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WO2018140187A1 - Définition d'ensemble de tonalités dans le rapport de rétroaction court - Google Patents

Définition d'ensemble de tonalités dans le rapport de rétroaction court Download PDF

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Publication number
WO2018140187A1
WO2018140187A1 PCT/US2017/068238 US2017068238W WO2018140187A1 WO 2018140187 A1 WO2018140187 A1 WO 2018140187A1 US 2017068238 W US2017068238 W US 2017068238W WO 2018140187 A1 WO2018140187 A1 WO 2018140187A1
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WO
WIPO (PCT)
Prior art keywords
tone
tones
mhz
tone set
station
Prior art date
Application number
PCT/US2017/068238
Other languages
English (en)
Inventor
Xiaogang Chen
Laurent Cariou
Feng Jiang
Qinghua Li
Original Assignee
Intel IP Corporation
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Intel IP Corporation filed Critical Intel IP Corporation
Publication of WO2018140187A1 publication Critical patent/WO2018140187A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2603—Signal structure ensuring backward compatibility with legacy system

Definitions

  • Embodiments pertain to wireless networks and wireless communications. Some embodiments relate to wireless local area networks (WLANs) and Wi-Fi networks including networks operating in accordance with the IEEE 802.11 family of standards. Some embodiments relate to IEEE 802.1 lax. Some embodiments relate to methods, computer readable media, and apparatus for tone set definition in the short feedback report.
  • WLANs wireless local area networks
  • Wi-Fi networks including networks operating in accordance with the IEEE 802.11 family of standards.
  • IEEE 802.1 lax Some embodiments relate to methods, computer readable media, and apparatus for tone set definition in the short feedback report.
  • 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 WLAN in accordance with some
  • FIG. 6 illustrates a block diagram of an example machine upon which any one or more of the techniques (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 a method for tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 9 illustrates a high-efficiency (HE) trigger based (TB) null data packet (NDP) feedback a physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU) in accordance with some embodiments;
  • HE high-efficiency
  • NDP null data packet
  • PLCP physical Layer Convergence Procedure
  • FIG. 10 illustrates a HE station in accordance with some embodiments
  • FIG. 11 illustrates a HE access point (AP) in accordance with some embodiments
  • FIG. 12 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 13 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 14 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 15 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 16 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 17 illustrates a tone set definition in the short feedback report in accordance with some embodiments
  • FIG. 18 illustrates a method for tone set definition in the short feedback report in accordance with some embodiments.
  • FIG. 19 illustrates a method for tone set definition in the short feedback report 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 IC 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 106A 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 104A 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 101.
  • 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 104A and provide baseband signals to WLAN baseband processing circuitry 108A.
  • 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 106A 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 106A 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 108A and a BT baseband processing circuitry 108B.
  • the WLAN baseband processing circuitry 108A 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 108A.
  • Each of the WLAN baseband circuitry 108A 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 108A 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 108A 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 104A 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 101, the FEM circuitry 104 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 (STA) such as a wireless access point (AP), a base station or a mobile device including a Wi-Fi device.
  • STA Wi-Fi communication station
  • AP wireless access point
  • 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 802.11n-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 WLANs, although the scope of embodiments is not limited in this respect.
  • 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 (FDM) 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
  • FDM 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 5.0, 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) communications, although the scope of the embodiments is not limited in this respect.
  • ACL Asynchronous Connection-Less
  • the functions of a 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).
  • 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).
  • 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
  • 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
  • filters 212 such as band-pass filters (BPFs), low-pass filters (LPFs) or other types of 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 31 1 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 31 1 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 superheterodyne 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 (fro) 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 this respect.
  • the LO signals may differ in duty cycle
  • each branch of the mixer circuitry e.g., the in-phase (I) and quadrature phase (Q) path
  • 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
  • the output baseband signals 307 and the input baseband signals 311 may be digital baseband signals.
  • 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
  • a separate radio IC circuitry may be provided for processing signals for each spectrum, or for other spectrums not mentioned here, although the scope of the embodiments is not limited in this respect.
  • the synthesizer circuitry 304 may be a fractional -N synthesizer or a fractional N/N+1 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.
  • 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 embodiments, 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.
