Abstract: In an embodiment of the techniques presented herein, a charging system includes an input port, a wireless charging unit, having a magnetic charging interface, and a wireless charging controller configured to generate a magnetic charging signal at the magnetic charging interface based on a first connection state of the magnetic charging interface, and a universal serial bus power delivery (USB-PD) power adaptor, having an output port, and a USB-PD controller configured to deliver power to the output port, wherein a first portion of available power at the input port is allocated to the wireless charging unit for generating the magnetic charging signal responsive to the first connection state indicating a connected device, and a second portion of the available power at the input port is allocated to the USB-PD adaptor based on the first portion allocated to the wireless charging unit.

Abstract: Methods and systems for generating balanced data sets for speech-based discriminative tasks. The disclosed method includes, among other things, generating, based on a plurality of natural speech recordings, a synthetic speech data set, modifying, based on language science resources, the synthetic speech data set, and generating, based on the modified synthetic speech data set and the plurality of natural speech recordings, a balanced data set for training a discriminative model to perform a speech-based discriminative task.

Abstract: A method can include, by operation of a first wireless device, storing a first passphrase comprising a common password and a specific password, transforming the common password into a first finite field (FF) element and the specific password into a second FF element. A first key can be generated using a received third scalar value and third FF element. A commit message can be transmitted with a portion encrypted with the first key. In response to receiving a fourth scalar value and a fourth FF element, generating a second key using at least the fourth scalar value and the fourth FF element, and transmitting a second wireless message with a portion encrypted with the second key. In response to validating a received confirmation message using the second key, establishing encryption keys for a wireless connection using at least the second key. Corresponding devices and systems are also disclosed.

Abstract: One or more devices, systems, and/or methods are provided. In an example of the techniques presented herein, a receiver has a receiver front end configured to receive time domain data in natural order, a fast Fourier transform module configured to generate frequency domain data in digit reversed order based on the time domain data, a demodulator configured to generate first demodulated data in digit reversed order based on the frequency domain data, and a de-interleaver configured to perform a reordering permutation on the first demodulated data to generate second demodulated data in natural order.

Abstract: A wireless device includes a front end and a processor coupled to the front end. The processor is to initiate, via the front end, association of the wireless device with an anchor wireless device to communicate with the anchor wireless device. The processor is further to cause the front end to transmit, to the anchor wireless device, management frames including a plurality of bits that specify physical layer (PHY) capabilities. The plurality of bits includes a particular bit that indicates whether the wireless device is an Internet-of-things (IoT) device.

Abstract: Systems, methods, and devices improve medium usage by wireless devices. Methods include determining, using one or more processing elements, a wireless channel switch operation should be performed by a first wireless device and a second wireless device communicating using a first wireless channel, and identifying, using the one or more processing elements, one or more mitigation operations based on data packet activity associated with the wireless channel. Methods further include generating, using the one or more processing elements, a mitigation signal responsive to identifying medium reservation activity within the data packet activity, and initiating, using the one or more processing elements, the wireless channel switch operation to switch to a second wireless channel.

Abstract: A current-sink and method of using the same is provided for sinking transient load currents of a load coupled to a floating-rail. In one embodiment, the current-sink includes a latch system operable to receive a transient load current signal from the load and set a latch to apply a voltage to a gate of a current sinking switch. The current sinking switch includes a first source/drain (S/D) coupled to the floating-rail, and a second S/D coupled to ground, and is operable to sink the transient load current to provide a stable floating-rail voltage (VSSHV) on the floating-rail. Generally, the latch system further includes a dynamically biased comparator for comparing VSSHV to a reference voltage and resetting the latch when a difference is less than a predetermined voltage. A dynamic bias circuit coupled to a latch output enables the comparator only while the transient load current is present.

Abstract: A system and method for improving the accuracy of a secure phase-based ranging procedure and a Direction Finding procedure. The method includes receiving radio frequency signals from a second communication device. The method includes operating in a first mode including generating first location data based on the radio frequency signals and, transferring the first location data to a second processor in compliance with a Bluetooth Host Control Interface. The method includes comparing one or more conditions to one or more threshold values and responsive to the comparing transitioning from operating in the first mode to operating in a second mode. The method includes, while operating the second mode, generating second location data based on the radio frequency signals and, transferring the second location data to the second processor at a higher data transfer rate than the transferring of the first location data to the second processor.

Abstract: Systems and methods described herein determine, by a processing device executing on a requesting station, a target wake time (TWT) buffer size, wherein the TWT buffer size indicates a buffer size to allocate at a responding station when the requesting station is in a sleep mode. The systems and methods insert, by the requesting station, a TWT buffer size request into a request message, wherein the TWT buffer size request comprises the TWT buffer size. In turn, the systems and methods transmit the request message from the requesting station to the responding station.

Abstract: A system to perform high speed passive serial configuration of an FPGA is disclosed. The system includes an MCU that includes an interface, an FPGA coupled to the MCU over the interface, and a flash memory coupled to the MCU and to the FPGA over the interface. The flash memory includes MCU firmware for the MCU and FPGA configuration data for the FPGA. To perform passive serial configuration of the FPGA, the MCU is operable to at least: configure the flash memory to an input/output (IO) mode, place the FPGA in a configuration mode, send a read command over the interface to the flash memory for the FPGA configuration data, and continuously provide a clock signal over the interface to the flash memory until the FPGA configuration data is entirely read.

