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    Discontinuous reception alignment in dual connectivity networks
    22.
    发明授权
    Discontinuous reception alignment in dual connectivity networks 有权

    公开(公告)号：US11564283B2

    公开(公告)日：2023-01-24

    申请号：US16831414

    申请日：2020-03-26

    Applicant: Apple Inc.

    Inventor： Satish Chandra Jha ,  Ali T. Koc ,  Kathiravetpillai Sivanesan ,  Rath Vannithamby

    IPC: H04W52/02 ,  H04W4/00 ,  H04W76/28 ,  H04L5/00 ,  H04W76/15 ,  H04W88/06

    Abstract: A 3GPP LTE protocol enhancement realizes the full benefit of discontinuous reception (DRX) in Long Term Evolution networks by coordinating and aligning DRX operations for conserving power and timing overhead. A dual connectivity enabled User Equipment (UE) comprising a processor and transceiver is configured to align DRX configuration between counterpart Evolved Node Bs (eNB)s, wherein counterpart eNBs are a Master eNB (MeNB) and a Secondary eNB (SeNB) simultaneously connected to the UE, communicate system frame timing and system frame number (SFN) information between the counterpart eNBs, align DRX start offset (drxStartOffset) values for the counterpart eNBs according to the communicated system frame timing and SFN information to compensate for offsets in system frame timing, and allow the start of a DRX ON duration at specific frame or sub-frame times determined by the drxStartOffset values, after the expiration of a DRX inactivity timer.

    Enhanced RACH (random access channel) design for 5G Clot (cellular internet of things)
    23.
    发明授权
    Enhanced RACH (random access channel) design for 5G Clot (cellular internet of things) 有权

    公开(公告)号：US11388760B2

    公开(公告)日：2022-07-12

    申请号：US16883033

    申请日：2020-05-26

    Applicant: Apple Inc.

    Inventor： Kathiravetpillai Sivanesan ,  Yaser M. Fouad ,  Vesh Raj Sharma Banjade ,  Joonbeom Kim ,  Balkan Kecicioglu ,  Rath Vannithamby

    IPC: H04W74/08 ,  H04W72/08 ,  H04W72/14 ,  H04W4/70

    Abstract: Techniques for random access (RA) in a cellular internet-of-things (CIOT) are discussed. An example apparatus configured to be employed within a User Equipment (UE), comprises a receiver circuitry, a processor, and transmitter circuitry. The receiver circuitry is configured to receive RA resource allocation information via one of a system information message or a downlink control information (DCI) message. The processor is operably coupled to the receiver circuitry and configured to: select a RA preamble sequence; generate a payload; and spread the payload via a spreading sequence. The transmitter circuitry is configured to transmit, based on the RA resource allocation information, a RA message comprising the RA preamble sequence and the payload, wherein the RA message is transmitted in a RA slot. The receiver circuitry is further configured to receive a response comprising a device identity of the UE and one of an uplink (UL) grant or a RA reject message.

    Discontinuous Reception Alignment in Dual Connectivity Networks
    28.
    发明申请
    Discontinuous Reception Alignment in Dual Connectivity Networks 有权

    公开(公告)号：US20230081332A1

    公开(公告)日：2023-03-16

    申请号：US17989480

    申请日：2022-11-17

    Applicant: Apple Inc.

    Inventor： Satish Chandra Jha ,  Ali T. Koc ,  Kathiravetpillai Sivanesan ,  Rath Vannithamby

    IPC: H04W76/28 ,  H04W52/02 ,  H04L5/00 ,  H04W88/06 ,  H04W76/15

    Abstract: A 3GPP LTE protocol enhancement realizes the full benefit of discontinuous reception (DRX) in Long Term Evolution networks by coordinating and aligning DRX operations for conserving power and timing overhead. A dual connectivity enabled User Equipment (UE) comprising a processor and transceiver is configured to align DRX configuration between counterpart Evolved Node Bs (eNB)s, wherein counterpart eNBs are a Master eNB (MeNB) and a Secondary eNB (SeNB) simultaneously connected to the UE, communicate system frame timing and system frame number (SFN) information between the counterpart eNBs, align DRX start offset (drxStartOffset) values for the counterpart eNBs according to the communicated system frame timing and SFN information to compensate for offsets in system frame timing, and allow the start of a DRX ON duration at specific frame or sub-frame times determined by the drxStartOffset values, after the expiration of a DRX inactivity timer.

    Enhanced overlaid code division multiple access (CDMA)
    29.
    发明授权
    Enhanced overlaid code division multiple access (CDMA) 有权

    公开(公告)号：US11050504B2

    公开(公告)日：2021-06-29

    申请号：US16807639

    申请日：2020-03-03

    Applicant: APPLE INC.

    Inventor： Kathiravetpillai Sivanesan ,  Yaser Fouad ,  Vesh Raj Sharma Banjade ,  Joonbeom Kim ,  Balkan Kecicioglu ,  Yanzeng Fu ,  Rath Vannithamby

    IPC: H04J13/00 ,  H04W72/04 ,  H04W52/24 ,  H04W74/08

    Abstract: A base station can obtain channel quality conditions for mobile devices in a scheduling interval and identify a channel quality, a target transmission scheme, and a transmission power level for each of the mobile devices. The base station can assign a unique orthogonal CDMA code and can force the mobile devices to transmit K repeated bursts of uplink data such that each of the mobile devices has a rotated phase shift based on the unique orthogonal CDMA code assigned to each of the mobile devices with each of the mobile devices multiplexed on a same physical channel using an overlaid CDMA operation. The base station can process K repeated bursts that are multiplexed on the same physical channel using the overlaid CDMA operation. The base station can separate the mobile devices according to the unique orthogonal CDMA code and use IQ accumulation according to combine the K repeated bursts.

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