  • 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 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 are identical to each other. [0057] Referring back to FIG. 1, in some embodiments, the antennas 101 are identical to each other.
  • FIG. 1 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 a WLAN 500 in accordance with some embodiments.
  • the WLAN 500 may comprise a basis service set (BSS) that may include a HE access point (AP) 502, which may be an AP, a plurality of high- efficiency wireless (e.g., IEEE 802.1 lax) (HE) stations 504, and a plurality of legacy (e.g., IEEE 802.11n/ac) devices 506.
  • BSS basis service set
  • AP HE access point
  • HE high- efficiency wireless
  • legacy e.g., IEEE 802.11n/ac
  • 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-MIMO).
  • SDMA space-division multiple access
  • MU-MIMO multiple-user multiple-input multiple -output
  • There may be more than one HE AP 502 that is part of an extended service set (ESS).
  • a controller (not illustrated) may store information that is common to the more than one
  • 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/ay, or another legacy wireless communication standard.
  • the legacy devices 506 may be STAs or IEEE STAs.
  • the HE STAs 504 may be wireless transmit and receive devices such as cellular telephone, portable electronic wireless communication devices, smart telephone, handheld wireless device, wireless glasses, wireless watch, wireless personal device, tablet, 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 STAs 504 may be termed high efficiency (HE) stations.
  • HE high efficiency
  • 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 STAs 504 in accordance with legacy IEEE 802.11 communication techniques.
  • a HE frame may be configurable to have the same bandwidth as a channel.
  • the HE frame may be a physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU).
  • PLCP physical Layer Convergence Procedure
  • PPDU Protocol Data Unit
  • MAC media access control
  • 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.
  • the channels are multiple of 26 tones or a multiple of 20 MHz.
  • 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.
  • the RU are used in the 20 MHz, 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDMA 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, 160 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 (IS-2000), Interim Standard 95 (IS-95), Interim Standard 856 (IS-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-2000 IS-2000
  • IS-95 IS-95
  • IS-856 Interim Standard 856
  • LTE Long Term Evolution
  • GSM Global System for Mobile communications
  • EDGE Enhanced Data rates for GSM Evolution
  • a HE AP 502 may operate as a master station 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).
  • TXOP transmission opportunity
  • the HE AP 502 may transmit a HE master-sync transmission, which may be a trigger frame or HE control and schedule transmission, at the beginning of the HE control period.
  • the HE AP 502 may transmit a time duration of the TXOP and sub-channel information.
  • HE STAs 504 may communicate with the HE AP 502 in accordance with a non-contention based multiple access technique such as OFDMA or MU-MIMO. This is unlike conventional WLAN communications in which devices communicate in accordance with a contention- based communication technique, rather than a multiple access technique.
  • the HE AP 502 may communicate with HE stations 504 using one or more HE frames.
  • the HE STAs 504 may operate on a sub-channel smaller than the operating range of the HE AP 502.
  • legacy stations refrain from communicating. The legacy stations may need to receive the communication from the HE AP 502 to defer from communicating.
  • the trigger frame may indicate an uplink (UL) UL-MU-MIMO and/or UL OFDMA TXOP.
  • the trigger frame may include a DL UL-MU-MIMO and/or DL OFDMA with a schedule indicated in a preamble portion of trigger frame.
  • the multiple-access technique used during the HE TXOP 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 multiple access technique may be a Code division multiple access (CDMA).
  • the HE AP 502 may also communicate with legacy stations 506 and/or HE stations 504 in accordance with legacy IEEE 802.11 communication techniques.
  • the HE AP 502 may also be configurable to communicate with HE stations 504 outside the HE TXOP in accordance with legacy IEEE 802.11 communication techniques, although this is not a requirement.
  • the HE station 504 may be a "group owner" (GO) for peer-to-peer modes of operation.
  • a wireless device may be a HE station 502 or a HE AP 502.
  • 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. 1 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 HE stations 504, HE AP 502, an apparatus of the HE stations 504, and/or an apparatus of the HE AP 502 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 baseband processing circuitry of FIG. 4.
  • 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 operations/functions herein described in conjunction with FIGS. 1- 19.
  • the HE station 504 and/or the HE AP 502 are configured to perform the methods and operations/functions described herein in conjunction with FIGS. 1-19.
