Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: Methods and wireless communication devices for notifying a peer device about duty cycle transmission budget exhaustion. An embodiment transmits a first data frame carrying a power management bit to a peer device when a transmission budget is about to be exhausted, updates the transmission budget over time, and transmits a second data frame carrying a power management bit to the peer device to resume communication according to the updated transmission budget. Another embodiment inserts a Restricted access window Parameter Set (RPS) Information Element (IE) into a beacon frame to reserve a time slice when a transmission budget is about to be exhausted and transmits the beacon frame on a wireless channel to notify peer devices transmission on the wireless channel in the time slice is prohibited.

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: The present disclosure provides an electronic circuit having one reference current terminal arranged to connect to a reference current generator, an MOS current mirror stage, an MOS push-pull amplifier stage operatively coupled to the current mirror stage and the current mode amplifier stage.

Abstract: Methods and wireless communication devices for sleep time management comprise determining a current remaining time before performing a scheduled activity, comparing the current remaining time with a predetermined sleep duration, setting a current sleep time according to a predefined setting and the current remaining time and updating the current remaining time according to the current sleep time in response to the current remaining time being greater than the predetermined sleep duration, or setting the current sleep time to the current remaining time and updating the current remaining time to zero in response to the current remaining time being less than or equal to the predetermined sleep duration. The methods and wireless communication devices further comprise entering a power management mode for a period of time equal to the current sleep time and exiting from the power management mode to perform a calibration operation after the current sleep time.

Abstract: Systems and techniques are provided for performing wireless communications. In some aspects, calibration of a station (STA) in a wireless communication network can be managed based on receiving a beacon frame that includes a Restricted Access Window (RAW) Parameter Set (RPS) Information Element (IE), and determining that an Association Identity (AID) indicated in the RPS IE of the received beacon frame matches a calibration AID associated with the STA. A process can further include determining a RAW based on the RPS IE and scheduling a RAW clear medium calibration (RAW-cmc) event within the RAW, based at least in part on the determination that the AID indicated in the RPS IE matches the calibration AID. Subsequently, the scheduled RAW-cmc event within the RAW can be used to perform calibration for the STA as scheduled.

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: Methods and wireless communication devices for processing wireless signals with adaptive frequency shift correction. An embodiment of the method includes receiving a wireless signal by the receiver, performing packet detection to detect at least a portion of a preamble part of a current frame carried in the wireless signal according to a default frequency output from a Phase Lock Loop (PLL), estimating a frequency offset between the default frequency and a frequency used to carry information in the preamble part of the current frame, reconfiguring the PLL according to the frequency offset to output a compensated frequency, and processing a packet part of the current frame using the compensated frequency output from the PLL. The method may further mitigate the impact of a residual Direct current (DC) component by filtering the wireless signal based on the compensated frequency.

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: Systems and techniques are provided for performing wireless communications. In some aspects, a wireless communication device can transmit one or more first packets starting from a first time point. The wireless communication device can determine a time-on-air of the one or more first packets, wherein the time-on-air of the one or more first packets is an airtime associated with transmitting the one or more first packets. The wireless communication device can calculate an off-air time corresponding to transmission of the one or more first packets, wherein the off-air time is calculated based on the time-on-air and a duty cycle associated with the wireless communication device. The wireless communication device can delay sending one or more second packets until after a second time point later than the first time point, the second time point determined based on a sum of the first time point, the time-on-air, and the calculated off-air time.

Abstract: The disclosure is directed to a system and methods for waking-up a wireless receiver on a wireless network. The method includes the steps of: listening, by the wireless receiver, for signals in a predetermined frequency band periodically and decoding a wake-up key; validating the wake-up key by correlating the wake-up key with values stored in a memory using a first processing device; if the wake-up key is validated, decoding at least one PHY Protocol Data Unit (PPDU) and checking the value of one or more bits of the PPDU to validate the decoded PPDU as a wake-up PPDU; if the wake-up packet is validated, decoding a wake-up address and comparing the wake-up address to the station (STA) wake-up address; if the decoded wake-up address matches the STA wake-up address, powering-up a second processing device and confirming wake-up by exchanging an encrypted frame with Access Point (AP).

