Enhanced LAA transceiver with aid of carrier sensing from WiFi

    公开(公告)号:US10798739B2

    公开(公告)日:2020-10-06

    申请号:US16129237

    申请日:2018-09-12

    申请人: APPLE INC.

    摘要: A method is disclosed where a user equipment (“UE”) is operating in a carrier aggregation mode and connected to a first cell operating on a licensed band and a second cell operating on an unlicensed band. The method may include the UE performing a carrier sensing operation on the unlicensed band, determining, from the carrier sensing operation, a duration that the unlicensed band will be occupied, refraining from transmitting data to the second cell on the unlicensed band for the duration that the unlicensed band will be occupied and setting a transmitter in communication with the second cell to a low power mode for the duration that the unlicensed band will be occupied.

    V2X Resource Map for Semi-Persistent Scheduling with Unicast/Groupcast Services

    公开(公告)号:US20200245408A1

    公开(公告)日:2020-07-30

    申请号:US16575218

    申请日:2019-09-18

    申请人: Apple Inc.

    摘要: Apparatuses, systems, and methods for a wireless device to perform methods for determining resources for scheduling side-link communications. The resources may be semi-persistent and/or dynamic resources. A user equipment device (UE) may determine a resource map for use in scheduling semi-persistent resources for side-link communications with at least one wireless node. The UE may transmit a resource map request message indicating preferred resource blocks, where each resource block may be defined by a time and a frequency. The UE may receive a confirmation message that may include a report regarding a set of resource blocks. The set of resource blocks may be from the preferred resource blocks included in the resource map request message. The UE may determine, based, at least in part, on the confirmation message, resource blocks to be used for the side-link communications and initiate the side-link communications using the determined resource blocks.

    Wireless Device Preferred Bandwidth Part Configuration and Duty Cycle Indication

    公开(公告)号:US20190281598A1

    公开(公告)日:2019-09-12

    申请号:US16186350

    申请日:2018-11-09

    申请人: Apple Inc.

    IPC分类号: H04W72/04 H04W76/10

    摘要: This disclosure relates to techniques for a wireless device to indicate a preferred bandwidth part and duty cycle in a cellular communication system. A wireless device and a cellular base station may establish a radio resource control connection. The wireless device may transmit an indication of a preferred bandwidth part, or a preferred communication duty cycle, or both, to the cellular base station. The cellular base station may select a bandwidth part, or communication duty cycle, or both, based at least in part on the indication provided by the wireless device, and may transmit an indication of the selected bandwidth part, communication duty cycle, or both, to the wireless device. The cellular base station and the wireless device may perform cellular communication using the selected bandwidth part, communication duty cycle, or both.

    Power Saving for Channel State Information Reference Signal Reception

    公开(公告)号:US20190281546A1

    公开(公告)日:2019-09-12

    申请号:US16295431

    申请日:2019-03-07

    申请人: Apple Inc.

    IPC分类号: H04W52/02 H04L5/00

    摘要: A base station and mobile device (UE) may coordinate transmission of reference signals and reception of corresponding channel state information (CSI) reports. If a periodic reference signal is scheduled for transmission outside the on-duration period of the UE, even if the reference signal corresponds to a periodic CSI report scheduled to be transmitted by the UE during the on-duration period, the base station may not transmit the periodic reference signal, thereby allowing the UE not to prematurely exit a low-power state. The base station may instead transmit an aperiodic reference signal at a specified point in time later than the scheduled transmission of the periodic reference signal. The UE may receive the aperiodic reference signal and either transmit the periodic CSI report or an aperiodic CSI report in response, depending on how close to the start of the on-duration period the transmission of the periodic CSI report is scheduled.