  • an apparatus of the HE station 504 and/or an apparatus of the HE AP 502 are configured to perform the methods and functions described herein in conjunction with FIGS. 1-19.
  • the term Wi-Fi may refer to one or more of the IEEE 802.11
  • AP and STA may refer to HE access point 502 and/or HE station 504 as well as legacy devices 506.
  • a HE AP STA may refer to a HE AP 502 and a HE STAs 504 that is operating a HE APs 502.
  • when an HE STA 504 is not operating as a HE AP it may be referred to as a HE non-AP STA or HE non-AP.
  • HE STA 504 may be referred to as either a HE AP STA or a HE non-AP.
  • FIG. 6 illustrates a block diagram of an example machine 600 upon which any one or more of the 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 AP 502, HE station 504, 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.
  • PC personal computer
  • PDA personal digital assistant
  • portable communications device a mobile telephone
  • smart phone a web appliance
  • 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.
  • 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
  • RAM Random Access Memory
  • semiconductor memory devices which may include, in some embodiments, storage locations in semiconductors such as registers.
  • static memory 606 include 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(IR), 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(IR), 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
  • 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.
  • the hardware processor 602, the main memory 604, the static memory 606, or the storage device 616 may constitute machine readable media.
  • machine readable media may include: nonvolatile memory, such as semiconductor memory devices (e.g., EPROM or 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.
  • nonvolatile memory such as semiconductor memory devices (e.g., EPROM or EEPROM) and flash memory devices
  • magnetic disks such as internal hard disks and removable disks
  • magneto-optical disks such as 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.
  • 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.
  • machine readable media may include: 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; Random Access Memory (RAM); and CD-ROM and DVD-ROM disks.
  • 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 such as internal hard disks and removable disks
  • RAM Random Access Memory
  • CD-ROM and DVD-ROM disks CD-ROM and DVD-ROM disks.
  • machine readable media may include non-transitory machine readable media.
  • machine readable media may include machine readable media that is not a transitory
  • 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) 802.1 1 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) 802.1 1 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 communicate using at least one of single-input multiple-output (SIMO), multiple-input multiple-output (MIMO), or multiple-input single-output (MISO) techniques.
  • SIMO single-input multiple-output
  • MIMO multiple-input multiple-output
  • MISO multiple-input single-output
  • 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 communication of such software.
  • 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
  • the wireless device 700 may be a HE device.
  • the wireless device 700 may be a HE STA 504 and/or HE AP 502 (e.g., FIG. 5).
  • a HE STA 504 and/or HE AP 502 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 AP 502, HE STA 504, and/or legacy devices 506) 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.
  • some of the described functionality related to 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).
  • 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 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 AP 502 and/or HE STA 504), 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, upconversion/downconversion, filtering, amplification, etc.
  • 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. In some embodiments, the processing circuitry 708 may be configured to perform one or more of the functions/operations and/or methods described herein.
  • communication between a station (e.g., the HE stations 504 of FIG. 5 or wireless device 700) and an access point (e.g., the HE AP 502 of FIG. 5 or wireless device 700) may use associated effective wireless channels that are highly directionally dependent.
  • beamforming techniques may be utilized to radiate energy in a certain direction with certain beamwidth to communicate between two devices.
  • the directed propagation concentrates transmitted energy toward a target device in order to compensate for significant energy loss in the channel between the two communicating devices.
  • Using directed transmission may extend the range of the millimeter-wave communication versus utilizing the same transmitted energy in omni-directional propagation.
  • FIGS. 8-11 as described in conjunction with one another.
  • FIG. 8 illustrates a method 800 for tone set definition in the short feedback report, in accordance with some embodiments. Illustrated in FIG. 8 is time 802 along a horizontal axis, frequency 806 along a vertical axis, transmitter 804 along the horizontal axis, and operations 850 along the top.
  • the frequency 806 indicates a bandwidth of a channel, e.g. as illustrated the frequency may be 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, or 160 MHz.
  • the transmitter 804 indicates the wireless device that is transmitting at each of the operations 850.
  • the transmitters are HE AP 502 and HE stations 504.1 through 504.N.
