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WO2018190898A1 - Transition de mode radio d'activation (wur) - Google Patents

Transition de mode radio d'activation (wur) Download PDF

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Publication number
WO2018190898A1
WO2018190898A1 PCT/US2017/054019 US2017054019W WO2018190898A1 WO 2018190898 A1 WO2018190898 A1 WO 2018190898A1 US 2017054019 W US2017054019 W US 2017054019W WO 2018190898 A1 WO2018190898 A1 WO 2018190898A1
Authority
WO
WIPO (PCT)
Prior art keywords
sta
wake
wur mode
packet
wur
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2017/054019
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English (en)
Inventor
Po-Kai Huang
Minyoung Park
Robert J. Stacey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2018190898A1 publication Critical patent/WO2018190898A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is leader and terminal is follower using a pre-established activity schedule, e.g. traffic indication frame
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0229—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where the received signal is a wanted signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Embodiments pertain to wireless networks and wireless
  • Some embodiments relate to wireless local area networks
  • Wi-Fi networks including networks operating in accordance with the IEEE 802.11 family of standards.
  • Some embodiments relate to IEEE 802.11 ax and/or a low power communications standards, e.g., Bluetooth.
  • Some embodiments relate to methods, computer readable media, and apparatus for wake up radio (WUR) mode transition.
  • WUR wake up radio
  • WLAN wireless local-area network
  • FIG. 1 is a block diagram of a radio architecture in accordance with some embodiments
  • FIG. 2 illustrates a front-end module circuitry for use in the radio architecture of FIG. 1 in accordance with some embodiments
  • FIG. 3 illustrates a radio IC circuitry for use in the radio architecture of FIG. 1 in accordance with some embodiments
  • FIG. 4 illustrates a baseband processing circuitry for use in the radio architecture of FIG. 1 in accordance with some embodiments
  • FIG. 5 illustrates a wireless network in accordance with some embodiments
  • FIG. 6 illustrates a block diagram of an example machine upon which any one or more of the operationsAechniques (e.g., methodologies) discussed herein may perform;
  • FIG. 7 illustrates a block diagram of an example wireless device upon which any one or more of the techniques (e.g., methodologies or operations) discussed herein may perform;
  • FIG. 8 illustrates an example of a Low Power Wake Up Receiver
  • LP-WUR for Wi-Fi, e.g. (IEEE 802.11) device, in accordance with some embodiments
  • FIGS.9A-B illustrate an example of power save mode (PSM), in accordance with some embodiments.
  • FIGS. 10A-B illustrate an example of power-save polling (PSM), in accordance with some embodiments
  • FIGS. 11 A-B illustrate an example of unscheduled automatic power save delivery (U-APSD), in accordance with some embodiments
  • FIG. 12 illustrates an example of a target wait time (TWT) with default mode being in the WUR mode after receiving wake-up packet under general STA1/STA2 model, in accordance with some embodiments
  • FIG. 13 illustrates an example of a TWT with default mode being out of the WUR mode after receiving wake-up packet under general STA1/STA2 model, in accordance with some embodiments
  • FIGS. 14A-B illustrate an example of a U-APSD with default mode being in the WUR mode after receiving wake-up packet under AP/STA model, in accordance with some embodiments.
  • FIGS. 15A-B illustrate an example of a U-APSD with default mode being out of the WUR mode after receiving wake-up packet under AP/STA model, in accordance with some embodiments.
  • FIG. 1 is a block diagram of a radio architecture 100 in accordance with some embodiments.
  • Radio architecture 100 may include radio front-end module (FEM) circuitry 104, radio 1C circuitry 106 and baseband processing circuitry 108.
  • Radio architecture 100 as shown includes both Wireless Local Area Network (WLAN) functionality and Bluetooth (BT) functionality although embodiments are not so limited.
  • WLAN Wireless Local Area Network
  • BT Bluetooth
  • FEM circuitry 104 may include a WLAN or Wi-Fi FEM circuitry
  • the WLAN FEM circuitry 104A may include a receive signal path comprising circuitry configured to operate on WLAN RF signals received from one or more antennas 101, to amplify the received signals and to provide the amplified versions of the received signals to the WLAN radio IC circuitry 106 A for further processing.
  • the BT FEM circuitry 104B may include a receive signal path which may include circuitry configured to operate on BT RF signals received from one or more antennas 101, to amplify the received signals and to provide the amplified versions of the received signals to the BT radio IC circuitry 106B for further processing.
  • FEM circuitry 104 A may also include a transmit signal path which may include circuitry configured to amplify WLAN signals provided by the radio IC circuitry 106A for wireless transmission by one or more of the antennas 1.01.
  • FEM circuitry 104B may also include a transmit signal path which may include circuitry configured to amplify BT signals provided by the radio IC circuitry 106B for wireless transmission by the one or more antennas.
  • FIG. 1 In the embodiment of FIG.
  • FEM 104A and FEM 104B are shown as being distinct from one another, embodiments are not so limited, and include within their scope the use of an FEM (not shown) that includes a transmit path and/or a receive path for both WLAN and BT signals, or the use of one or more FEM circuitries where at least some of the FEM circuitries share transmit and/or receive signal paths for both WLAN and BT signals.
  • Radio IC circuitry 106 as shown may include WLAN radio IC circuitry 106A and BT radio IC circuitry 106B.
  • the WLAN radio IC circuitry 106A may include a receive signal path which may include circuitry to down-convert WLAN RF signals received from the FEM circuitry 104 A and provide baseband signals to WLAN baseband processing circuitry 108 A.
  • BT radio IC circuitry 106B may in turn include a receive signal path which may include circuitry to down- convert BT RF signals received from the FEM circuitry 104B and provide baseband signals to BT baseband processing circuitry 108B.
  • WLAN radio IC circuitry 106 A may also include a transmit signal path which may include circuitry to up-convert WLAN baseband signals provided by the WLAN baseband processing circuitry 108 A and provide WLAN RF output signals to the FEM circuitry 104A for subsequent wireless transmission by the one or more antennas 101.
  • BT radio IC circuitry 106B may also include a transmit signal path which may include circuitry to up-convert BT baseband signals provided by the BT baseband processing circuitry 108B and provide BT RF output signals to the FEM circuitry 104B for subsequent wireless transmission by the one or more antennas 101.
  • radio IC circuitries 106 A and 106B are shown as being distinct from one another, embodiments are not so limited, and include within their scope the use of a radio IC circuitry (not shown) that includes a transmit signal path and/or a receive signal path for both WLAN and BT signals, or the use of one or more radio IC circuitries where at least some of the radio IC circuitries share transmit and/or receive signal paths for both WLAN and BT signals.
  • Baseband processing circuity 108 may include a WLAN baseband processing circuitry 108 A and a BT baseband processing circuitry 108B.
  • the WLAN baseband processing circuitry 108 A may include a memory, such as, for example, a set of RAM arrays in a Fast Fourier Transform or Inverse Fast Fourier Transform block (not shown) of the WLAN baseband processing circuitry 108 A.
  • Each of the WLAN baseband circuitry 108 A and the BT baseband circuitry 108B may further include one or more processors and control logic to process the signals received from the corresponding WLAN or BT receive signal path of the radio IC circuitry 106, and to also generate corresponding WLAN or BT baseband signals for the transmit signal path of the radio IC circuitry 106.
  • Each of the baseband processing circuitries 108 A and 108B may further include physical layer (PHY) and medium access control layer (MAC) circuitry, and may further interface with application processor 111 for generation and processing of the baseband signals and for controlling operations of the radio IC circuitry 106.
  • PHY physical layer
  • MAC medium access control layer
  • WLAN-BT coexistence circuitry 113 may include logic providing an interface between the WLAN baseband circuitry 108 A and the BT baseband circuitry 108B to enable use cases requiring WLAN and BT coexistence.
  • a switch 103 may be provided between the WLAN FEM circuitry 104 A and the BT FEM circuitry 104B to allow switching between the WLAN and BT radios according to application needs.
  • the antennas 101 are depicted as being respectively connected to the WLAN FEM circuitry 104A and the BT FEM circuitry 104B, embodiments include within their scope the sharing of one or more antennas as between the WLAN and BT FEMs, or the provision of more than one antenna connected to each of FEM 104A or 104B.
  • the front-end module circuitry 104 the radio
  • IC circuitry 106, and baseband processing circuitry 108 may be provided on a single radio card, such as wireless radio card 102.
  • the one or more antennas 1.01, the FEM circuitry 1.04 and the radio IC circuitry 106 may be provided on a single radio card.
  • the radio IC circuitry 106 and the baseband processing circuitry 108 may be provided on a single chip or integrated circuit (IC), such as IC 112.
  • the wireless radio card 102 may include a
  • the radio architecture 100 may be configured to receive and transmit orthogonal frequency division multiplexed (OFDM) or orthogonal frequency division multiple access (OFDMA) communication signals over a multicarrier communication channel.
  • OFDM orthogonal frequency division multiplexed
  • OFDMA orthogonal frequency division multiple access
  • radio architecture 100 may be part of a Wi-Fi communication station (ST A) such as a wireless access point (AP), a base station or a mobile device including a Wi-Fi device.
