Abstract: Methods, apparatus, and computer-readable media are described to encode, by a first station (STA), a polling signal for periodic transmission to a second STA during each air activity instance of a plurality of air activity instances. The first STA detects an interface between a MAC layer and a software stack of a communication protocol is in a low-power state. The communication protocol is associated with a communication link between the first STA and the second STA. An empty packet from the second STA is decoded. The empty packet is received in response to the polling signal transmitted during an air activity instance of the plurality of air activity instances. The periodicity of the periodic transmission of the polling signal is adjusted based on the detected low-power state and the decoded empty packet.

Abstract: Methods, apparatus, and computer-readable media are described to encode, by a first station (STA), a polling signal for periodic transmission to a second STA during each air activity instance of a plurality of air activity instances. The first STA detects an interface between a MAC layer and a software stack of a communication protocol is in a low-power state. The communication protocol is associated with a communication link between the first STA and the second STA. An empty packet from the second STA is decoded. The empty packet is received in response to the polling signal transmitted during an air activity instance of the plurality of air activity instances. The periodicity of the periodic transmission of the polling signal is adjusted based on the detected low-power state and the decoded empty packet.

Abstract: Methods, apparatus, and computer-readable media are described to encode, by a first station (STA), a polling signal for periodic transmission to a second STA during each air activity instance of a plurality of air activity instances. The first STA detects an interface between a MAC layer and a software stack of a communication protocol is in a low-power state. The communication protocol is associated with a communication link between the first STA and the second STA. An empty packet from the second STA is decoded. The empty packet is received in response to the polling signal transmitted during an air activity instance of the plurality of air activity instances. The periodicity of the periodic transmission of the polling signal is adjusted based on the detected low-power state and the decoded empty packet.

Abstract: Methods, apparatus, and computer-readable media are described to encode, by a first station (STA), a polling signal for periodic transmission to a second STA during each air activity instance of a plurality of air activity instances. The first STA detects an interface between a MAC layer and a software stack of a communication protocol is in a low-power state. The communication protocol is associated with a communication link between the first STA and the second STA. An empty packet from the second STA is decoded. The empty packet is received in response to the polling signal transmitted during an air activity instance of the plurality of air activity instances. The periodicity of the periodic transmission of the polling signal is adjusted based on the detected low-power state and the decoded empty packet.

Abstract: For example, an apparatus may be configured to cause a first Bluetooth (BT) mobile device to configure a P2P voice link for voice communication between first and second BT audio devices via a first BT Short-Range (SR) link, a BT Long-Range (LR) link and a second BT SR link, the first BT SR link between the first BT audio device and the first BT mobile device, the BT LR link between the first BT mobile device and a second BT mobile device, and the second BT SR link between the second BT mobile device and the second BT audio device; to communicate a BT SR packet over the first BT SR link, the BT SR packet including a voice payload to be communicated between the first and second BT audio devices; and to communicate a BT LR packet including the voice payload over the BT LR link.

Abstract: For example, a Bluetooth (BT) apparatus may include a System on Chip (SoC), the SoC including an interface to a BT Lower Medium Access Control (MAC) (L-MAC) external to the SoC; and a BT Upper MAC (U-MAC) to generate setup information to configure one or more BT activities by the BT L-MAC, and to send the setup information to the BT L-MAC via the interface, the setup information to configure one or more wakeup criteria for the BT L-MAC to wake up the BT U-MAC, the one or more BT activities including at least a BT scan, wherein the BT U-MAC is configured to enter a power save mode and to wake up from the power save mode based on receipt of a wakeup indication from the BT L-MAC via the interface to the BT L-MAC.

Abstract: For example, an apparatus may be configured to cause a first Bluetooth (BT) mobile device to configure a P2P voice link for voice communication between first and second BT audio devices via a first BT Short-Range (SR) link, a BT Long-Range (LR) link and a second BT SR link, the first BT SR link between the first BT audio device and the first BT mobile device, the BT LR link between the first BT mobile device and a second BT mobile device, and the second BT SR link between the second BT mobile device and the second BT audio device; to communicate a BT SR packet over the first BT SR link, the BT SR packet including a voice payload to be communicated between the first and second BT audio devices; and to communicate a BT LR packet including the voice payload over the BT LR link.

Abstract: For example, a Bluetooth (BT) apparatus may include a System on Chip (SoC), the SoC including an interface to a BT Lower Medium Access Control (MAC) (L-MAC) external to the SoC; and a BT Upper MAC (U-MAC) to generate setup information to configure one or more BT activities by the BT L-MAC, and to send the setup information to the BT L-MAC via the interface, the setup information to configure one or more wakeup criteria for the BT L-MAC to wake up the BT U-MAC, the one or more BT activities including at least a BT scan, wherein the BT U-MAC is configured to enter a power save mode and to wake up from the power save mode based on receipt of a wakeup indication from the BT L-MAC via the interface to the BT L-MAC.