  • the method 800 begins at operation 852 with the HE AP 502 acquiring the wireless medium.
  • the HE AP 502 may perform a contention based method to determine acquire the wireless medium.
  • the method 800 continues at operation 854 with the HE AP 502 transmitting a trigger frame for null data packet (NDP) feedback report poll (TF for NDP feedback) 808, in accordance with some embodiments.
  • the TF for NDP feedback 808 may include one or more of a feedback type field 830, starting association identification (AID) field 832, bandwidth (BW) field 834, and spatial streams field 836.
  • the feedback type field 830, starting AID field 832, BW field 834, and spatial streams field 836 may be as described in conjunction with FIGS. 10 and 11.
  • FIG. 9 illustrates a high-efficiency (HE) trigger based (TB) NDP feedback a physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU) 900, in accordance with some embodiments.
  • the HE TB NDP PPDU 900 may include a legacy short-training field (L-STF) 902, a legacy long- training field (L-LTF) 904, a legacy signal (L-SIG) field 906, a repeated L-SIG field 908, a HE signal A (SIG-A)(HE-SIG-A) field 910, a HE short-training field (STF)(HE-STF) 912, and a HE long-training field (LTF)(HE-LTF) 914.
  • L-STF legacy short-training field
  • L-LTF legacy signal
  • the L-STF 902 may be a legacy field of duration 8 that may be for the receiver to tune the receiver.
  • the L-STF 902 may be the same or similar as a L-STF 902 as defined in IEEE 802.1 la.
  • the L-LTF 904 may be a legacy field of duration 8 that may be for the receiver to tune the receiver.
  • the L-LTF 904 may be the same or similar as a L-LTF 904 defined in IEEE 802.1 la.
  • the L-SIG field 906 may be a legacy field of duration 4 that may include information regarding the length of the PPDU and modulation.
  • the L- SIG field 906 may be the same or similar as a L-SIG 906 defined in IEEE 802.1 la.
  • the RL-SIG field 908 may be a field of duration 4 that may be the same or similar as the L-SIG 906.
  • the RL-SIG 908 may be used to determine the communication protocol and/or the type of packet of the HE TB NDP PPDU 900.
  • the HE-SIG-A 910 may include one or more of the following: information regarding the length of the HE TB NDP PPDU 900, information regarding the modulation and coding scheme (MCS) of the HE TB NDP PPDU 900, and/or other information regarding the HE TB NDP PPDU 900.
  • MCS modulation and coding scheme
  • the HE-LTF 914 may be 2 HE-LTF symbols with a duration of
  • the HE-LTF 914 may be used for the feedback (e.g., 504).
  • the HE TB NDP PPDU 900 does not include a data field and has a packet extension (PE) of zero, in accordance with some embodiments.
  • FIG. 10 illustrates a HE station 504 in accordance with some embodiments. Illustrated in FIG. 10 is a TF for NDP feedback 808, HE station 504, RU tone set 1714, and feedback 1716.
  • the TF for NDP feedback 808 may be the same or similar as TF for NDP feedback 808 of FIG. 8.
  • the feedback type field 830 may be a field that indicates a type of feedback that is being polled.
  • a feedback type may be a resource request, which may indicate whether the responding HE station 504 is requesting UL resources to transmit PPDUs to the HE AP 502.
  • the starting AID field 832 may indicate a starting AID of AIDs that are being polled by the TF for NDP feedback 808.
  • a total number of AIDs that are being polled by the TF for NDP feedback 808 may be determined based on the value of the BW field 834, spatial streams field 836, and a number of RU tone sets per 20 MHz.
  • the value of the BW field 834 may indicate a bandwidth for the response, e.g., 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, and 160 MHz.
  • the value of the spatial streams 836 may indicate a number of spatial streams to be used for the response to the TF for NDP feedback 808.
  • the HE station 504 may be the same or similar to the HE station 504 of FIG. 5.
  • the HE station 504 may include a resource allocation determiner 1010, an AID 1012, a feedback determiner 1014, a HE-LTF sequence 1016, a RU tone set index 1018, and a RU tone set table 1020.
  • the AID 1012 is an AID assigned to the HE station 504 by a HE AP 502 that transmitted the TF for NDP feedback 808.
