Channel Estimation Using Artificial Intelligence

    公开(公告)号:US20240406036A1

    公开(公告)日:2024-12-05

    申请号:US17756852

    申请日:2021-06-07

    Applicant: Apple Inc.

    Abstract: A user equipment (UE) is configured to perform channel estimation. The UE operates in a current channel estimation mode comprising either one of a first mode or a second mode, wherein the first mode comprises receiving first reference signals (RS) having a first RS overhead and wherein the second mode comprises receiving second reference signals (RS) having a second RS overhead, receives a network indication to switch from the current channel estimation mode to a new channel estimation mode comprising the other one of the first mode or second mode, transmits an acknowledgment to the network that the network indication was received and switches from the current channel estimation mode to the new channel estimation mode in accordance with the network indication.

    Scheduling of Control Signaling on a Primary Cell by a Secondary Cell

    公开(公告)号:US20240381374A1

    公开(公告)日:2024-11-14

    申请号:US18780925

    申请日:2024-07-23

    Applicant: Apple Inc.

    Abstract: A base station of a network configures a first search space having a first search space identification (SearchSpaceId) in a special cell (SpCell) and a second search space having a second search space identification (SearchSpaceId) in a secondary cell (SCell) for monitoring control signaling that schedules operations on the SpCell. The base station transmits a radio resource control (RRC) configuration to a user equipment (UE) including the first SSID and the second SSID, wherein the RRC configuration configures the UE to monitor the first search space having the first SSID for scheduling of a first type of control signaling and the second search space having the second SSID for scheduling of a second type of control signaling.

    Half Duplex Frequency Division Duplex Collision Handling

    公开(公告)号:US20240297776A1

    公开(公告)日:2024-09-05

    申请号:US17759870

    申请日:2021-08-05

    Applicant: Apple Inc.

    CPC classification number: H04L5/16 H04W74/0838

    Abstract: A user equipment (UE) is configured to determine that half-duplex frequency division duplex (HD-FDD) is enabled by a network with which the UE is communicating, identify a collision between a cell-specific downlink reception and a cell-specific uplink transmission and implement a HD-FDD collision handling technique. A UE may also be configured to determine that half-duplex frequency division duplex (HD-FDD) is enabled by a network with which the UE is communicating, perform a first cell-specific uplink transmission at a first time and perform a first cell-specific downlink reception at a second time, wherein a guard period represents a time duration between the first time and the second time during which the UE is not to perform a second different cell-specific uplink transmission or a second different cell-specific downlink reception.

    INTRA-CELL UE-TO-UE CROSS LINK INTERFERENCE MANAGEMENT AT FULL-DUPLEX OPERATION

    公开(公告)号:US20240223343A1

    公开(公告)日:2024-07-04

    申请号:US17758298

    申请日:2021-09-24

    Applicant: APPLE INC.

    Abstract: Methods and systems are disclosed for a UE to manage and measure intra-cell cross link interference (CLI) when served by a base station operating in full-duplex FDD. The signaling may indicate to a victim UE resources to measure to determine the level of CLI from aggressor UEs. The resources used for the CLI measurement may be resources not scheduled by the base station for use by the victim UE for downlink reception, but are scheduled for use by the aggressor UEs for transmitting uplink traffic or for transmitting reference signals used to characterize the uplink channel. The victim UE may report the CLI measurements to the base station for the base station to adjust scheduling of downlink resources to the victim UE. In one aspect, the signaling from the base station may indicate to the victim UE the locations of scheduled downlink symbols that may potentially be impacted by CLI.

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