Abstract: Systems, methods, and devices reduce and mitigate spurs that may occur in transmit waveforms of wireless communications devices. Methods include beginning transmission of a portion of a data packet from a baseband layer of a wireless communications device, and generating a spur canceling signal based on an estimated magnitude and an estimated phase of a spur signal at identified spur frequencies of a frequency band used for the transmission. Methods also include subtracting the spur canceling signal from the transmission of the portion of the data packet, and generating a transmitted signal based on the subtracting such that the spur canceling signal is subtracted during the transmission of the portion of the data packet.

Abstract: A method can include, by operation of a first wireless device, storing media access control (MAC) addresses for associated devices in first memory circuits of the first wireless device and receiving a wireless request protocol data unit (PDU) via wireless communication circuits. By operation of controller circuits of the first wireless device, determining if the MAC address of the request PDU matches a stored MAC address, and, in response to at least the MAC address of the request PDU matching a stored MAC address, ignoring the request PDU or not transmitting buffered data corresponding to a destination of the matching MAC address. Corresponding devices and systems are also disclosed.

Abstract: A transmitter has a port configured to receive a transmit signal, a first power amplifier connected to the port, a second power amplifier connected to the port, a power supply switch configured to selectively couple one of a first supply voltage terminal or a second supply voltage terminal to one of a supply terminal of the first power amplifier or a supply terminal of the second power amplifier, a first antenna output terminal connected to the first power amplifier, a second antenna output terminal connected to the second power amplifier, and a control unit configured to control the power supply switch based on a transmitter power requirement to provide an amplified transmit signal based on the transmit signal at one of the first antenna output terminal or the second antenna output terminal.

Abstract: A method can include, by operation of an access point device (AP), between transmissions of a periodic beacon frame, communicating with each associated station devices (STAs), from communications with the STAs determining connection information for all associated STAs, and generating an information element (IE) that includes the connection information for all associated STAs. During a beacon transmission period, a beacon frame can be transmitted that includes a media access control (MAC) header, a frame body, and a frame check sequence. The frame body can include the IE. Corresponding devices and systems are also disclosed.

Abstract: Techniques are provided for implementing liquid tolerance for a touch device. A sensor array of the touch device is scanned to generate response signals. In response to a response signal exceeding a touch threshold, a signal profile analysis is performed. The signal profile analysis includes sorting the response signals according to ascending order of delta positions to generate sorted signals. An extended vector of the sorted signals is formed. The extended vector of the sorted signals is analyzed using a fitted curve. In response to a feature of the fitted curve satisfying a criteria, the response signal is reported as a touch event. In response to the feature not satisfying the criteria, the response signal is rejected as a false touch.

Abstract: A system includes a host and at least two Bluetooth controllers. The host is configured to execute a Bluetooth protocol stack. The at least two Bluetooth controllers are communicatively coupled to the host. Each Bluetooth controller is configured to wirelessly communicate with at least one respective external device.

Abstract: Disclosed are techniques for a device that wants to be a central device when creating a connection in a communication network such as Bluetooth Low Energy (BLE) to advertise information associated with a connection window to solicit a connection with a scanning peer device. When the scanning peer device receives the information, it may enter a connection as a peripheral device with the advertising device at the advertised connection window, allowing the advertising device to become the central device. Disclosed are also techniques for a device that wants to be a central device to advertise information associated with a scan window of the device to solicit a directed advertisement event from a peer device during the advertised scan window. The peer device initially scans but may advertise during the scan window as advertised to enable the central device to create a connection where the peer device becomes a peripheral device.

Abstract: A method of memory allocation is disclosed. An allocation size of memory to allocate is determined. A first memory block is searched for based on the allocation size, where the first memory block is a free memory block. When the first memory block is not found, a first macro block in a memory device is searched for, where the first macro block is an available macro block. When the first macro block is found, the first macro block is powered on, and the first macro block is marked as occupied.

Abstract: Disclosed are techniques to use existing BLE broadcast-based signaling protocols to achieve sub-1 ms peripheral-to-central latency even when multiple peripheral devices share the air-time. The techniques adapt existing BLE advertising or broadcast signaling protocols to efficiently allocate air-time to support frequent peripheral-to-central transmissions that are relatively short in duration and less frequent central-to-peripheral transmissions. A broadcast isochronous group (BIG) protocol may be used to reduce peripheral-to-central latency by aggregating broadcast isochronous streams (BIS) from peripheral devices into a BIG. A one-to-many broadcast event that may carry other broadcast data from the central device to the peripheral devices may be used for time synchronization by the peripheral devices and to configure time parameters of broadcast from the peripheral devices. A reverse many-to-one broadcast from the peripheral devices to the central device may be based on the time parameters.

Abstract: A method can include wirelessly receiving sensor data from at least one vehicle system. By operation of vehicle processing circuits, a vehicle hazard event can be detected using at least the sensor data. In response to detecting the vehicle hazard event, event data for identifying the vehicle hazard event can be generated, time data for the detected vehicle hazard event can be determined, and geographic location data for the detected vehicle hazard event can be determined. By operation of vehicle wireless circuits, an event report can be wirelessly transmitted that includes event data and the geographic location data. Corresponding devices and systems are also disclosed.