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: The present disclosure provides a method for estimating timing and/or frequency of a wireless signal; the method including the steps: receiving a digitally modulated signal; extracting a plurality of signal samples associated with a short training field (STF) of a PHY protocol data unit (PPDU) of an 802.11 frame; performing correlation operations on the plurality of signal samples to generate a predetermined number of correlation peaks; comparing the generated correlation peaks with a variable dynamic threshold; and calculating timing and/or frequency of the digitally modulated signal using the outcome of the comparing step.

Abstract: The disclosure is directed to a system and methods for waking-up a wireless receiver on a wireless network. The method includes the steps of: listening, by the wireless receiver, for signals in a predetermined frequency band periodically and decoding a wake-up key; validating the wake-up key by correlating the wake-up key with values stored in a memory using a first processing device; if the wake-up key is validated, decoding at least one PHY Protocol Data Unit (PPDU) and checking the value of one or more bits of the PPDU to validate the decoded PPDU as a wake-up PPDU; if the wake-up packet is validated, decoding a wake-up address and comparing the wake-up address to the station (STA) wake-up address; if the decoded wake-up address matches the STA wake-up address, powering-up a second processing device and confirming wake-up by exchanging an encrypted frame with Access Point (AP).

Abstract: The present disclosure provides a method for managing a sleep-mode of an electronic device that includes a processor, a memory and a communication interface configured to enable communication with a sleep-client device; the electronic device being arranged to enter the sleep-mode in predetermined circumstances to reduce power consumption; the method comprising the steps of: the electronic device modifying a value of a memory location associated with the communication interface; and the sleep-client device, reading a value of the memory location associated with the communication interface prior to transmitting data to the electronic device via the communication interface; wherein the memory location is representative of the availability of the electronic device to receive data via the communication interface.

Abstract: Systems and techniques are provided for performing wireless communications. In some aspects, an access point (AP) determines if buffered data traffic is available that will be advertised to one or more wireless communication devices using a beacon frame scheduled for broadcast by the AP. The AP broadcasts a pre-determined frame in response to determining buffered data traffic is not available, and the AP may skip broadcasting an upcoming beacon frame associated with the pre-determined frame. For example, the AP broadcasts the upcoming beacon after broadcasting the pre-determined frame when there is a change of configuration or when a resynchronization interval associated with the one or more wireless communication devices has been exceeded.

Abstract: Systems and techniques are provided for performing wireless communications. In some aspects, an access point (AP) determines if buffered data traffic is available that will be advertised to one or more wireless communication devices using a beacon frame scheduled for broadcast by the AP. The AP broadcasts a pre-determined frame in response to determining buffered data traffic is not available before broadcasting the beacon frame. A wireless communication device exits a low-power mode to receive an upcoming beacon frame or receive a pre-determined frame broadcast by the AP. Based on receiving the pre-determined frame, the wireless communication device determines that the upcoming beacon frame does not advertise buffered data traffic addressed to the wireless communication device and returns to the low-power mode after decoding at least a portion of the pre-determined frame.

Abstract: The present disclosure is directed to a digital phase-locked loop frequency synthesizer including: a digitally controlled voltage-controlled oscillator (DCO); a reference oscillator; a digital phase detector; a DCO control module comprising a plurality of registers each arranged to control the frequency of the signal with a predetermined resolution; a first feedback loop arranged to provide a first feedback path between the output of the DCO and the digital phase detector; and a second feedback loop arranged to provide a second feedback path between the first register output and the second register input, the second feedback loop comprising an adder module arranged to change a value of the second register based on the first register output to maximize a DCO frequency output range provided by the first register.

Abstract: The present disclosure provides an electronic circuit having one reference current terminal arranged to connect to a reference current generator, an MOS current mirror stage, an MOS push-pull amplifier stage operatively coupled to the current mirror stage and the current mode amplifier stage.