Abstract: A demodulator including a peak sampler to control an ADC or a digital resampler to sample a carrier signal in an unmodulated state at peaks, and to sample the carrier signal in a modulated state at a phase of the unmodulated state; and an envelope builder to determine an envelope signal based on differentials between maximum and minimum peaks of respective cycles of the sampled carrier signal. Further, a demodulator having an offset estimator to estimate in-phase and quadrature components of a carrier signal in an unmodulated state to determine in-phase and quadrature component offsets; a load modulated signal estimator to estimate in-phase and quadrature components of a load modulated signal by removing the in-phase and quadrature component offsets from in-phase and quadrature component samples of the carrier signal; and an envelope builder to build an envelope signal by combining the in-phase and quadrature components of the load modulated signal.

Abstract: Described herein are architectures, platforms and methods for implementing low-power detection of a near field communication (NFC) card or tags. In particular, an NFC antenna is integrated with at least one transistor to form an oscillator. A substantial decrease in oscillator's oscillation indicates presence or detection of the NFC card or tag.

Abstract: A demodulator including a peak sampler to control an ADC or a digital resampler to sample a carrier signal in an unmodulated state at peaks, and to sample the carrier signal in a modulated state at a phase of the unmodulated state; and an envelope builder to determine an envelope signal based on differentials between maximum and minimum peaks of respective cycles of the sampled carrier signal. Further, a demodulator having an offset estimator to estimate in-phase and quadrature components of a carrier signal in an unmodulated state to determine in-phase and quadrature component offsets; a load modulated signal estimator to estimate in-phase and quadrature components of a load modulated signal by removing the in-phase and quadrature component offsets from in-phase and quadrature component samples of the carrier signal; and an envelope builder to build an envelope signal by combining the in-phase and quadrature components of the load modulated signal.

Abstract: Described herein are architectures, platforms and methods for implementing low-power detection of a near field communication (NFC) card or tags. In particular, an NFC antenna is integrated with at least one transistor to form an oscillator. A substantial decrease in oscillator's oscillation indicates presence or detection of the NFC card or tag.

Abstract: Some embodiments include apparatus and methods having an amplifier, a capacitor network coupled to the amplifier, and switching circuitry coupled to the amplifier and the capacitor network. The switching circuit is configured to successively apply a selected reference voltage selected from among a first reference voltage, a second reference voltage, and a third reference voltage to the capacitor network in response to a digital input code to generate an output voltage. Additional embodiments are disclosed.

Abstract: An auto trimming oscillator includes a Successive Approximation Register (SAR), a frequency detector and an n-bit comparator. The SAR is used to iteratively trim the oscillator output clock frequency based on a difference between a reference clock frequency and the oscillator output clock frequency. The oscillator is trimmed to deliver a clock frequency which is a closest match to the reference clock frequency.

Abstract: Some embodiments include apparatus and methods having an amplifier, a capacitor network coupled to the amplifier, and switching circuitry coupled to the amplifier and the capacitor network. The switching circuit is configured to successively apply a selected reference voltage selected from among a first reference voltage, a second reference voltage, and a third reference voltage to the capacitor network in response to a digital input code to generate an output voltage. Additional embodiments are disclosed.

Abstract: A method and system for quantizing a vector corresponding to an input signal is described. The vector has a plurality of components corresponding to an N-dimensional space. In one aspect, the method and system include recursively dividing the space into equal spaces having one dimension less than a previous recursion until end spaces are formed. Each end space is two-dimensional. The method and system also include asynchronously comparing the components in each end space to determine a sub-space of a particular end space having a closest match to the vector. In another aspect, the method and system include providing tree(s) including a plurality of nodes and asynchronously traversing the tree(s) to determine a closest match to the vector. The nodes correspond to ANDs of comparisons between the components. Each comparison determines whether a first component is greater than a second component.

Abstract: An auto trimming oscillator includes a Successive Approximation Register (SAR), a frequency detector and an n-bit comparator. The SAR is used to iteratively trim the oscillator output clock frequency based on a difference between a reference clock frequency and the oscillator output clock frequency. The oscillator is trimmed to deliver a clock frequency which is a closest match to the reference clock frequency.

Abstract: A method and system for quantizing a vector corresponding to an input signal is described. The vector has a plurality of components corresponding to an N-dimensional space. In one aspect, the method and system include recursively dividing the space into equal spaces having one dimension less than a previous recursion until end spaces are formed. Each end space is two-dimensional. The method and system also include asynchronously comparing the components in each end space to determine a sub-space of a particular end space having a closest match to the vector. In another aspect, the method and system include providing tree(s) including a plurality of nodes and asynchronously traversing the tree(s) to determine a closest match to the vector. The nodes correspond to ANDs of comparisons between the components. Each comparison determines whether a first component is greater than a second component.