  • radio architecture 100 may be configured to transmit and receive signals in accordance with specific communication standards and/or protocols, such as any of the Institute of Electrical and Electronics Engineers (IEEE) standards including, IEEE 802.1 ln-2009, IEEE 802.11-2012, IEEE 802.11-2016, IEEE 802.1 lac, and/or IEEE 802.1 lax standards and/or proposed specifications for
  • IEEE Institute of Electrical and Electronics Engineers
  • Radio architecture 100 may also be suitable to transmit and/or receive communications in accordance with other techniques and standards.
  • the radio architecture 100 may be configured for high-efficiency (HE) Wi-Fi (HEW) communications in accordance with the IEEE 802.1 lax standard.
  • the radio architecture 100 may be configured to communicate in accordance with an OFDMA technique, although the scope of the embodiments is not limited in this respect.
  • the radio architecture 100 may be configured to transmit and receive signals transmitted using one or more other modulation techniques such as spread spectrum modulation (e.g., direct sequence code division multiple access (DS-CDMA) and/or frequency hopping code division multiple access (FH-CDMA)), time-division multiplexing (TDM) modulation, and/or frequency-division multiplexing (EDM) modulation, although the scope of the embodiments is not limited in this respect.
  • spread spectrum modulation e.g., direct sequence code division multiple access (DS-CDMA) and/or frequency hopping code division multiple access (FH-CDMA)
  • TDM time-division multiplexing
  • EDM frequency-division multiplexing
  • the BT baseband circuitry 108B may be compliant with a Bluetooth (BT) connectivity standard such as Bluetooth, Bluetooth 4.0 or Bluetooth S.0, or any other iteration of the Bluetooth Standard.
  • BT Bluetooth
  • the radio architecture 100 may be configured to establish a BT synchronous connection oriented (SCO) link and/or a BT low energy (BT LE) link.
  • SCO BT synchronous connection oriented
  • BT LE BT low energy
  • the radio architecture 100 may be configured to establish an extended SCO (eSCO) link for BT communications, although the scope of the embodiments is not limited in this respect.
  • the radio architecture may be configured to engage in a BT Asynchronous Connection-Less (ACL)
  • BT radio card and WLAN radio card may be combined on a single wireless radio card, such as single wireless radio card 102, although embodiments are not so limited, and include within their scope discrete WLAN and BT radio cards
  • the radio-architecture 100 may include other radio cards, such as a cellular radio card configured for cellular (e.g., 3GPP such as LTE, LTE-Advanced or 5G communications).
  • the radio architecture 100 may be configured for communication over various channel bandwidths including bandwidths having center frequencies of about 900 MHz, 2.4 GHz, 5 GHz, and bandwidths of about 1 MHz, 2 MHz, 2.5 MHz, 4 MHz, 5MHz, 8 MHz, 10 MHz, 16 MHz, 20 MHz, 40MHz, 80MHz (with contiguous bandwidths) or 80+80MHz (160MHz) (with non-contiguous bandwidths).
  • a 320 MHz channel bandwidth may be used. The scope of the embodiments is not limited with respect to the above center frequencies however.
  • FIG. 2 illustrates FEM circuitry 200 in accordance with some embodiments.
  • the FEM circuitry 200 is one example of circuitry that may be suitable for use as the WLAN and/or BT FEM circuitry 104A/104B (FIG. 1), although other circuitry configurations may also be suitable.
  • the FEM circuitry 200 may include a TX/RX switch 202 to switch between transmit mode and receive mode operation.
  • the FEM circuitry 200 may include a receive signal path and a transmit signal path.
  • the receive signal path of the FEM circuitry 200 may include a low-noise amplifier (LNA) 206 to amplify received RF signals 203 and provide the amplified received RF signals 207 as an output (e.g., to the radio IC circuitry 106 (FIG. 1)).
  • LNA low-noise amplifier
  • the transmit signal path of the circuitry 200 may include a power amplifier (PA) to amplify input RF signals 209 (e.g., provided by the radio IC circuitry 106), and one or more filters 212, such as band-pass filters (BPFs), low-pass filters (LPFs) or other types of filters, to generate RF signals 215 for subsequent transmission (e.g., by one or more of the antennas 101 (FIG. 1)).
  • PA power amplifier
  • BPFs band-pass filters
  • LPFs low-pass filters
  • FPFs low-pass filters
  • the FEM circuitry 200 may be configured to operate in either the 2.4 GHz frequency spectrum or the 5 GHz frequency spectrum.
  • the receive signal path of the FEM circuitry 200 may include a receive signal path duplexer 204 to separate the signals from each spectrum as well as provide a separate LNA 206 for each spectrum as shown.
  • the transmit signal path of the FEM circuitry 200 may also include a power amplifier 210 and a filter 212, such as a BPF, a LPF or another type of filter for each frequency spectrum and a transmit signal path duplexer 214 to provide the signals of one of the different spectrums onto a single transmit path for subsequent transmission by the one or more of the antennas 101 (FIG. 1).
  • BT communications may utilize the 2.4 GHZ signal paths and may utilize the same FEM circuitry 200 as the one used for WLAN communications.
  • FIG. 3 illustrates radio IC circuitry 300 in accordance with some embodiments.
  • the radio IC circuitry 300 is one example of circuitry that may be suitable for use as the WLAN or BT radio IC circuitry 106A/106B (FIG. 1 ), although other circuitry configurations may also be suitable.
  • the radio IC circuitry 300 may include a receive signal path and a transmit signal path.
  • the receive signal path of the radio IC circuitry 300 may include at least mixer circuitry 302, such as, for example, down-conversion mixer circuitry, amplifier circuitry 306 and filter circuitry 308.
  • the transmit signal path of the radio IC circuitry 300 may include at least filter circuitry 312 and mixer circuitry 314, such as, for example, up-conversion mixer circuitry.
  • Radio IC circuitry 300 may also include synthesizer circuitry 304 for synthesizing a frequency 305 for use by the mixer circuitry 302 and the mixer circuitry 314.
  • the mixer circuitry 302 and/or 314 may each, according to some embodiments, be configured to provide direct conversion functionality.
  • FIG. 3 illustrates only a simplified version of a radio IC circuitry, and may include, although not shown, embodiments where each of the depicted circuitries may include more than one component.
  • mixer circuitry 320 and or 314 may each include one or more mixers
  • filter circuitries 308 and/or 312 may each include one or more filters, such as one or more BPFs and/or LPFs according to application needs.
  • mixer circuitries when mixer circuitries are of the direct-conversion type, they may each include two or more mixers.
  • mixer circuitry 302 may be configured to down-convert RF signals 207 received from the FEM circuitry 104 (FIG. 1) based on the synthesized frequency 305 provided by synthesizer circuitry 304.
  • the amplifier circuitry 306 may be configured to amplify the down-converted signals and the filter circuitry 308 may include a LPF configured to remove unwanted signals from the down-converted signals to generate output baseband signals 307.
  • Output baseband signals 307 may be provided to the baseband processing circuitry 108 (FIG. 1) for further processing.
  • the output baseband signals 307 may be zero-frequency baseband signals, although this is not a requirement.
  • mixer circuitry 302 may comprise passive mixers, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 314 may be configured to up-convert input baseband signals 311 based on the synthesized frequency 305 provided by the synthesizer circuitry 304 to generate RF output signals 209 for the FEM circuitry 104.
  • the baseband signals 311 may be provided by the baseband processing circuitry 108 and may be filtered by filter circuitry 312.
  • the filter circuitry 312 may include a LPF or a BPF, although the scope of the embodiments is not limited in this respect.
  • the mixer circuitry 302 and the mixer circuitry 314 may each include two or more mixers and may be arranged for quadrature down-conversion and/or up-conversion respectively with the help of synthesizer 304.
  • the mixer circuitry 302 and the mixer circuitry 314 may each include two or more mixers each configured for image rejection (e.g., Hartley image rejection).
  • the mixer circuitry 302 and the mixer circuitry 314 may be arranged for direct down-conversion and/or direct up-conversion, respectively.
  • the mixer circuitry 302 and the mixer circuitry 314 may be configured for super-heterodyne operation, although this is not a requirement.
  • Mixer circuitry 302 may comprise, according to one embodiment: quadrature passive mixers (e.g., for the in-phase (I) and quadrature phase (Q) paths).
  • RF input signal 207 from FIG. 3 may be down-converted to provide I and Q baseband output signals to be sent to the baseband processor
  • Quadrature passive mixers may be driven by zero and ninety-degree time-varying LO switching signals provided by a quadrature circuitry which may be configured to receive a LO frequency (fLo) from a local oscillator or a synthesizer, such as LO frequency 305 of synthesizer 304 (FIG. 3).
  • the LO frequency may be the carrier frequency, while in other embodiments, the LO frequency may be a fraction of the carrier frequency (e.g., one-half the carrier frequency, one-third the carrier frequency).
  • the zero and ninety-degree time- varying switching signals may be generated by the synthesizer, although the scope of the embodiments is not limited in mis respect.
  • the LO signals may differ in duty cycle (the percentage of one period in which the LO signal is high) and/or offset (the difference between start points of the period). In some embodiments, the LO signals may have a 25% duty cycle and a 50% offset. In some embodiments, each branch of the mixer circuitry (e.g., the in-phase (I) and quadrature phase (Q) path) may operate at a 25% duty cycle, which may result in a significant reduction is power consumption.
  • I in-phase
  • Q quadrature phase
  • the RF input signal 207 may comprise a balanced signal, although the scope of the embodiments is not limited in this respect.