  • the feedback determiner 1014 determines the feedback 1026 in response to the TF for NDP feedback 808. For example, if the feedback type field 830 indicates that the feedback requested is whether the HE station 504 requests UL transmission resources, then the feedback determiner 1014 may examine a queue to determine if there is UL traffic (not illustrated) waiting to be transmitted to the HE AP 502. If there is UL traffic waiting to be transmitted to the HE AP 502, then the feedback determiner 1014 may determine the feedback 1026 is a 1. If there is not UL traffic waiting to be transmitted to the HE AP 502, then the feedback determiner 1014 may determine the feedback 1026 to be a 0. In some embodiments, the feedback 1026 may be more than one bit.
  • the resource allocation determiner 1010 may determine the RU tone set 1024 that the feedback 1026 should be transmitted on.
  • the resource allocation determiner 1010 may first determine a RU tone set index 1018 based on the value of the starting AID 832, the value of the BW field 834, the value of the spatial streams field 836, and the value of the AID 1012.
  • the value of the RU tone set index 1018 may be 10 (or 9 or 11), in accordance with some embodiments. In some embodiments, the RU tone set index 1018 may be determined differently.
  • the resource allocation determiner 1010 may then determine the resource allocation
  • the RU tone set 1024 based on the RU tone set index 1018, RU tone set table 1020, the value of the BW field 834, and the value of the spatial streams 836.
  • the RU tone set 1024 comprises a number of subcarrier indices spread across one or more 20 MHz channels. For example, if the value of the RU tone set index 1018 is greater than the number of RU tone sets 1024 per 20 MHz channels, then the resource allocation determiner 1010 determines an offset to add to the 20 MHz channel subcarrier indices based on the value of the BW field 834, in accordance with some embodiments.
  • the offset to add to the 20 MHz channel subcarrier indices are to map the subcarrier indices to the second 20 MHz channel, in accordance with some embodiments.
  • the resource allocation determiner 1010 determines the offset to add to the 20 MHz channel subcarrier indices for values of BW field 834 that indicate 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, and 160 MHz.
  • the resource allocation determiner 1010 may determine a P-matrix value associated with the RU tone set 1024 based on the value of the spatial streams field 836.
  • the RU tone set 1024 may have different tones to indicate different feedback 1026. For example, transmitting on a first set of RU tone set 1024 may indicate a 1, and transmitting on a second set of RU tone set 1024 may indicate a 0.
  • the HE-LTF sequence 1016 may be used by the HE station 504 to transmit the response. For example, if the RU tone set 1024 is subcarrier indexes 21, 41, 61, 81, 101, and 121 of a 20 MHz channel, then the HE station 504 transmits on each of the subcarrier indexes the value of the HE-LTF sequence 1016 for the subcarrier index of the 20 MHz channel, in accordance with some embodiments.
  • FIG. 11 illustrates a HE access point (AP) 502 in accordance with some embodiments.
  • the HE AP 502 may include TF generator 1102, HE-LTF sequence 1104, prohibited tones 1106, associated HE stations AIDS 1108, feedback determiner 1110, RU tone set table 1112, and RU tone set index to AID determiner 1114.
  • the associated HE stations AIDS 1108 may be a data structure (e.g., a table or array) of the HE station 504 that are associated with the HE AP 502.
  • the TF generator 1102 may determine a range of AIDs from the associated HE stations AIDS 1108 that the HE AP 502 will address with the TF for NDP feedback 1002.
  • the TF generator 1102 sets the starting AID 832 to be the AID of the first HE station 504 of the range of AIDs.
  • the TF generator 1102 may determine the value of the BW field 834 and the value of the spatial streams field 836 to accommodate the range of AIDs. For example, if a 20 MHz BW can accommodate a number N (e.g., 10 to 50) of RU tone sets 1024, and T is the total number of AIDs, then the BW may be set to M / N. For example, if N is 18 and M is 40, then the BW may be set to indicate two 20 MHz channels or 40 MHz. Setting the value of the spatial streams field 836 to two may double the number of RU tone sets 1024.
  • the TF generator 1102 may determine whether to increase the number of spatial streams 836 or to increase the BW 834 to accommodate the number of RU tone sets 1024.
