Enhanced Physical Uplink Shared Channel Transmission in Wireless Communications

    公开(公告)号:US20220279523A1

    公开(公告)日:2022-09-01

    申请号:US17442196

    申请日:2021-01-13

    Applicant: Apple Inc.

    Abstract: Uplink transmissions of a mobile device (UE) may be improved in a number of ways. Uplink Transmission Time Interval (TTI) bundling, including both Type-A and Type B PUSCH repetitions, may be implemented with variable TTI bundle sizing. The TTI bundle size may be determined by a base station and communicated to the UE explicitly, or may be determined by the UE implicitly, based on an indicated repetition number and frequency hopping number. The UE may also report frequency hopping (FH) assist information to the base station for use by the base station to more efficiently configure FH for the uplink transmissions. Finally, the UE may use (or maintain) the same transmission power, for each TTI transmit occasion of the same TTI bundle in order to improve (cross-slot) channel estimation accuracy. Power allocation may be prioritized to ensure that at the same time a total power for the uplink transmissions of the UE does not exceed a specified threshold.

    Methods and Apparatus for PRACH Resource Determination and RA-RNTI Computation in Wireless Communication

    公开(公告)号:US20220225416A1

    公开(公告)日:2022-07-14

    申请号:US17456304

    申请日:2021-11-23

    Applicant: Apple Inc.

    Abstract: Aspects herein relate to wireless devices, circuits, and methods for determining a PRACH resource mapping comprising a starting symbol position within a reference slot, wherein the starting symbol position is determined based, at least in part, on a subcarrier spacing configuration of PRACH resources of a wireless network that a wireless device is operating on; and using the radio to transmit a RACH preamble and an associated RA-RNTI via the determined PRACH resource mapping. Further aspects herein relate to devices, circuits, and methods for using a modified RA-RNTI for transmission or reception of data over a wireless network, wherein the wireless network has a subcarrier spacing configuration of PRACH resources, wherein a size of the subcarrier spacing configuration of the PRACH resources causes out-of-range RA-RNTI values to be calculated using a legacy RA-RNTI equation in an unmodified form, wherein the range of permissible RA-RNTI values is from 0 to 216−1.

    Time advance adjustment delay for shortened transmission time interval under carrier aggregation or dual connectivity

    公开(公告)号:US11375524B2

    公开(公告)日:2022-06-28

    申请号:US16462877

    申请日:2018-08-01

    Applicant: APPLE INC.

    Abstract: Systems and methods are provided for handling different timing advance (TA) adjustment delays corresponding to different transmission time intervals (TTIs) from different serving cells under carrier aggregation or dual connectivity. A user equipment (UE) selects and implements one TA adjustment delay even if two or more serving cells transmit with different TTIs. In one embodiment, the UE uses a predetermined TA adjustment delay for each of a plurality of TA commands received from serving cells with different TTI lengths. In another embodiment, the UE uses a TA adjustment delay that is a maximum value of the TA adjustment delays for the TTIs from the different serving cells.

    Channel State and Beam Related Information Reporting

    公开(公告)号:US20220103305A1

    公开(公告)日:2022-03-31

    申请号:US17492633

    申请日:2021-10-03

    Applicant: Apple Inc.

    Abstract: Apparatus that sends uplink control information (UCI) from user equipment (UE) to a network node, generates elements of the UCI including at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for one or more uplink (UL) resources, a scheduling request (SR), a channel state information (CSI) report and a beam related information report in response to a trigger set by the network node. The apparatus encodes the UCI elements for transmission via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the one or more UL resources. The one or more UL resources may be UL slots or UL portions of downlink-uplink (DL-UL) slots received from a network node.

    PHYSICAL DOWNLINK CONTROL CHANNEL DESIGN FOR DFT-S-OFDM WAVEFORM

    公开(公告)号:US20220085940A1

    公开(公告)日:2022-03-17

    申请号:US17423284

    申请日:2020-01-22

    Applicant: Apple Inc.

    Abstract: Some embodiments of this disclosure include apparatuses and methods for physical downlink control channel design for a discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform. The apparatuses and methods can include at least operating a base station (BS) to generate one or more physical downlink control channels (PDCCH) in a time division multiplexing (TDM) manner using a Discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, generate a demodulation reference signal (DMRS) which is multiplexed in the TDM manner with the one or more PDCCH, and transmit the one or more PDCCH and the DMRS to a user equipment (UE).

    Control resource block set search space design

    公开(公告)号:US11265968B2

    公开(公告)日:2022-03-01

    申请号:US16473558

    申请日:2018-02-16

    Applicant: Apple Inc.

    Abstract: Apparatuses, methods and storage media associated with components and implementations of wireless communication networks, and/or portions thereof, are disclosed herein. In embodiments, an apparatus for a next generation NodeB (gNB) may include processing circuitry to determine a number of resource element groups (REGs) to be included in a resource element group bundle (REGB) for a new radio physical downlink control channel (NR-PDCCH), and generate a signal that indicates the number of the REGs. The gNB may further include encoding circuitry, coupled with the processing circuitry, to encode the signal for transmission to a user equipment (UE). Other embodiments may be disclosed throughout.

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