  • the I and Q baseband output signals may be provided to low-nose amplifier, such as amplifier circuitry 306 (FIG. 3) or to filter circuitry 308 (FIG. 3).
  • the output baseband signals 307 and the input baseband signals 311 may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternate embodiments, the output baseband signals 307 and the input baseband signals 311 may be digital baseband signals. In these alternate embodiments, the radio IC circuitry may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry.
  • ADC analog-to-digital converter
  • DAC digital-to-analog converter
  • the synthesizer circuitry 304 may be a fractional-N synthesizer or a fractional N/N+l synthesizer, although the scope of the embodiments is not limited in this respect as other types of frequency synthesizers may be suitable.
  • synthesizer circuitry 304 may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider.
  • the synthesizer circuitry 304 may include digital synthesizer circuitry.
  • An advantage of using a digital synthesizer circuitry is that, although it may still include some analog components, its footprint may be scaled down much more than the footprint of an analog synthesizer circuitry.
  • frequency input into synthesizer circuity 304 may be provided by a voltage controlled oscillator (VCO), although that is not a requirement.
  • VCO voltage controlled oscillator
  • a divider control input may further be provided by either the baseband processing circuitry 108 (FIG. 1 ) or the application processor 111 (FIG. 1 ) depending on the desired output frequency 305.
  • a divider control input (e.g., N) may be determined from a look-up table (e.g., within a Wi-Fi card) based on a channel number and a channel center frequency as determined or indicated by the application processor 111.
  • synthesizer circuitry 304 may be configured to generate a carrier frequency as the output frequency 305, while in other
  • the output frequency 305 may be a fraction of the carrier frequency (e.g., one-half the carrier frequency, one-third the carrier frequency). In some embodiments, the output frequency 305 may be a LO frequency (fLo).
  • FIG. 4 illustrates a functional block diagram of baseband processing circuitry 400 in accordance with some embodiments.
  • the baseband processing circuitry 400 is one example of circuitry that may be suitable for use as the baseband processing circuitry 108 (FIG. 1), although other circuitry configurations may also be suitable.
  • the baseband processing circuitry 400 may include a receive baseband processor (RX BBP) 402 for processing receive baseband signals 309 provided by the radio IC circuitry 106 (FIG. 1) and a transmit baseband processor (TX BBP) 404 for generating transmit baseband signals 311 for the radio IC circuitry 106.
  • RX BBP receive baseband processor
  • TX BBP transmit baseband processor
  • the baseband processing circuitry 400 may also include control logic 406 for coordinating the operations of the baseband processing circuitry 400.
  • the baseband processing circuitry 400 may include ADC 410 to convert analog baseband signals received from the radio IC circuitry 106 to digital baseband signals for processing by the RX BBP 402.
  • the baseband processing circuitry 400 may also include DAC 412 to convert digital baseband signals from the TX BBP 404 to analog baseband signals.
  • the transmit baseband processor 404 may be configured to generate the OFDM or OFDMA signals as appropriate for transmission by performing an inverse fast Fourier transform (IFFT).
  • the receive baseband processor 402 may be configured to process received OFDM signals or OFDMA signals by performing an FFT.
  • the receive baseband processor 402 may be configured to detect the presence of an OFDM signal or OFDMA signal by performing an autocorrelation, to detect a preamble, such as a short preamble, and by performing a cross-correlation, to detect a long preamble.
  • the preambles may be part of a predetermined frame structure for Wi-Fi communication.
  • the antennas 101 may each comprise one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas or other types of antennas suitable for transmission of RF signals.
  • the antennas may be effectively separated to take advantage of spatial diversity and the different channel characteristics that may result.
  • Antennas 101 may each include a set of phased-array antennas, although embodiments are not so limited.
  • the radio-architecture 100 is illustrated as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and/or other hardware elements.
  • processing elements including digital signal processors (DSPs), and/or other hardware elements.
  • some elements may comprise one or more microprocessors, DSPs, field-programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), radio-frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein.
  • the functional elements may refer to one or more processes operating on one or more processing elements.
  • FIG. 5 illustrates an example of a WLAN 100 in accordance with some embodiments.
  • the WLAN may comprise a basis sendee set (BSS) 100 that may include one or more HE AP 502, which may be APs, one or more high efficiency (HE) wireless stations (HE stations or HE ST As) (e.g., IEEE 802.11 ax) HE stations 104, a plurality of legacy (e.g., IEEE 802.1.1 n/ac) devices 506, a plurality of IoT devices 508 (e.g., IEEE 802.11 ax), and one or more sensor hubs 510.
  • BSS basis sendee set
  • HE high efficiency wireless stations
  • HE stations or HE ST As e.g., IEEE 802.11 ax
  • legacy e.g., IEEE 802.1.1 n/ac
  • IoT devices 508 e.g., IEEE 802.11 ax
  • sensor hubs 510 e.g., IEEE 802.11 a
  • the HE AP 502 may be an AP using the IEEE 802.11 to transmit and receive.
  • the HE AP 502 may be a base station.
  • the HE AP 502 may use other communications protocols as well as the IEEE 802.11 protocol.
  • the IEEE 802.11 protocol may be IEEE 802.1 lax.
  • the IEEE 802.11 protocol may include using orthogonal frequency division multiple-access (OFDMA), time division multiple access (TDMA), and/or code division multiple access (CDMA).
  • the IEEE 802.11 protocol may include a multiple access technique.
  • the IEEE 802.11 protocol may include space-division multiple access (SDMA) and/or multiple-user multiple-input multiple-output (MU-MMO).
  • SDMA space-division multiple access
  • MU-MMO multiple-user multiple-input multiple-output
  • the HE AP 502 may be a virtual HE AP 502 shares hardware resources with another wireless device such as another HE AP 502.
  • the legacy devices 506 may operate in accordance with one or more of IEEE 802.11 a/b/g/n/ac/ad/af/ah/aj/ab, or another legacy wireless communication standard.
  • the legacy devices 506 may be ST As or IEEE ST As.
  • the HE stations 504 may be wireless transmit and receive devices such as cellular telephone, smart telephone, handheld wireless device, wireless glasses, wireless watch, wireless personal device, tablet, a portable wireless device, or another device that may be transmitting and receiving using the IEEE 802.11 protocol such as IEEE 802.1 lax or another wireless protocol.
  • the HE stations 504 may be termed high efficiency wireless local-area network (HEW) stations.
  • HEW high efficiency wireless local-area network
  • the HE AP 502 may communicate with legacy devices 506 in accordance with legacy IEEE 802.11 communication techniques.
  • the HE AP 502 may also be configured to communicate with HE stations 504 in accordance with legacy IEEE 802.1.1. communication techniques.
  • the IoT devices 508 may operate in accordance with IEEE 802.1. lax,
  • the IoT devices 508 may be, in some embodiments, narrow band devices that operate on a smaller sub-channel than the HE stations 504. For example, the IoT devices 508 may operate on 2.03 MHz or 4.06 MHz sub-channels. In some embodiments, the IoT devices 508 are not able to transmit on a full 20 MHz sub-channel to the HE AP 502 with sufficient power for the HE AP 502 to receive the transmission. In some embodiments, the IoT devices 508 are not able to receive on a 20 MHz sub-channel and must use a small sub- channel such as 2.03 MHz or 4.06 MHz sub-channel. In some embodiments, the IoT devices 508 may operate on a sub-channel with exactly 26 or 52 data sub-carriers. The IoT devices 508, in some embodiments, may be short-range, low-power devices.
  • the IoT devices 508 may be battery constrained.
  • the IoT devices 508 may be battery constrained.
  • the IoT devices 508 may be sensors designed to measure one or more specific parameters of interest such as temperature sensor, pressure sensor, humidity sensor, light sensor, etc.
  • the IoT devices 508 may be location-specific sensors. Some IoT devices 508 may be connected to a sensor hub 510. The IoT devices 508 may upload measured data from sensors to the sensor hub 510. The sensor hubs 510 may upload the data to an access gateway 512 that connects several sensor hubs 510 and can connect to a cloud sever or the Internet (not illustrated).
  • the HE AP 502 may act as the access gateway 512 in accordance with some embodiments.
  • the HE AP 502 may act as the sensor hub 510 in accordance with some embodiments.
  • the IoT device 508 may have identifiers that identify a type of data that is measured from the sensors. In some embodiments, the IoT device 508 may be able to determine a location of the IoT device 508 based on received satellite signals or received terrestrial wireless signals. [0061] In some embodiments, at least some of the IoT devices 508 need to consume very low average power in order to perform a packet exchange with the sensor hub 510 and/or access gateway 512. The IoT devices 508 may be densely deployed.
  • the IoT devices 508 may enter a power save mode and may exit the power save at intervals to gamer data from sensors and/or to upload the data to the sensor hub 510 or access gateway 512.
  • the HE AP 502 HE stations 504, legacy stations 506, IoT devices 508, access gateways 512, BluetoothTM devices, and/or sensor hubs 510 enter a power save mode and exit the power save mode periodically or at a pre-scheduled times to see if there is a packet for them to be received.
  • the HE AP 502, HE stations 504, legacy stations 506, IoT devices 508, access gateways 512, BluetoothTM devices, and/or sensor hubs 510 may remain in a power save mode until receiving a wake-up packet.