  • the TF generator 1102 may determine the value of the feedback type 830, e.g., resource request.
  • the prohibited tones 1106 may be tones or subcarriers that cannot be assigned to HE stations 504 when a 20 MHz operating HE station 504 is the receiver of a 40 MHz, 80 MHz, 80+80 MHz, 160 MHz HE MU PPDU, or the transmitter of a 40 MHz, 80 MHz, 80+80 MHz, 160 MHz HE TB PPDU, because the RU tone mapping in 20 MHz is not aligned with 40 MHz, 80 MHz, 80+80 MHz, 160 MHz tone mappings.
  • the HE AP 502 is configured not to assign some RU tone sets 1024 to a 20 MHz operating HE stations 504, in accordance with some embodiments. In some embodiments, when a 20 MHz operating HE station 504 is included with the scheduled HE stations 504, then some RU tone sets 1024 are skipped.
  • the RU tone set index to AID determiner 1114 may be configured to determine the feedback from HE stations 1116. For example, the HE AP 502 may receive the feedback (e.g., NDP feedback 808, 810, 812, 900) and determine the response from each HE station 504 based on which RU tone sets 1024 had energy transmitted on them, in accordance with some
  • the RU tone set index to AID determiner 1114 may determine based on the RU tone set table 1112, prohibited tones 1106, and HE-LTF sequence 1104 which RU tone sets 1024 had energy transmitted on them. And, determine which AID of the associated HE stations AIDS 1108 transmitted on the RU tone sets 1024 based on the starting AID 832, BW 834, spatial streams 836, and RU tone set table 1112.
  • the RU tone set 1024 may comprise a first set of subcamers or tones and a second set of subcamers or tones.
  • the HE station 504 transmits on the first set of subcamers or tones, then it indicates a first response to the feedback type 830 and if the HE station 504 transmits on the second set of subcamers or tones, then it indicates a second response to the feedback type 830.
  • the HE stations 504.1 through 504.N may receive the TF for NDP feedback 808 and as described in conjunction with FIG. 10 determine if their AID 1012 is indicated in the TF for NDP feedback 808 and, if their AID 1012 is indicated, determine their RU tone set 1024 and determine the feedback 1026.
  • the trigger frame for NDP feedback report poll 808 may be transmitted on a 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz, or on multiple 20 MHz channels.
  • the method 800 continues at operation 856 with the HE stations
  • the period of time may be a short interframe space (SIFS), in accordance with some embodiments.
  • SIFS short interframe space
  • the method 800 continues at operation 858 with the HE stations 504.1 through 504.N transmitting NDP feedback 808, 810, and 812.
  • the NDP feedback 808, 810, 812 may be a HE TB NDP PPDU 900 as described in conjunction with FIG. 9.
  • Each HE station 504.1 through 504.N transmits a NDP feedback.
  • the NDP feedback 808 may be transmitted on a 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz, or on multiple 20 MHz channels.
  • the NDP feedback 808 may be L-STF 902 through HE-STF 912.
  • the HE stations 504.1 through 504.N may then transmit on subcarrier or tones 810, which may be the HE-LTF 914, in accordance with some embodiments.
  • the HE stations 504.1 through 504.N may determine their RU tone set 1024, and the feedback 1026. The HE stations 504.1 through 504.N may then transmit on the subcamers or tones 810 that correspond to the RU tone set 1024. In some embodiments, the HE stations 504.1 through 504.N may determine what to transmit on the subcamers or tones 810 based on the HE- LTF sequence 1016. For example, as illustrated in FIG. 8, the RU tone set 1024 for HE station 504.1 is 810.1, 810.8, ... , 810.240.
  • the HE station 504.1 would determine whether the subcarrier for the HE-LTF sequence (e.g., as defined in the IEEE 802.1 lax standard) for the channel bandwidth (20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz) is a 1, 0, or -1.
  • the 1 indicates a positive voltage to transmit on subcarrier 810.1
  • a 0 indicates no transmission on the subcarrier 810.1
  • a -1 indicates a negative voltage to be transmitted on the subcarrier 810.1.
  • the HE station 504.1 determines what is to be transmitted on each subcarrier that is included in RU tone set 1024. The HE station 504.1 then transmits on the RU tone set 1024.
