Methods, apparatus and systems for enhanced wireless monitoring of vital signs are described. In one example, a described system comprises: a transmitter configured to transmit a wireless signal through a wireless channel of a venue; a receiver configured to receive the wireless signal through the wireless channel; and a processor. The received wireless signal differs from the transmitted wireless signal due to the wireless channel that is impacted by a periodic motion of a vital sign of an object in the venue. The processor is configured for: obtaining a time series of channel information (CI) of the wireless channel based on the received wireless signal, computing a two dimensional (2D) decomposition of the time series of CI (TSCI), enhancing the 2D decomposition, and monitoring the periodic motion of the vital sign based on the enhanced 2D decomposition.

Embodiments of a User Equipment (UE) to support dual-connectivity with a Master Evolved Node-B (MeNB) and a Secondary eNB (SeNB) are disclosed herein. The UE may receive downlink traffic packets from the MeNB and from the SeNB as part of a split data radio bearer (DRB). At least a portion of control functionality for the split DRB may be performed at each of the MeNB and the SeNB. The UE may receive an uplink eNB indicator for an uplink eNB to which the UE is to transmit uplink traffic packets as part of the split DRB. Based at least partly on the uplink eNB indicator, the UE may transmit uplink traffic packets to the uplink eNB as part of the split DRB. The uplink eNB may be selected from a group that includes the MeNB and the SeNB.

Disclosed are a protection method for radio frequency operation abnormality, a radio frequency host, and a radio frequency operation system. The protection method for radio frequency operation abnormality includes: detecting preset kinds of detection data of a radio frequency operation in real time when detecting that a radio frequency host continuously outputs radio frequency energy; determining whether detected preset kinds of detection data meets a preset abnormal state; and when the preset abnormal state is met, controlling a radio frequency generating apparatus to stop outputting radio frequency energy and controlling an emergency stop apparatus to cut off a radio frequency energy output path of the radio frequency host. By means of dual protection for operation abnormality, safety of radio frequency operation is improved.

The present disclosure relates to a radar device, including a transmitter circuit configured to generate an RF oscillator signal and to transmit an RF fault detection signal based on the RF oscillator signal, a receiver circuit configured to receive an RF reception signal based on the RF fault detection signal and to mix the RF reception signal with the RF oscillator signal in order to obtain a down-converted reception signal, and a fault detection circuit configured to detect a hardware fault of the radar device based on a phase of the down-converted reception signal.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, configuration information specifying similarity data to be provided in a Layer 1 (L1) report. The UE may transmit, to the base station and based at least in part on receiving the configuration information, the L1 report. The L1 report indicates a measure of similarity between a current condition of the UE and a past condition of the UE associated with a past event associated with the UE. Numerous other aspects are described.

Example embodiments of the present disclosure relate to relaxing measurements for failure detection in a cell. In example embodiments, a device performs measurements on one or more reference signals on one or more measurement occasions and determines one or more reference signal received power, RSRP, levels of a cell based on the measurements on the one or more reference signals. Further, the device determines one or more reference RSRP levels reflecting radio link quality or beam quality, one of the reference RSRP levels being associated with one of the determined one or more RSRP levels of the cell. The device evaluates a relaxation criterion based on the one or more reference RSRP levels and the one or more determined RSRP levels of the cell. Moreover, the device relaxes measurements for failure detection in the cell, if it is evaluated that the relaxation criterion has been fulfilled for a time period.

A UE may receive a BFD-RS and calculate, based on the BFD-RS, one or more of a value of an RSSI or at least one of a value of an SNR or a value of an RSRP, such that the UE may report a BFI based on the calculated values. The UE may initiate at least one of a total BFI timer or a consecutive BFI timer when a first BFI of a plurality of BFIs is stored, and increment at least one of a total BFI counter or a consecutive BFI counter when each of the plurality of BFIs is stored. A BFD procedure may be performed if at least one of the total BFI counter is greater than or equal to a maximum total count or the consecutive BFI counter is greater than or equal to a maximum consecutive count prior to an expiration of respective BFI timers.

A UE may receive a BFD-RS and calculate, based on the BFD-RS, one or more of a value of an RSSI or at least one of a value of an SNR or a value of an RSRP, such that the UE may report a BFI based on the calculated values. The UE may initiate at least one of a total BFI timer or a consecutive BFI timer when a first BFI of a plurality of BFIs is stored, and increment at least one of a total BFI counter or a consecutive BFI counter when each of the plurality of BFIs is stored. A BFD procedure may be performed if at least one of the total BFI counter is greater than or equal to a maximum total count or the consecutive BFI counter is greater than or equal to a maximum consecutive count prior to an expiration of respective BFI timers.

A method by which a first wireless device maintains beamforming in a wireless AV system, according to one embodiment of the present invention, comprises the steps of: transmitting a packet including a non-training field and a plurality of training fields to a second wireless device, wherein the non-training field is transmitted on the basis of the best sector combination from among a plurality of candidate sector combinations predetermined between the first wireless device and the second wireless device, and the plurality of training fields is transmitted on the basis of the plurality of candidate sector combinations; receiving candidate beam feedback information as a response to the plurality of training fields; determining, on the basis of the candidate beam feedback information, whether a channel change due to an obstacle occurs; and updating the best sector combination on the basis of the candidate beam feedback information when it is determined that the channel change occurs.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a transmitter node may predict a future state associated with a wireless channel at a future time instance using a machine learning model, wherein the future state is predicted based at least in part on one or more of weights associated with the machine learning model, a current state associated with the wireless channel, or one or more previous states associated with the wireless channel. The transmitter node may select one or more parameters for a transmission to occur at the future time instance based at least in part on the future state associated with the wireless channel. The transmitter node may perform the transmission using the one or more parameters. Numerous other aspects are described.