  • the bandwidth of a channel may be 20MHz, 40MHz, or 80MHz,
  • the bandwidth of a channel may be 1 MHz, 1.25MHz, 2.03MHz, 2.5MHz, 4.06 MHz, 5MHz and 10MHz, or a combination thereof or another bandwidth that is less or equal to the available bandwidth may also be used.
  • the bandwidth of the channels may be based on a number of active data subcarriers. In some embodiments the bandwidth of the channels is based on 26, 52, 106, 242, 484, 996, or 2x996 active data subcarriers or tones that are spaced by 20 MHz. In some embodiments the bandwidth of the channels is 256 tones spaced by 20 MHz. In some embodiments the channels are multiple of 26 tones or a multiple of 20 MHz. In some
  • a 20 MHz channel may comprise 242 active data subcarriers or tones, which may determine the size of a Fast Fourier Transform (FFT).
  • FFT Fast Fourier Transform
  • An allocation of a bandwidth or a number of tones or sub-carriers may be termed a resource unit (RU) allocation in accordance with some embodiments.
  • RU resource unit
  • the 26-subcarrier RU and 52-subcarrier RU are used in the 20 MHz, 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDM A HE PPDU formats.
  • the 106-subcarrier RU is used in the 20 MHz, 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats.
  • the 242-subcarrier RU is used in the 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats.
  • the 484-subcarrier RU is used in the 80 MHz, 1.60 MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats.
  • the 996-subcarrier RU is used in the 160 MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats.
  • a HE frame may be configured for transmitting a number of spatial streams, which may be in accordance with MU-MIMO and may be in accordance with OFDMA.
  • the HE AP 502, HE STA 504, and/or legacy device 506 may also implement different technologies such as code division multiple access (CDMA) 2000, CDMA 2000 IX, CDMA 2000 Evolution-Data Optimized (EV-DO), Interim Standard 2000 (1S-2000), Interim Standard 95 (IS-95), Interim Standard 856 (LS-856), Long Term Evolution (LTE), Global System for Mobile communications (GSM), Enhanced Data rates for GSM Evolution (EDGE), GSM EDGE (GERAN), IEEE 802.16 (i.e., Worldwide Interoperability for Microwave Access (WiMAX)), BlueTooth®, or other technologies.
  • CDMA code division multiple access
  • CDMA 2000 IX CDMA 2000 Evolution-Data Optimized
  • EV-DO Evolution-Data Optimized
  • IS-95 Interim Standard 95
  • LS-856 Interim Standard
  • a HE AP 502 may operate as a HE AP which may be arranged to contend for a wireless medium (e.g., during a contention period) to receive exclusive control of the medium for an HE control period.
  • the HE control period may be termed a transmission opportunity (TXOP).
  • the HE AP 502 may transmit a HE trigger frame, which may be a trigger packet or HE control and schedule transmission, at the beginning of the HEW control period.
  • the HE AP 502 may transmit a time duration of the TXOP and subchannel information.
  • HEW stations 504 may communicate with the HE AP 502 in accordance with a non-contention based multiple access technique such as OFDMA or MU-MIMO.
  • the HE control period may be a scheduled OFDMA technique, although this is not a requirement.
  • the multiple access technique may be a time- division multiple access (TDMA) technique or a frequency division multiple access (FDMA) technique.
  • the multiple access technique may be a space-division multiple access (SDMA) technique.
  • the HE station 504 and/or HE AP 502 may be configured to operate in accordance with IEEE 802.1 lmc.
  • the radio architecture of FIG. I is configured to implement the HE station 504 and/or the HE AP 502.
  • the front-end module circuitry of FIG. 2 is configured to implement the HE station 504 and/or the HE AP 502.
  • the radio IC circuitry of FIG. 3 is configured to implement the HE station 504 and/or the HE AP 502.
  • the base-band processing circuitry of FIG. 4 is configured to implement the HE station 504 and/or the HE AP 502.
  • the radio architecture of FIG. 1, the front- end module circuitry of FIG.2, the radio IC circuitry of FIG. 3, and/or the base-band processing circuitry of FIG. 4 may be configured to perform the methods and functions herein described in conjunction with FIGS. 1-15.
  • the HE AP 502 may also communicate with legacy stations 506, sensor hubs 510, access gateway 512, and/or HE stations 504 and may include one or more of the following: the radio architecture of FIG. 1, the front-end module circuitry of FIG. 2, the radio IC circuitry of FIG. 3, and/or the base-band processing circuitry of FIG. 4. [0072] The HE AP 502 may also communicate with legacy stations 506, sensor hubs 510, access gateway 512, and/or HE stations 504 in accordance with legacy IEEE 802.11 communication techniques.
  • a HE AP 502, access gateway 512, HE station 504, legacy station 506, IoT devices 508, and/or sensor hub 510 may be configured to perform the methods and functions herein described in conjunction with FIGS. 1-15.
  • an apparatus of a HE AP 502, an apparatus of an access gateway 512, an apparatus of a HE station 504, an apparatus of a legacy station 506, apparatus of an IoT devices 508, and/or an apparatus of a sensor hub 510 may be configured to perform the methods and functions herein described in conjunction with FIGS. 1-15.
  • Wi-Fi may refer to one or more of the IEEE 802.11 communication standards.
  • AP and STA may refer to HE access point 502 and/or HE station 504 as well as legacy devices 506.
  • a HE AP 502 or a HE STA 504 performing at least some functions of an HE AP 502 may be referred to as HE AP STA.
  • a HE STA 504 may be referred to as a HE non-AP STA.
  • a HE STA 504 may be referred to as either a HE AP STA and/or HE non-AP.
  • FIG. 6 illustrates a block diagram of an example machine 600 upon which any one or more of the operations/techniques (e.g., methodologies) discussed herein may perform.
  • the machine 600 may operate as a standalone device or may be connected (e.g., networked) to other machines.
  • the machine 600 may operate in the capacity of a server machine, a client machine, or both in server-client network environments.
  • the machine 600 may act as a peer machine in peer-to-peer (P2P) (or other distributed) network environment.
  • P2P peer-to-peer
  • the machine 600 may be a HE STAs 504 (FIG. 5), HE AP 502, IoT device 508, sensor hub 510, access gateway 512, or wireless device 700.
  • the machine 600 may be personal computer (PC), a tablet PC, a set-top box (STB), a personal digital assistant (PDA), a portable communications device, a mobile telephone, a smart phone, a web appliance, a network router, switch or bridge, or any machine capable of executing instructions (sequential or otherwise) that specify actions to be taken by that machine.
  • machine shall also be taken to include any collection of machines that individually or jointly execute a set (or multiple sets) of instructions to perform any one or more of the methodologies discussed herein, such as cloud computing, software as a service (SaaS), other computer cluster configurations.
  • cloud computing software as a service
  • SaaS software as a service
  • Machine 600 may include a hardware processor 602 (e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a main memory 604 and a static memory 606, some or all of which may communicate with each other via an interlink (e.g., bus) 608.
  • a hardware processor 602 e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof
  • main memory 604 e.g., main memory
  • static memory 606 e.g., static memory
  • main memory 604 includes Random Access
  • static memory 606 includes non-volatile memory, such as semiconductor memory devices (e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)) and flash memory devices; magnetic disks, such as internal hard disks and removable disks; magneto-optical disks; RAM; and CD-ROM and DVD-ROM disks.
  • semiconductor memory devices e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • flash memory devices e.g., Electrically Programmable Read-Only Memory (EPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • EPROM Electrically Programmable Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • flash memory devices e.g., Electrically Erasable Programmable Read-Only Memory (EEPROM)
  • flash memory devices e.g., Electrically Erasable Programm
  • the machine 600 may further include a display device 610, an input device 612 (e.g., a keyboard), and a user interface (UI) navigation device 614 (e.g., a mouse).
  • the display device 610, input device 612 and UI navigation device 614 may be a touch screen display.
  • the machine 600 may additionally include a mass storage (e.g., drive unit) 616, a signal generation device 618 (e.g., a speaker), a network interface device 620, and one or more sensors 621, such as a global positioning system (GPS) sensor, compass, accelerometer, or other sensor.
  • GPS global positioning system
  • the machine 600 may include an output controller 628, such as a serial (e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (HR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • a serial e.g., universal serial bus (USB), parallel, or other wired or wireless (e.g., infrared (HR), near field communication (NFC), etc.) connection to communicate or control one or more peripheral devices (e.g., a printer, card reader, etc.).
  • the processor 602 and/or instructions 624 may comprise processing circuitry and/or transceiver circuitry.
  • the storage device 616 may include a machine readable medium 622 on which is stored one or more sets of data structures or instructions 624 (e.g., software) embodying or utilized by any one or more of the techniques or functions described herein.
  • the instructions 624 may also reside, completely or at least partially, within the main memory 604, within static memory 606, or within the hardware processor 602 during execution thereof by the machine 600.
  • one or any combination of the hardware processor 602, the main memory 604, the static memory 606, or the storage device 61.6 may constitute machine readable media.
  • machine readable media may include: nonvolatile memory, such as semiconductor memory devices (e.g., EPROM or Flash memory devices).
  • nonvolatile memory such as semiconductor memory devices (e.g., EPROM or Flash memory devices).
