, on the space frequency matrix.

    WAKE-UP SIGNAL SUB-GROUPING FOR REL-16 EMTC AND NB-IOT

    公开(公告)号:US20220167270A1

    公开(公告)日:2022-05-26

    申请号:US17438774

    申请日:2020-04-06

    Applicant: Apple Inc.

    Abstract: Systems and methods are described for wake-up signaling of user equipment (UE). The systems and methods can include at least generating, by the BS, a wake up signal (WUS), wherein the WUS includes a length-131 Zadoff-Chu (ZC) sequence and a Gold sequence for radio equipment-level (RE-level) scrambling, and transmitting, by the BS, the WUS to a user equipment (UE) in a paging group associated with the WUS.

    SYSTEM AND METHOD FOR DL TRANSMISSION WITH LOW PEAK-TO-AVERAGE-POWER (PAPR)

    公开(公告)号:US20220078825A1

    公开(公告)日:2022-03-10

    申请号:US17416743

    申请日:2020-01-03

    Applicant: Apple Inc.

    Abstract: Methods and apparatus are described for methods and apparatus for carrying out wireless communication using Long Term Evolution (LTE) in a frequency band with low peak-to-average-power. The approach includes precoding, in the frequency domain, a plurality of physical channel signals, followed by multiplexing, where the procoding is performed according to predetermined codes with a code length selected based on a length of an entire signal of the multiplexed precoded plurality of physical channel signals. In addition, the approach includes being configured to map the multiplexed precoded plurality of physical channel signals to subcarriers in the frequency band, as well to generate a time domain waveform based on the mapped signals.

Patent Agency Ranking