  • the RU tone set 1024 may have different tones to indicate different feedback 1026. For example, transmitting on a first set of RU tone set 1024 may indicate a 1, and transmitting on a second set of RU tone set 1024 may indicate a 0.
  • the HE AP 502 may receive the NDP feedback 808, 810, and 812.
  • the method 800 continues at operation 860 with the HE AP 502 waiting a period of time before transmitting.
  • the period of time may be a SIFS, in accordance with some embodiments.
  • the HE AP 502 made generate (and encode) a trigger frame 812 for UL transmissions based on the NDP feedback 808, 810, 812. For example, 10 HE stations 504 may indicate that they would like UL resources to transmit PPDUs to the HE AP 502. The HE AP 502 may provide RUs for UL transmissions to the 10 HE stations 504 in the trigger frame 812. The method 800 continues at operation 862 with the HE AP 502 transmitting the trigger frame 812.
  • the method 800 continues at operation 864 with the HE stations 504 waiting a period of time before transmitting.
  • the period of time may be a SIFS, in accordance with some embodiments.
  • the HE stations 504.1 through 504.N may determine if they are addressed in the trigger frame 812. As illustrated, only 4 of the HE stations 504 are addressed in the trigger frame 812.
  • the 4 addressed HE stations may generate (and encode) UL responses 814.
  • the UL responses 814 may be TB PPDUs with a data portion that comprises data for the HE AP 502 to process.
  • the method 800 continues at operation 866 with the HE stations
  • the HE AP 502 may decode the UL responses 814 and may transmit acknowledgments to the UL responses 814.
  • the trigger frame 812 may include downlink (DL) data for one or more of the HE stations 504.1 through 504.N.
  • DL downlink
  • One or more of the operations of method 800 may be optional. Additionally, method 800 may include one or more additional operations.
  • FIGS. 12-14 are disclosed in conjunction with one another.
  • FIG. 12-14 are disclosed in conjunction with one another.
  • FIG. 12 illustrates a tone set definition 1200 in the short feedback report in accordance with some embodiments.
  • the subcarriers or tones of FIGS. 12-14 may correspond to the same subcarriers or tones of HE-LTF 914. Illustrated in FIG. 12 is a 106 tone RU 1202 with 106 subcarriers or tones 1204.
  • the 106 tone RU 1202 is divided among 20 HE stations 504.1 through 504.20.
  • the 6 extra subcarriers or tones 1204.101 through 1204.106 may be divided a different way, e.g., not allocated to any HE station 504.
  • a RU tone set 1024 may include the subcarriers or tones as assigned in FIG. 12.
  • a RU tone set 1024 of HE station 504.1 may be 1204.1, 1204.21, 1204.41, 1204.61, 1204.81, and 1204.101.
  • FIG. 13 illustrates a tone set definition in the short feedback report 1300 in accordance with some embodiments. Illustrated in FIG. 13 is a 242 tone RU 1302 with 242 subcarriers or tones 1304.
  • the 242 tone RU 1302 is divided among 40 HE stations 504.1 through 504.40.
  • the 2 extra subcarriers or tones 1304.241 through 1304.242 may be divided a different way, e.g., not allocated to any HE station 504.
  • a RU tone set 1024 may include the subcarriers or tones as assigned in FIG. 13.
  • a RU tone set 1024 of HE station 504.1 may be 1304.1, 1304.41, 1304.81, 1304.121, 1304.161, 1304.201, and 1304.241.
  • FIG. 14 illustrates a tone set definition in the short feedback report 1400 in accordance with some embodiments. Illustrated in FIG. 14 is a 242 tone RU 1402 with 242 subcarriers or tones 1404.
  • the 242 tone RU 1402 is divided among 40 HE stations 504.1 through 504.40.
  • the 39 extra subcarriers or tones may be divided a different way, e.g., not allocated to any HE station 504.
  • a RU tone set 1024 may include the subcarriers or tones as assigned in FIG. 14.
  • a RU tone set 1024 of HE station 504.1 may be 1404.1, 1404.41, 1404.81, 1404.124, 1404.164, and 1404.204.
  • the subcarriers or tones may be indexed around a DC.