  • EEPROM electrically erasable programmable read-only memory
  • flash memory devices such as internal hard disks and removable disks; magneto-optical disks; RAM; and CD-ROM and DVD-ROM disks.
  • machine readable medium 622 is illustrated as a single medium, the term ''machine readable medium” may include a single medium or multiple media (e.g., a centralized or distributed database, and/or associated caches and servers) configured to store the one or more instructions 624.
  • An apparatus of the machine 600 may be one or more of a hardware processor 602 (e.g., a central processing unit (CPU), a graphics processing unit (GPU), a hardware processor core, or any combination thereof), a main memory 604 and a static memory 606, sensors 621, network interface device 620, antennas 660, a display device 610, an input device 612, a UI navigation device 614, a mass storage 616, instructions 624, a signal generation device 618, and an output controller 628.
  • the apparatus may be configured to perform one or more of the methods and/or operations disclosed herein.
  • the apparatus may be intended as a component of the machine 600 to perform one or more of the methods and or operations disclosed herein, and/or to perform a portion of one or more of the methods and/or operations disclosed herein.
  • the apparatus may include a pin or other means to receive power.
  • the apparatus may include power conditioning hardware.
  • machine readable medium may include any medium that is capable of storing, encoding, or carrying instructions for execution by the machine 600 and that cause the machine 600 to perform any one or more of the techniques of the present disclosure, or that is capable of storing, encoding or carrying data structures used by or associated with such instructions.
  • Non-limiting machine readable medium examples may include solid-state memories, and optical and magnetic media.
  • Specific examples of machine readable media may include: nonvolatile memory, such as semiconductor memory devices (e.g., Electrically
  • EPROM Electrically Erasable Programmable Read-Only Memory
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • flash memory devices such as internal hard disks and removable disks; magneto-optical disks; Random Access
  • machine readable media may include non-transitory machine readable media.
  • machine readable media may include machine readable media that is not a transitory propagating signal.
  • the instructions 624 may further be transmitted or received over a communications network 626 using a transmission medium via the network interface device 620 utilizing any one of a number of transfer protocols (e.g., frame relay, internet protocol (IP), transmission control protocol (TCP), user datagram protocol (UDP), hypertext transfer protocol (HTTP), etc.).
  • transfer protocols e.g., frame relay, internet protocol (IP), transmission control protocol (TCP), user datagram protocol (UDP), hypertext transfer protocol (HTTP), etc.
  • Example communication networks may include a local area network (LAN), a wide area network (WAN), a packet data network (e.g., the Internet), mobile telephone networks (e.g., cellular networks), Plain Old Telephone (POTS) networks, and wireless data networks (e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards known as Wi-Fi®, IEEE 802.16 family of standards known as WiMax®), IEEE 802.15.4 family of standards, a Long Term Evolution (LTE) family of standards, a Universal Mobile Telecommunications System (UMTS) family of standards, peer- to-peer (P2P) networks, among others.
  • LAN local area network
  • WAN wide area network
  • POTS Plain Old Telephone
  • wireless data networks e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards known as Wi-Fi®, IEEE 802.16 family of standards known as WiMax®
  • IEEE 802.15.4 family of standards e.g., Institute of Electrical and Electronics Engineers (IEEE
  • the network interface device 620 may include one or more physical jacks (e.g., Ethernet, coaxial, or phone jacks) or one or more antennas to connect to the communications network 626.
  • the network interface device 620 may include one or more antennas 660 to wirelessly
  • the network interface device 620 may wirelessly communicate using Multiple User MIMO techniques.
  • transmission medium shall be taken to include any intangible medium that is capable of storing, encoding or carrying instructions for execution by the machine 600, and includes digital or analog communications signals or other intangible medium to facilitate
  • Examples, as described herein, may include, or may operate on, logic or a number of components, modules, or mechanisms.
  • Modules are tangible entities (e.g., hardware) capable of performing specified operations and may be configured or arranged in a certain manner.
  • circuits may be arranged (e.g., internally or with respect to external entities such as other circuits) in a specified manner as a module.
  • the whole or part of one or more computer systems (e.g., a standalone, client or server computer system) or one or more hardware processors may be configured by firmware or software (e.g., instructions, an application portion, or an application) as a module that operates to perform specified operations.
  • the software may reside on a machine readable medium.
  • the software when executed by the underlying hardware of the module, causes the hardware to perform the specified operations.
  • module is understood to encompass a tangible entity, be that an entity that is physically constructed, specifically configured (e.g., hardwired), or temporarily (e.g., transitorily) configured (e.g., programmed) to operate in a specified manner or to perform part or all of any operation described herein.
  • each of the modules need not be instantiated at any one moment in time.
  • the modules comprise a general-purpose hardware processor configured using software
  • the general-purpose hardware processor may be configured as respective different modules at different times.
  • Software may accordingly configure a hardware processor, for example, to constitute a particular module at one instance of time and to constitute a different module at a different instance of time.
  • Some embodiments may be implemented fully or partially in software and/or firmware.
  • This software and/or firmware may take the form of instructions contained in or on a non-transitory computer-readable storage medium. Those instructions may then be read and executed by one or more processors to enable performance of the operations described herein.
  • the instructions may be in any suitable form, such as but not limited to source code, compiled code, interpreted code, executable code, static code, dynamic code, and the like.
  • Such a computer- readable medium may include any tangible non-transitory medium for storing information in a form readable by one or more computers, such as but not limited to read only memory (ROM); random access memory (RAM); magnetic disk storage media; optical storage media; flash memory, etc.
  • FIG. 7 illustrates a block diagram of an example wireless device 700 upon which any one or more of the techniques (e.g., methodologies or operations) discussed herein may perform.
  • the wireless device 700 may be a HE device.
  • the wireless device 800 may be one or more of HE ST As 504 (FIG. 5), HE AP 502, IoT device 508, sensor hub 510, example machine 600, or access gateway 512.
  • HE STAs 504 (FIG. 5), HE AP 502, IoT device 508, sensor hub 510, machine 600, or access gateway 512 may include some or all of the components shown in FIGS. 1-7.
  • the wireless device 700 may be an example machine 600 as disclosed in conjunction with FIG. 6.
  • the wireless device 700 may include processing circuitry 708.
  • the processing circuitry 708 may include a transceiver 702, physical layer circuitry (PHY circuitry) 704, and MAC layer circuitry (MAC circuitry) 706, one or more of which may enable transmission and reception of signals to and from other wireless devices 700 (e.g., HE ST As 504 (FIG. 5), HE AP 502, legacy device 506, IoT device 508, sensor hub 510, machine 600, or access gateway 512) using one or more antennas 712.
  • the PHY circuitry 704 may perform various encoding and decoding functions that may include formation of baseband signals for transmission and decoding of received signals.
  • the transceiver 702 may perform various transmission and reception functions such as conversion of signals between a baseband range and a Radio Frequency (RF) range.
  • RF Radio Frequency
  • the PHY circuitry 704 and the transceiver 702 may be separate components or may be part of a combined component, e.g., processing circuitry 708.
  • the transmission and reception of signals may be performed by a combination that may include one, any or all of the PHY circuitry 704 the transceiver 702, MAC circuitry 706, memory 710, and other components or layers.
  • the MAC circuitry 706 may control access to the wireless medium.
  • the wireless device 700 may also include memory 710 arranged to perform the operations described herein, e.g., some of the operations described herein may be performed by instructions stored in the memory 710.
  • the antennas 712 may comprise one or more directional or omnidirectional antennas, including, for example, dipole antennas, monopole antennas, patch antennas, loop antennas, microstrip antennas or other types of antennas suitable for transmission of RF signals.
  • the antennas 712 may be effectively separated to take advantage of spatial diversity and the different channel characteristics that may result.
  • One or more of the memory 710, the transceiver 702, the PHY circuitry 704, the MAC circuitry 706, the antennas 712, and/or the processing circuitry 708 may be coupled with one another.
  • memory 710, the transceiver 702, the PHY circuitry 704, the MAC circuitry 706, the antennas 712 are illustrated as separate components, one or more of memory 710, the transceiver 702, the PHY circuitry 704, the MAC circuitry 706, the antennas 712 may be integrated in an electronic package or chip.
  • the wireless device 700 may be a mobile device as described in conjunction with FIG. 6.
  • the wireless device 700 may be configured to operate in accordance with one or more wireless communication standards as described herein (e.g., as described in conjunction with FIGS. 1-6, IEEE 802.11 and/or Bluetooth).
  • the wireless device 700 may include one or more of the components as described in conjunction with FIG. 6 (e.g., display device 610, input device 612, etc.)
  • the wireless device 700 is illustrated as having several separate functional elements, one or more of the functional elements may be combined and may be implemented by combinations of software-configured elements, such as processing elements including digital signal processors (DSPs), and/or other hardware elements.
  • DSPs digital signal processors
  • some elements may comprise one or more microprocessors, DSPs, field- programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), radio-frequency integrated circuits (RFICs) and combinations of various hardware and logic circuitry for performing at least the functions described herein.
  • the functional elements may refer to one or more processes operating on one or more processing elements.
  • an apparatus of or used by the wireless device is provided.
  • the wireless device 700 may include various components of the wireless device 700 as shown in FIG. 7 and/or components from FIGS. 1-6. Accordingly, techniques and operations described herein that refer to the wireless device 700 may be applicable to an apparatus for a wireless device 700 (e.g., HE STAs 504 (FIG. 5), HE AP 502, legacy device 506, IoT device 508, sensor hub 510, machine 600, or access gateway 512), in some embodiments.
