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    ENHANCED RACH (RANDOM ACCESS CHANNEL) DESIGN FOR 5G CIOT (CELLULAR INTERNET OF THINGS)
    11.
    发明申请
    ENHANCED RACH (RANDOM ACCESS CHANNEL) DESIGN FOR 5G CIOT (CELLULAR INTERNET OF THINGS) 有权

    公开(公告)号：US20220330332A1

    公开(公告)日：2022-10-13

    申请号：US17849809

    申请日：2022-06-27

    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

    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.

    ENHANCED OVERLAID CODE DIVISION MULTIPLE ACCESS (CDMA)
    16.
    发明申请
    ENHANCED OVERLAID CODE DIVISION MULTIPLE ACCESS (CDMA) 审中-公开

    公开(公告)号：US20200313785A1

    公开(公告)日：2020-10-01

    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

    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.

    Discontinuous Reception Alignment in Dual Connectivity Networks
    17.
    发明申请
    Discontinuous Reception Alignment in Dual Connectivity Networks 审中-公开

    公开(公告)号：US20200296790A1

    公开(公告)日：2020-09-17

    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: H04W76/28 ,  H04W52/02 ,  H04L5/00

    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.

    Outage notification and context preservation for energy-harvesting devices
    18.
    发明授权
    Outage notification and context preservation for energy-harvesting devices 有权

    公开(公告)号：US10716114B2

    公开(公告)日：2020-07-14

    申请号：US14817679

    申请日：2015-08-04

    Applicant: Apple Inc.

    Inventor： Maruti Gupta ,  Rath Vannithamby ,  Satish C. Jha ,  Kathiravetpillai Sivanesan ,  Mohammad Mamunur Rashid ,  Jing Zhu

    IPC: H04W72/04 ,  H04W4/70 ,  H04W52/02 ,  H04L5/00 ,  H04L12/26

    Abstract: Technology described herein provides systems and technologies that help avoid waste of wireless network resources due to frequent losses of wireless connectivity with energy-harvesting devices (EHDs). An energy-harvesting-indicator communication can be sent from a wireless device to a cellular base station to inform the cellular base station that the wireless device is an EHD. The cellular base station can preserve context information and/or DL data pertaining to a wireless connection with the EHD when a wireless connection is lost due to a temporarily low level of available energy at the EHD. The context information and/or DL data can be preserved by the cellular base station until the period of time elapsed exceeds a threshold time value. Upon receiving a connection-resumption communication from the EHD, the cellular base station can use preserved context information to restore the wireless connection and proceed to send preserved DL data to the EHD.

    Including Feedback Information Regarding an Individual Subband of a Wireless Channel
    19.
    发明申请
    Including Feedback Information Regarding an Individual Subband of a Wireless Channel 审中-公开
    包括关于无线信道的个别子带的反馈信息

    公开(公告)号：US20140376497A1

    公开(公告)日：2014-12-25

    申请号：US14481063

    申请日：2014-09-09

    Applicant: Apple Inc.

    Inventor： Sairamesh Nammi ,  Shankar Venkatraman ,  Gaurav Hemrajani ,  Ashvin Chheda ,  Lai King Tee ,  Neng Wang ,  Kathiravetpillai Sivanesan

    IPC: H04B7/06

    CPC classification number: H04B7/0417 ,  H04B7/0619 ,  H04B7/063 ,  H04L5/0096 ,  H04W4/20 ,  H04W72/0413

    Abstract: To report feedback information regarding a wireless channel, a mobile station determines whether a predefined condition is satisfied. In response to determining that the predefined condition is satisfied, feedback information regarding an individual one of plural subbands of the wireless channel is included in a first report to be sent to a base station. In response to determining that the predefined condition is not satisfied, aggregate feedback information regarding the plural subbands is included in a second report to be sent to the base station.

    Abstract translation: 为了报告关于无线信道的反馈信息，移动台确定是否满足预定条件。 响应于确定满足预定条件，关于无线信道的多个子带中的各个子带的反馈信息被包括在要发送到基站的第一报告中。 响应于确定不满足预定义条件，关于多个子带的聚合反馈信息被包括在要发送到基站的第二报告中。

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