WAKE-UP SIGNAL SUB-GROUPING FOR ENHANCED MACHINE TYPE COMMUNICATION (EMTC) AND NARROWBAND INTERNET OF THINGS (NB-IOT)

    公开(公告)号:US20210314869A1

    公开(公告)日:2021-10-07

    申请号:US17267140

    申请日:2019-08-08

    Applicant: Apple Inc.

    Abstract: Techniques discussed herein can facilitate communication of group-based WUS(s) (Wake Up Signal(s)) for eMTC (enhanced Machine Type Communication) and/or NB (NarrowBand)-IoT (Internet of Things). One example embodiment is an apparatus configured to be employed in a UE (User Equipment), comprising: a memory interface; and processing circuitry configured to: determine a WUS group of a plurality of WUS groups, wherein the WUS group is associated with a first group WUS (Wake Up Signal) of a plurality of group WUSs; determine a starting subframe for the first group WUS; and monitor the starting subframe for the first group WUS, wherein the UE is configured to communicate via one or more of eMTC or NB (NarrowBand)-IoT.

    Method and apparatus for radio link monitoring

    公开(公告)号:US10985848B2

    公开(公告)日:2021-04-20

    申请号:US16483982

    申请日:2018-05-15

    Applicant: Apple Inc.

    Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.

    Uplink power control for 5G systems

    公开(公告)号:US10925005B2

    公开(公告)日:2021-02-16

    申请号:US16079494

    申请日:2017-03-23

    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.

    Methods, apparatuses, and systems for multi-point, multi-cell single-user based multiple input and multiple output transmissions

    公开(公告)号:US10862645B2

    公开(公告)日:2020-12-08

    申请号:US16408107

    申请日:2019-05-09

    Applicant: Apple Inc.

    Abstract: Methods, systems, and storage media for providing multi-cell, multi-point single user (SU) multiple input and multiple output (MIMO) operations are described. In embodiments, an apparatus may receive and process a first set of one or more independent data streams received in a downlink channel from a first transmission point. The apparatus may receive and process a second set of one or more independent data streams received in a downlink channel from a second transmission point. The apparatus may process control information received from the first transmission point or the second transmission point. The control information may include an indication of a quasi co-location assumption to be used for estimating channel characteristics for reception of the first set of one or more independent data streams or the second set of one or more independent data streams. Other embodiments may be described and/or claimed.

    Frequency domain channel state information (CSI) compression

    公开(公告)号:US11515917B2

    公开(公告)日:2022-11-29

    申请号:US17417302

    申请日:2020-01-18

    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.

    TRANSMISSION OF SYNCHRONIZATION SIGNALS

    公开(公告)号:US20220353002A1

    公开(公告)日:2022-11-03

    申请号:US17811378

    申请日:2022-07-08

    Applicant: APPLE INC.

    Abstract: Technology for a Next Generation NodeB (gNB) operable to encode a primary synchronization signal for transmission to a user equipment (UE) is disclosed. The gNB can identify a sequence d(n) for a primary synchronization signal. The sequence d(n) can be defined by: d(n)=1−2s(n), where s(n) is a maximum run length sequence (m-sequence) and s(n) is provided as s(n+7)=(s(n+4)+s(n))mod 2, where 0≤n≤127. The gNB can generate the primary synchronization signal based on the sequence d(n). The gNB can encode the primary synchronization signal for transmission to the UE.

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