  • the wireless device 700 is configured to decode and/or encode signals, packets, and/or frames as described herein, e.g., PPDUs.
  • the MAC circuitry 706 may be arranged to contend for a wireless medium during a contention period to receive control of the medium for a HE TXOP and encode or decode an HE PPDU. In some embodiments,
  • the MAC circuitry 706 may be arranged to contend for the wireless medium based on channel contention settings, a transmitting power level, and a clear channel assessment level (e.g., an energy detect level).
  • a clear channel assessment level e.g., an energy detect level
  • the PHY circuitry 704 may be arranged to transmit signals in accordance with one or more communication standards described herein.
  • the PHY circuitry 704 may be configured to transmit a HE PPDU.
  • the PHY circuitry 704 may include circuitry for modulation/demodulation,
  • the processing circuitry 708 may include one or more processors.
  • the processing circuitry 708 may be configured to perform functions based on instructions being stored in a RAM or ROM, or based on special purpose circuitry.
  • the processing circuitry 708 may include a processor such as a general purpose processor or special purpose processor.
  • the processing circuitry 708 may implement one or more functions associated with antennas 712, the transceiver 702, the PHY circuitry 704, the MAC circuitry 706, and/or the memory 710.
  • the processing circuitry 708 may be configured to perform one or more of the functions/operations and/or methods described herein.
  • Low Power Wake Up Radio is a technique to enable ultra-low power operation for a Wi-Fi device.
  • FIG. 8 illustrates an example of a portion of a network 800 including a Wi-Fi transmitter 802 (e.g., an IEEE 802.11 device) and a Wi-Fi receiver 804.
  • the transmitter may be an AP and the receiver may be a ST A.
  • the receiver includes a low power wake-up radio mode (WUR mode).
  • the WUR mode provides the receiver with a minimum radio configuration that can receive wake-up packets from the transmitter, and allows the receiver to stay in ultra-low power operation until receiving the wake up packet. After receiving the wake-up packet, the receiver radio can be ready to accept the data from the transmitter 802.
  • the existing power save protocols can be roughly classified into two categories: A) scheduled power save protocols and B) unscheduled power save protocols.
  • Some examples of scheduled power save protocols include target wake time (TWT) and wireless network management (WNM) sleep mode.
  • TWT target wake time
  • WNM wireless network management
  • a STA periodically awakens from a "sleep" or "doze” mode to communicate data with the AP. After the awake time, the STA returns to the doze mode. The time of staying in the awakened state is negotiated between the AP and an associated STA. Another example of a negotiated parameter is the time until the next awake state of the STA. Synchronization information can be transmitted to the STA from the AP to synchronize device timing when the awake time occurs. During the awake time, the STA typically
  • the channel may also be a negotiated parameter.
  • unscheduled power save protocols include power- save mode (PSM), power save polling (PSP), and unscheduled automatic power save delivery (U-APSD).
  • PSM power- save mode
  • PSP power save polling
  • U-APSD unscheduled automatic power save delivery
  • FIGS. 9-11 illustrate the operation of PSM, PSP and U-APSD.
  • FIGS.9A and 9B illustrate an example 900 of the PSM signaling protocol, in accordance with some embodiments.
  • FIGS.9A-9B are each portions of one group of transmission sequences and the point designated "A" shows where the figures connect.
  • the AP may buffer data 902 intended for the associated STA when the STA is in power save mode.
  • the STA periodically wakes up to see if there is a beacon 904 transmitted by the AP. Note that this is different from the scheduled power save mode because only enough circuitry to check for the beacon needs to be activated. A transfer of data is not scheduled when the STA checks for the beacon.
  • the PSM signaling protocol starts with the STA indicating a change in power management (PM) mode from Power Save to Active mode by setting a PM bit to zero at 906.
  • the STA may perform clear channel assessment (CCA) when detecting the beacon and may indicate the change in PM mode to the AP by setting the PM bit to zero in a quality of service (QoS) frame.
  • CCA clear channel assessment
  • QoS quality of service
  • FIG. 9A shows an aggregated MPDU (A-MPDU) 908 sent to the STA with the STA responding with a block acknowledge (BA) message 910.
  • FIG. 9B illustrates the AP sending a single MPDU and the STA sending an ACK message. The STA may then transmit MPDUs 912 with the AP sending a BA message. When the there is no more data to transfer, the communications cease and the PSM timer times out.
  • A-MPDU aggregated MPDU
  • BA block acknowledge
  • the STA may perform CCA and may transmit a QoS message indicating the end of PSM by setting the PM bit to 1. to indicate the change in power mode back to the power save.
  • PSM ends with the STA returning to doze mode at 916 after receiving an ACK message from the AP.
  • FIGS. 10A-B illustrate an example 1000 of the PSP signaling protocol, in accordance with some embodiments.
  • FIGS. 10A-10B are each portions of one group of transmission sequences and the point designated "A" shows where the figures connect.
  • the STA is in power save mode.
  • the AP may buffer data 1002 intended for the associated STA when the STA is in power save mode, and the STA periodically wakes up to see if there is a beacon 1004 transmitted by the AP.
  • the PSP signaling protocol starts with the STA performing CCA to transmit a power save polling (PS-Poll) message 1006.
  • PS-Poll power save polling
  • the AP sends an ACK message to the STA.
  • the AP transmits one MPDU 1008 in response to the polling, and the PSP signaling ends when STA transmits an ACK to indicate the MPDU was received.
  • the STA can return to doze mode at 1010.
  • the PSP signaling protocol can have advantages over the PSM signaling protocol if only one MPDU needs to be communicated.
  • the PSP signaling may return to doze mode faster and thereby reduce overall power consumption if data transfers are small.
  • FIGS. 11 A-B illustrate an example 1100 of the U-APSD signaling protocol, in accordance with some embodiments.
  • FIGS. 11 A-B are each portions of one group of transmission sequences and the points designated as "A" and "B" show where the figures connect.
  • the AP may buffer data 1102 intended for the associated STA when the STA is in power save mode, and the ST A periodically wakes up to see if there is a beacon 1104 transmitted by the AP.
  • the U-APSD signaling protocol starts with the STA transmitting a message 1106 that includes a trigger frame (e.g., a QoS Null frame).
  • the message may include an MPDU that includes data or control information.
  • the transmission of the trigger frame message indicates the start of the service period.
  • the AP responds to the trigger frame by sending an ACK message.
  • the STA responds to the A-MPDU with a block acknowledge message.
  • the STA responds with a block acknowledge to the A-MPDU and returns to the doze mode at 1110.
  • the U-APSD may have advantages over the PSM or PSP protocols because data can be sent after the beacon without the STA needing to indicate the end of power mode or sending a polling message.
  • the WUR mode be compatible with the existing power save communication protocols.
  • the existing power save protocols described include the STA device periodically waking up from a doze state either according to a negotiated schedule or to check for a beacon from the AP device. Because the WUR mode is intended to be ultra-low power, the WUR mode may not include a periodic wake-up by the STA device. Therefore, some additional signaling may be required to optimize the interaction of the power save modes.
  • the negotiated schedule may be disabled when the STA is in WUR mode so that the STA device can be in a long sleep period and save power.
  • the STA device can be taken out of the WUR mode and the negotiated schedule time to transfer data with the AP device can be enabled.
  • the unscheduled power save protocols e.g., PSP, PSM, or U-APSD
  • An approach to making WUR mode compatible with the other power save modes is to set the STA device to a predetermined default for the WUR mode (e.g., either in WUR mode or out of WUR mode) when receiving a wake-up packet from another wireless device (e.g., an AP device or a second STA device).
  • a predetermined default for the WUR mode e.g., either in WUR mode or out of WUR mode
  • another wireless device e.g., an AP device or a second STA device.
  • operation of the STA device can be different depending on the default WUR mode, which can complicate the signaling by another device to communicate with the STA. For example, if the STA device uses a scheduled power save protocol, if the default for the STA device is out of WUR mode when receiving the wake-up packet from a separate device, communication can proceed normally during the negotiated period. If the default for the STA device is in the WUR mode when receiving the wake-up packet, then the negotiated period is disabled, and the STA device needs to disable the WUR mode and enable the negotiated period
  • the communication signals sent by the other device to communicate with the STA device may be different in the two default modes depending on whether the STA device needs time to change power save mode.
  • the STA device uses an unscheduled wake-up protocol, and if the default for the STA device is out of WUR mode when receiving the wake-up packet from a separate device, the STA device needs to enable WUR mode every time a wake-up packet is received.
  • the communication signals sent by the other device to communicate with the STA device may be different depending on whether the STA device is in WUR mode or out of WUR mode when receiving a wake-up packet.
  • An approach to integrating the WUR mode with the scheduled and unscheduled power save protocols is for the STA device to indicate to the other device whether the STA device will be in or out of WUR mode when the STA receives wake-up packet.
  • the indication can be
  • STA can update the indication by sending a frame with the latest indication of the default WUR mode state.
  • the devices then communicate using a signaling protocol determined by the indicated default WUR mode state and the power save communication protocol.
  • FIG. 1.2 is an illustration of an example 1200 of a scheduled power save communication protocol (the TWT protocol) with default WUR mode state of the STA device being in the WUR mode after receiving wake-up packet.
