CONTENTION WINDOW SIZE UPDATES FOR CODE BLOCK GROUP BASED RETRANSMISSION CONFIGURATIONS

    公开(公告)号:US20220085924A1

    公开(公告)日:2022-03-17

    申请号:US17415845

    申请日:2020-03-20

    Applicant: Apple Inc.

    Abstract: Apparatuses, systems, and methods for performing contention window size updates for code block group based retransmission configurations in a wireless communication system. A code block group based wireless communication may be performed in unlicensed spectrum. A reference burst of the code block group based wireless communication may be identified. One or more of a number of acknowledgements or a number of negative acknowledgements associated with the reference burst may be identified. A contention window size adjustment may be determined based at least in part on one or more of the number of acknowledgements or the number of negative acknowledgements associated with the reference burst.

    Enhanced Cell Search and System Information Acquisition

    公开(公告)号:US20220006585A1

    公开(公告)日:2022-01-06

    申请号:US17397849

    申请日:2021-08-09

    Applicant: Apple Inc.

    Abstract: Embodiments of efeMTC synchronization signals for enhanced cell search and enhanced system information acquisition are described. In some embodiments, an apparatus of a base station (BS) is configured to generate a length-x sequence for an efeMTC synchronization signal, the length-x sequence configured for repetition in frequency domain within 6 physical resource blocks (PRB). In some embodiments, to generate the length-x sequence, the BS may be configured to select any one index of the set of root indices {1, 2, 63}, excluding the root indices 25, 29 and 34, to correspond to a different physical-layer cell identity (PCID). In some embodiments, the BS may be configured to encode RRC signaling to include a System Information Block (SIB) comprising configuration information for transmission of the efeMTC synchronization signal, and transmit the length-x sequence as the efeMTC synchronization signal in frequency resources according to the SIB.

    ANCHOR CHANNEL DESIGN FOR UNLICENSED INTERNET OF THINGS (IoT)

    公开(公告)号:US20210359815A1

    公开(公告)日:2021-11-18

    申请号:US17444022

    申请日:2021-07-29

    Applicant: APPLE INC.

    Abstract: Technology for a Next Generation NodeB (gNB) operable to communicate over an anchor channel for Unlicensed Internet of Things (U-IoT) is disclosed. The gNB can encode control information for transmission on two discovery reference signal (DRS) subframes to a user equipment (UE). The control information can be transmitted on an anchor channel having a set frequency for U-IoT in an adaptive frequency hopping system. The control information can include: a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a physical broadcast channel (PBCH) transmission, and a system information block for MulteFire bandwidth reduced (SIB-MF-BR).

    Narrowband internet-of-things (NB-IOT) enhancements

    公开(公告)号:US11140634B2

    公开(公告)日:2021-10-05

    申请号:US16473586

    申请日:2018-03-16

    Applicant: Apple Inc.

    Abstract: An apparatus of a Narrowband Internet-of-Things (NB-IoT) user equipment (UE) includes processing circuitry. To configure the NB-IoT UE for open loop transmit power control, the processing circuitry is to decode a narrowband system information block (NB-SIB) to obtain a narrowband physical random access channel (NPRACH) resource set and power control information associated with the NPRACH resource set. A random access channel (RACH) preamble is encoded for transmission with or without repetitions to a base station during a RACH procedure and using the NPRACH resource set. The transmission has transmission power based on the power control information. A narrowband uplink resource assignment received during the RACH procedure is decoded. A connection setup completion message is encoded for transmission to the base station using the narrowband uplink resource assignment.

    Enhanced cell search and system information acquisition

    公开(公告)号:US11088797B2

    公开(公告)日:2021-08-10

    申请号:US16496363

    申请日:2018-03-20

    Applicant: Apple Inc.

    Abstract: Embodiments of efeMTC synchronization signals for enhanced cell search and enhanced system information acquisition are described. In some embodiments, an apparatus of a base station (BS) is configured to generate a length-x sequence for an efeMTC synchronization signal, the length-x sequence configured for repetition in frequency domain within 6 physical resource blocks (PRB). In some embodiments, to generate the length-x sequence, the BS may be configured to select any one index of the set of root indices {1, 2, . . . , 63}, excluding the root indices 25, 29 and 34, to correspond to a different physical-layer cell identity (PCID). In some embodiments, the BS may be configured to encode RRC signaling to include a System Information Block (SIB) comprising configuration information for transmission of the efeMTC synchronization signal, and transmit the length-x sequence as the efeMTC synchronization signal in frequency resources according to the SIB.

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