Abstract: Presented are systems and methods for model management. A wireless communication node can determine a configured set of at least one field of a downlink control information (DCI) signaling, that is to be shared by a plurality of transmissions, the plurality of transmissions scheduled by the DCI signaling on a plurality of component carriers (CCs). The wireless communication node can send an indication of one or more fields from the configured set to a wireless communication device via a dynamic signaling.

Abstract: The present disclosure describes methods, system, and devices for configuring time-frequency resource in a half-duplex and/or full-duplex telecommunication system. The method includes receiving, by a user equipment (UE), first signaling to configure a first slot structure, the first slot structure comprising a symbol attribute of a set of orthogonal frequency division multiplexing (OFDM) symbols as a first symbol attribute; receiving, by the UE, second signaling to configure a second slot structure, the second slot structure comprising to change the symbol attribute of the set of OFDM symbols as a second symbol attribute; and determining, by the UE based on the second slot structure, a bandwidth part (BWP) comprising at least one symbol in the set of OFDM symbols, the BWP having an attribute being same as the second symbol attribute.

Abstract: Methods, apparatus, and systems that enable scheduling of data transmissions for both half-duplex and full-duplex transmissions in Time Division Duplexing (TDD) systems are disclosed. In one example aspect, a method for wireless communication includes receiving, by a terminal device, scheduling information from a base station indicating a resource for a transmission in a first direction, the resource comprising at least one symbol configured for use in a second direction that is different than the first direction, and performing, by the terminal device, the transmission with the base station in the first direction using the at least one symbols in the resource.

Abstract: System, methods and apparatuses for time-frequency resource configuration can include a wireless communication node configuring a first bandwidth part (BWP) in frequency domain. The wireless communication node can configure at least a first subband BWP within the first BWP, and at least one specific type of symbols for the first subband BWP. Configuring the first BWP and the first subband BWP can include the wireless communication node signaling the configurations of the first BWP and the first subband BWP to a wireless communication device.

Abstract: Presented are systems and methods for public channels and signals. A wireless communication node may determine a configuration for a resource configuration set scheduled in a cross-division duplex (XDD) slot, the configuration indicating that any one or more resource units of the resource configuration set that may overlap with a frequency band in the XDD slot that is of a different transmission direction as the resource configuration set, are to be remapped in a defined manner. The wireless communication node may send the configuration to a wireless communication device.

Abstract: A data storage device is disclosed comprising a first head actuated radially over a first disk surface, and a second head actuated radially over a second disk surface. A seek operation seeks the first head to a first fly height calibration track and seeks the second head to a second fly height calibration track. During a revolution of the first and second disk surfaces the first head is used to read the first fly height calibration track in order to calibrate a first fly height actuator for the first head, and after switching from the first head to the second head, the second head is used to read the second fly height calibration track in order to calibrate a second fly height actuator for the second head.

Abstract: A disk drive is disclosed comprising a head actuated over a disk comprising a plurality of tracks. The head comprises a touchdown element operable to generate a touchdown signal. The touchdown signal is amplified by a gain to generate an amplified touchdown signal, and a touchdown event is detected by comparing the amplified touchdown signal to a threshold. During a calibration operation, the gain is adjusted and the threshold is adjusted until the amplified touchdown signal does not exceed the threshold. During a normal operation, the touchdown event is detected based at least partly on the adjusted gain and the adjusted threshold.

Abstract: A disk drive is disclosed comprising a head actuated over a disk, a dynamic fly height (DFH) actuator operable to control a fly height of the head over the disk, and a touchdown (TD) sensor operable to generate a TD signal. A periodic control signal is applied to the DFH actuator to generate a periodic response in the TD signal comprising at least one cycle, wherein the cycle comprises a first half cycle and a second half cycle. An anti-correlation is computed between the first half cycle and the second half cycle of the TD signal, and the head contacting the disk is detected in response to the anti-correlation.

Abstract: A disk drive is disclosed comprising a head actuated over a disk. An analog touchdown (TD) signal is compared to a TD threshold in order to generate a calibrated TD threshold for a plurality of different dynamic fly height (DFH) settings. The calibrated TD thresholds and corresponding DFH settings are fitted to an estimated curve. At least one of the TD threshold and the DFH setting is adjusted, and a corresponding next point in the estimated curve is predicted. An actual next point corresponding to the adjustment is determined, and a prediction error is generated based on a difference between the predicted next point and the actual next point. A touchdown of the head on the disk is detected when the prediction error exceeds a prediction threshold.