  • STA1 is the device transmitting the wake-up packet to wake up the main radio of STA2.
  • STA1 is an AP device and STA2 is a non-AP STA device.
  • the example assumes that STA1 and STA2 devices performed a WUR negotiation (not shown) and the devices are associated in a network.
  • the WUR negotiation was performed using the STA1 and STA2 devices and an AP device.
  • the WUR negotiation may include communicating parameters such as which communication channel will be used for the wake-up packet transmission and the default WUR mode state of the STA2 device.
  • the ST A2 may transmit the WUR mode element to the STA1 device during the negotiation.
  • the example 1200 begins with the completion of a scheduled awake time 1202 (e.g., TWT negotiated awake time) of the protocol during which data is communicated between the devices.
  • a scheduled awake time 1202 e.g., TWT negotiated awake time
  • STA2 is in the default WUR mode state (i.e., in WUR mode) and the doze state after awake time 1202.
  • Enabling WUR mode in STA2 may refer to STA2 being in WUR mode, and disabling WUR mode may refer to STA2 being out of WUR mode.
  • the WUR mode element may be set to one to indicate that the default WUR mode state is enabled, and set to zero to indicate that the default WUR mode state is disabled.
  • a WUR element of zero may indicate that the default WUR mode state is enabled, and a one may indicate that the default WUR mode state is disabled.
  • STA1 transmits a wake-up packet 1204 to STA2 and waits for a response from STA2.
  • STA2 decodes the wake-up packet and transmits a response 1206 to the wake-up packet that indicates that STA2 has ended or disabled the WUR mode.
  • the respon se may be a response packet including response frame indicating that the WUR mode is changed from enabled to disabled in STA2. Disabling WUR mode does not mean that WUR negotiation of the devices is terminated. All the negotiated parameters like the channel used for WUR signal transmission are still preserved when WUR mode is disabled, but STA2 does not enable its wake-up receiver capability when STA2 is in the doze state.
  • the response packet can also be sent during an awake time.
  • STA1 transmits an ACK message at 1208 to acknowledge the response 1206.
  • STA2 is out of WUR mode and is in the doze state waiting for the next awake time 1210 according to the scheduled protocol.
  • STA2 is out of WUR mode at the scheduled awake time 1210 and is in the awake state. Data can be
  • FIG. 13 is an illustration of an example 1300 of a scheduled power save communication protocol with the default WUR mode state of the STA2 device being out of the WUR mode after receiving wake-up packet.
  • FIG. 12 it is assumed that a WUR negotiation has already taken place and the default WUR mode state is already negotiated to be the WUR mode disabled.
  • the example 1300 begins with the completion of an awake time 1302 of the scheduled protocol during which data is communicated between the devices. From the perspective of STA1, STA2 is in WU mode and the doze state after awake time 1302. STA1 transmits a wake-up packet 1304 to STA 2. In this example, STA 1 does not wait for a response frame from STA2. From the perspective of STA1, STA2 is out of the WUR mode and is in the doze state. This is the default state of STA2 (WUR mode disabled) after receiving the received wake- up packet 1304. STA2 and STA1 wait for the next awake time 1310 according to the scheduled protocol. At the scheduled awake time 1310, from the perspective of STA1, STA2 is out of WUR mode and is in the awake state, and data can be communicated between the devices.
  • FIGS. 14A-1B illustrate an example 1400 of an unscheduled power save communication protocol (the U-APSD) between an AP device and a STA device.
  • FIGS. 14A-14B are each portions of one group of transmission sequences with the point designated as "A" showing where the figures connect.
  • the default WUR mode state of the STA device is in the WUR mode after receiving a wake-up packet.
  • the example 1400 begins with a WUR negotiation between the AP and the STA.
  • the negotiation example shows the AP device transmitting a WUR request message and the STA device transmitting a WUR response message.
  • the STA may indicate the default WUR mode state by sending the WUR mode element in a frame of the response message.
  • the WUR mode element is included in a management frame.
  • QoS quality of service
  • the AP sends an ACK message 1408 to the STA in response to the indication of the PM mode. At this point, the AP assumes the STA is in doze mode with the WUR mode enabled.
  • the AP may buffer data 1402 intended for the associated STA when the STA is in the doze and WUR modes.
  • the AP sends the STA a wake-up packet 1412.
  • the AP assumes that the STA is in the WUR mode.
  • the ST A upon decoding the wake-up packet, the ST A begins signaling according to the U-APSD signaling protocol.
  • the STA transmits a message that includes a trigger frame or response frame that may include an MPDU 1412.
  • the transmission of the trigger frame message indicates the start of the service period.
  • the AP responds to the trigger frame by sending an ACK message.
  • the STA responds to the A-MPDU 1414 with a block acknowledge message.
  • the STA responds with a block acknowledge to the A- MPDU and at 1416 returns to the doze mode with the WUR mode enabled.
  • FIGS. 15A-1 SB illustrate an example 1500 of an unscheduled power save communication protocol (the U-APSD) between an AP device and a STA device.
  • the default WUR mode state of the STA device is out of the WUR mode after receiving a wake-up packet.
  • FIGS. 15A-15B are each portions of one group of transmission sequences with the point designated as "A" showing where the figures connect.
  • the example 1500 begins with the WUR negotiation between the AP and the STA, and shows the AP device transmitting a WUR request message and the STA device transmitting a WUR response message.
  • the STA may indicate the default WUR mode state (i.e., disabled in response to a Wake-up packet) by communicating the WUR mode element in a management frame included in the WUR response message.
  • the STA may indicate that the STA is in power save mode by setting the PM bit accordingly in a quality of service (QoS) frame 1506.
  • QoS quality of service
  • the AP sends an acknowledge (ACK) message to the STA in response to the indication of the PM mode.
  • ACK acknowledge
  • the STA is in doze mode with the WUR mode enabled as in the example of FIGS. 14A, 14B.
  • the AP may buffer data 1510 intended for the associated STA when the STA is in the doze and WUR modes.
  • the AP sends the STA a wake-up packet 1512 to activate the STA to transfer the data.
  • the AP assumes that the STA is out of the WUR mode.
  • the STA begins signaling according to the U-APSD signaling protocol in response to the wake-up packet.
  • the STA transmits a message that includes a trigger frame and may include an MPDU 1514.
  • the transmission of the trigger frame message indicates the start of the service period.
  • the AP is aware that the STA is in an awake state, and the AP begins transferring the buffered data to the STA as an A-MPDU 1516 and clears the ESOP bit.
  • the STA responds to the A- MPDU 1516 with a block acknowledge message.
  • the AP transfers the last of the data as an A-MPDU and sets the ESOP bit to indicate the end of the service period and the end of the U-APSD signaling.
  • the STA responds with a block acknowledge to the A-MPDU.
  • the STA may be out of the WUR mode.
  • the STA transmits a signal 1520 to the AP to indicate that the STA is enabling the WUR mode.
  • the signal may be a QoS frame message.
  • the AP sends an ACK message 1522 in response to the signal.
  • the systems, devices, and methods described herein provide a signaling protocol to indicate the default state of the low power WUR mode of the wireless station device to an associated separate device of the wireless network. This allows the separate device to communicate with the wireless station device in a manner compatible the low power WUR mode and existing scheduled or unscheduled power save protocols.
  • Example 1 includes subject matter (such as an apparatus of a wireless device) comprising: memory; and processing circuitry coupled to the memory, the processing circuity configured to: decode a management frame received from an associated wireless station (STA), the management frame including a wake-up radio (WUR) mode element indicating a default WUR mode state of the associated STA, wherein the default WUR mode state determines a response of the STA to a wake-up packet; encode a message to include the wake-up packet and transmit the wake-up packet to the associated STA when the STA is in a power mode in which the STA communicates using a power save communication protocol; and communicate data with the associated STA using a signaling protocol determined by the indicated default WUR mode state and the power save communication protocol.
  • STA wireless station
  • WUR wake-up radio
  • Example 2 the subject matter of Example 1 optionally includes the wireless device configured to communicate data with the associated STA according to a scheduled power save protocol using a scheduled awake time; and, if the WUR mode element indicates that the default state of the WUR mode is enabled when receiving a wake-up packet, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes: receiving a response frame from the associated STA in response to the wake-up packet, the response frame indicating that the associated STA has ended the WUR mode; and communicating data according to the scheduled awake time upon decoding the response frame.
  • a signaling protocol that includes: receiving a response frame from the associated STA in response to the wake-up packet, the response frame indicating that the associated STA has ended the WUR mode; and communicating data according to the scheduled awake time upon decoding the response frame.
  • Example 3 the subject matter of Example 2 optionally includes, if the WUR mode element indicates that the default state of the WUR mode is disabled when receiving the wake-up packet, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes communicating data according to the scheduled awake time without waiting for the response frame.
  • Example 4 the subject matter of one or any combination of Examples 1-3 optionally includes the wireless device configured to communicate data with the associated STA according to an unscheduled power save protocol; and, if the WUR mode element indicates that the default WUR mode state is enabled when receiving the wake-up packet, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes communicating data with the associated STA according to the unscheduled power save protocol upon decoding a response to the wake-up packet.
