Configuring Cellular Sidelink Resources in a Flexible Manner

    公开(公告)号:US20220303962A1

    公开(公告)日:2022-09-22

    申请号:US17442120

    申请日:2020-08-05

    Applicant: Apple Inc.

    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for configuring cellular sidelink resources in a flexible manner. A cellular base station may select a cellular sidelink resource pool. The cellular sidelink resource pool may include non-contiguous frequency resources. The cellular base station may provide cellular sidelink resource pool configuration information to a wireless device. The cellular sidelink resource pool configuration information may configure the cellular sidelink resource pool that includes non-contiguous frequency resources.

    Mechanisms for Indicating Beam Directions

    公开(公告)号:US20220303950A1

    公开(公告)日:2022-09-22

    申请号:US17438044

    申请日:2020-10-15

    Applicant: Apple Inc.

    Abstract: A base station may transmit beam indication information to one or more user equipment (UE) devices. For each of a plurality of time units (e.g., symbols) in a time interval (e.g., spanning one or more slots), the beam indication information indicates a corresponding beam that the base station will use to transmit or receive. A UE device may have knowledge of the beam in which it currently resides, e.g., by performing power measurements during a beam scan procedure. Thus, the beam indication information enables the UE to perform transmissions and/or receptions (e.g., configured transmissions and/or receptions) during the appropriate time unit(s). The beam indication information may be dynamically transmitted as part of downlink control information. This transmission may omni-directional, wide beam, or narrow beam. Various schemes of encoding the beam indication information are contemplated.

    Dynamic Configuration of Aperiodic Sounding Reference Signal Offsets in Cellular Communications Systems

    公开(公告)号:US20220303088A1

    公开(公告)日:2022-09-22

    申请号:US17439059

    申请日:2020-10-12

    Applicant: Apple Inc.

    Abstract: A cellular base station (BS) which determines an aperiodic sounding reference signal (SRS) triggering offset configuration specifying an offset between an aperiodic SRS trigger received by a user equipment (UE) and transmission of the SRS by the UE. The cellular base station may determine that the SRS triggering offset should be adjusted. In response, the cellular base station may transmit signaling to the UE specifying a new value for the aperiodic SRS triggering offset. The new SRS triggering offset value may be partly based on a minimum timing offset for the UE and may be contained in a medium access control (MAC) control element (CE) or in downlink control information (DCI). Additionally, the new triggering offset value may be applicable for a plurality of component carriers or bandwidth parts. The cellular base station may also determine a new triggering offset value due to conflicts regarding the AP-SRS transmission.

    Cross-Cell Beam Failure Recovery
    267.
    发明申请

    公开(公告)号:US20220302986A1

    公开(公告)日:2022-09-22

    申请号:US17442108

    申请日:2020-08-04

    Applicant: Apple Inc.

    Abstract: This disclosure relates to performing beam failure recovery during an inter-cell connection involving a UE in communication with one or more base stations in a cellular communication system. In various embodiments, a user equipment determines one or more beam failures by monitoring one or more reference signals transmitted by one or more base stations, where the UE is connected to the one or more base stations. The UE further performs candidate beam detection by monitoring at least one candidate reference signal that is transmitted by one or more candidate base stations, where at least one candidate base station (a first candidate base station) is different from the one or more base stations to which the UE was previously communicating. The UE selects the first candidate base station based on the candidate beam detection, and transmits a beam failure recovery request (BFRQ) message to the first candidate base station based on the selection.

    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.

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