  • Example 5 the subject matter of Example 4 optionally includes, if the WUR mode element indicates that WUR mode is disabled when receiving the wake-up packet, the processing circuitry is configured to communicate data with the associated ST A using a signaling protocol that includes: communicating the data with the associated STA according to the unscheduled power save protocol upon decoding the response to the wake-up packet; and transmitting an acknowledge when receiving a frame indicating that the WUR mode is enabled in the associated STA.
  • Example 6 the subject matter of one or any combination of Examples 1-5 optionally includes the wireless device and the associated STA each being one from the following group: an Institute of Electrical and Electronic Engineers (IEEE) 802.1 l ax access point, an IEEE 802.1 lax station, an IEEE 802.11 station, and an IEEE 802.11 access point.
  • IEEE Institute of Electrical and Electronic Engineers
  • Example 7 the subject matter of one or any combination of Examples 1-6 optionally includes transceiver circuitry operatively coupled to the processing circuitry.
  • Example 8 includes subject matter (such as an apparatus of a wireless device), or can optionally be combined with the subject matter of one or any combination of Examples 1-7 to include such subject matter, comprising: memory; and processing circuitry coupled to the memory, the processing circuity configured to: encode a management frame including a wake-up radio (WUR) mode element that indicates a default WUR mode state of the STA, wherein the default WUR mode state determines a response of the STA to a wake-up packet; configure the STA to transmit the management frame to one or more wireless devices; enter a power mode in which the STA communicates with the one or more devices using a power save communication protocol; and communicate data, in response to decoding the wake- up packet, with the one or more wireless devices using a signaling protocol determined by the indicated default WUR mode state and the power save communication protocol.
  • WUR wake-up radio
  • Example 9 the subject matter of Example 8 optionally includes the STA configured to communicate data with an associated access point (AP) according to a scheduled power save protocol, and wherein, if the default WUR mode state of the STA is enabled when the wake-up packet is decoded, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes: transmitting a response frame to the associated AP upon decoding the wake-up packet, wherein the response frame indicates the STA is out of the WUR mode; and waiting for the next scheduled awake time to communicate data with the associated AP.
  • a signaling protocol that includes: transmitting a response frame to the associated AP upon decoding the wake-up packet, wherein the response frame indicates the STA is out of the WUR mode; and waiting for the next scheduled awake time to communicate data with the associated AP.
  • Example 10 the subject matter of Example 9 optionally includes, if the default WUR mode state of the STA is disabled when the wake-up packet is decoded, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes waiting for the next scheduled awake time to communicate data with the associated AP without transmitting the response frame.
  • Example 11 the subject matter of one or any combination of Examples 8-10 optionally includes the STA configured to communicate data with the associated AP according to an unscheduled power save protocol, and wherein, if the WUR mode of the wireless device is enabled when the wake-up packet is decoded, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes: transmitting a response frame to the associated AP upon decoding the wake-up packet; communicating data with the associated AP according to the unscheduled power save protocol; and remaining in the WUR mode upon completion of communicating the data.
  • a signaling protocol that includes: transmitting a response frame to the associated AP upon decoding the wake-up packet; communicating data with the associated AP according to the unscheduled power save protocol; and remaining in the WUR mode upon completion of communicating the data.
  • Example 12 the subject matter of Example 11 optionally includes, if the WUR mode of the STA is disabled when the wake-up packet is decoded, the processing circuitry is configured to communicate data with the associated STA using a signaling protocol that includes: remaining out of the WUR mode upon completion of communicating the data; and when subsequently enabling the WUR mode, transmitting a frame to the associated AP indicating the STA is in the WUR mode.
  • Example 13 the subject matter of one or any combination of Examples 8-12 optionally includes the being an IEEE 802.1 lax station or an IEEE 802.11 station, and the frame including the wake-up radio (WUR) mode element is a management frame.
  • WUR wake-up radio
  • Example 14 the subject matter of one or combination of claims 8- 13, optionally includes transceiver circuitry operatively coupled to the processing circuitry.
  • Example 15 includes subject matter (such as a non-transitory computer-readable storage medium that stores instructions for execution by one or more processors), or can optionally be combined with the subject matter of one or any combination of Examples 1 -1.4 to include such subject matter, comprising: instructions to configure one or more processors to cause a wireless device to:
  • a management frame received from an associated wireless station (ST A) the management frame including a wake-up radio (WUR) mode element indicating a default WUR mode state of the associated ST A, wherein the default WUR mode state determines a response of the STA to a wake-up packet; encode a message to include the wake-up packet and transmit the wake-up packet to the associated STA when the STA is in a power mode in which the STA communicates using a power save communication protocol; and communicate data with the associated STA using a signaling protocol determined by the indicated default WUR mode state and the power save communication protocol.
  • WUR wake-up radio
  • Example 16 the subject matter of Example 15 optionally includes instructions that configure the one or more processors to cause the wireless device to: communicate data with the associated STA according to a scheduled power save protocol using a scheduled awake time; if the WUR mode element indicates that WUR mode is enabled when receiving a wake-up packet, communicate data with the associated STA using a signaling protocol that includes waiting for a response frame from the associated STA indicating that the associated STA has ended the WUR mode, and communicating data according to the scheduled awake time upon decoding the response frame; and if the WUR mode element indicates that WUR mode is disabled when receiving the wake-up packet, communicate data with the associated STA using a signaling protocol that includes communicating data according to the scheduled awake time without waiting for the response frame.
  • Example 17 the subject matter of one or both of Examples 15 and 16 optionally includes instructions that configure the one or more processors to cause the wireless device to: communicate data with the associated STA according to an unscheduled power save protocol; if the WUR mode element indicates that WUR mode is enabled when receiving the wake-up packet, communicate data with the associated STA using a signaling protocol that includes communicating data with the associated STA according to the unscheduled power save protocol upon decoding a response to the wake-up packet; and if the WUR mode element indicates that WUR mode is disabled when receiving the wake-up packet, communicate data with the associated STA using a signaling protocol that includes communicating the data with the associated STA according to the unscheduled power save protocol upon decoding the response to the wake-up packet, and transmitting an acknowledge when receiving a frame indicating that the WUR mode is enabled in the associated STA.
  • Example 18 includes subject matter (such as a non-transitory computer-readable storage medium that stores instructions for execution by one or more processors), or can optionally be combined with the subject matter of one or any combination of Examples 1 -17 to include such subject matter, comprising:
  • a wireless station STA
  • a wireless station STA
  • WUR wake-up radio
  • the default WUR mode state determines a response of the STA to a wake-up packet
  • configure the STA to transmit the management frame to one or more wireless devices enter a power mode in which the STA communicates with the one or more devices using a power save communication protocol; and communicate data with the one or more wireless devices, in response to decoding the wake-up packet, using a signaling protocol determined by the indicated default WUR mode state and the power save
  • Example 19 the subject matter of Example 18 optionally includes instructions that configure the one or more processors to cause the wireless device to: communicate data with an associated access point (AP) according to a scheduled power save protocol; decode a wake-up packet received from the associated AP; if the WUR mode element indicates that WUR mode of the STA is enabled when the wake-up packet is decoded, communicate data with the associated AP using a signaling protocol that includes transmitting a response frame to the associated AP upon decoding the wake-up packet, the response frame indicating the STA is out of the WUR mode; and waiting for the next scheduled awake time to communicate data with the associated AP; and if the WUR mode element indicates that WUR mode of the STA is disabled when the wake-up packet is decoded, communicate data with the associated AP using a signaling protocol that includes waiting for the next scheduled awake time to communicate data with the associated AP without transmitting the response frame.
  • AP access point
  • Example 20 the subject matter of one or both of Examples 18 and 19 optionally includes instructions that configure the one or more processors to cause the wireless device to: communicate data with an associated access point (AP) according to an unscheduled power save protocol; decode a wake-up packet received from the associated AP; if the WUR mode element indicates the WUR mode of the STA is enabled when the wake-up packet is decoded, communicate data with the associated AP using a signaling protocol that includes remaining in the WUR mode upon completion of communicating the data; and if the WUR mode element indicates the WUR mode if the STA is disabled when the wake-up packet is decoded, communicate data with the associated AP using a signaling protocol that includes remaining out of the WUR mode after the data is communicated, and when subsequently enabling the WUR mode, transmitting a frame to the associated AP indicating the STA is in the WUR mode.
  • AP access point

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

La présente invention concerne un appareil d'une station sans fil (STA) qui comprend : une mémoire et un ensemble de circuits de traitement couplé à la mémoire. L'ensemble de circuits de traitement est configuré afin : de coder une trame de gestion comprenant un élément de mode radio d'activation (WUR) qui indique un état de mode WUR par défaut de la STA, l'état de mode WUR par défaut déterminant une réponse de la STA à un paquet d'activation; de configurer la STA afin de transmettre la trame de gestion à un ou plusieurs dispositifs sans fil; d'entrer dans un mode de puissance dans lequel la STA communique avec lesdits dispositifs à l'aide d'un protocole de communication à économie d'énergie; et de communiquer des données, en réponse au décodage du paquet d'activation, avec lesdits dispositifs sans fil à l'aide d'un protocole de signalisation déterminé par l'état de mode WUR par défaut indiqué et du protocole de communication à économie d'énergie.
PCT/US2017/054019 2017-04-12 2017-09-28 Transition de mode radio d'activation (wur) Ceased WO2018190898A1 (fr)

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