  • the subcarriers or tones may be numbered from -1 through -121 and from 1 to 122.
  • the subcarriers or tones may be offset for different channels or portions of the wireless spectrum. For example, if the subcarriers or tones refer to subcarriers or tones that are part of a secondary 20 MHz channel rather than the primary 20 MHz channel than an offset may be used to determine the location of the subcarrier or tone (e.g., +128, +242, -128, -242, etc.) The offset depends on the number of subcarriers and or tones of the 20 MHz channel.
  • the subcarriers or tones of the RU tone set 1024 may be divided into 2 or more sets where a response is indicated by transmitting on one of the 2 or more sets and not transmitting on the other sets. For example, if the RU tone set 1024 were divided into two sets, then a transmission on the first set may indicate a 1 and a transmission on the second set may indicate a 0.
  • the RU tone set 1024 may be split with 1404.1,
  • the tone set definition may be spread differently across the 20 MHz channel. For example, every 4 through 40th subcarrier or tone.
  • the tone set definition may include tones that are adjacent for the RU tone set 1024, e.g., when there is a first set of tones for a first response and a second set of tones for a second response. In some embodiments, there may be 6 subcarriers or tones each in a response for a RU tone set 1024.
  • one or more subcarriers or tones may be adjacent to one another for a RU tone set 1024.
  • the RU tone set 1024 may be interleaved with other RU tone sets 1024, e.g., every 2nd through 40th tone.
  • FIG. 15 illustrates a tone set definition in the short feedback report 1500, in accordance with some embodiments. Illustrated in FIG. 15 is N tones 1502, RU tones 1504, DC M tones 1506, RU tones 1508, and N tones 1510.
  • the N tones 1502 and N tones 1510 may be a number of tones, e.g., 1 to 34. N tones 1502 and N tones 1510 are not necessarily the same number of tones.
  • the DC M tones 1506 may be a number of tones, e.g., 1 to 25.
  • the RU tones 1504 and RU tones 1508 may be tones that are divided among a group HE stations 504 for RU tone sets 1024.
  • the tone set definition in the short feedback report 1500 may be for 20 MHz channel.
  • the N tones 1502, N tones 1510, and M tones 1506 may be termed puncture tones in accordance with some embodiments.
  • FIG. 16 illustrates a tone set definition in the short feedback report 1600 in accordance with some embodiments. Illustrated in FIG. 16 is N tones 1602, RU tones 1604, M tones 1606, RU tones 1608, N tones 1610, DC 1612, N tones 1615, RU tones 1616, M tones 1618, RU tones 1620, N tones 1622, tone definition 1 1650, and tone definition 2 1652. Tone definition 1 1650 and tone definition 2 1652 may be the same or similar as tone set definition in the short feedback report 1500.
  • FIG. 17 illustrates a tone set definition in the short feedback report 1700 in accordance with some embodiments. Illustrated in FIG. 17 is N tones 1702, RU tones 1704, M tones 1706, RU tones 1708, N tones 1710, N tones 1712, RU tones 1714, M tones 1716, RU tones 1618, N tones 1720, DC 1722, N tones 1724, RU tones 1726, M tones 1728, RU tones 1730, N tones 1732, N tones 1734, RU tones 1736, M tones 1738, RU tones 1740, N tones 1742, tone definition 1 1750, tone definition 2 1752, tone definition 3 1754, and tone definition 4 1756. Tone definition 1 1750, tone definition 2 1752, tone definition 3 1754, and tone definition 4 1756 may be the same or similar as tone set definition in the short feedback report 1500.
  • a unified tone index in the tone set organization may be used.
  • a 20 MHz HE station 504 may transmit with a 80 MHz HE station 504 without causing interference with the proper selection of N and M.
  • the N tones 1502, DC M tones 1506, N tones 1510, N tones 1602, M tones 1606, N tones 1610, N tones 1615, M tones 1618, N tones 1622 will overlap with one or more of N tones 1702, M tones 1706, N tones 1710, N tones 1712, M tones 1716, N tones 1720, N tones 1724, M tones 1728, N tones 1732, N tones 1734, M tones 1738, N tones 1742, and not overlap with RU tones 1704, RU tones 1708, tones 1714, RU tones 1718, tones 1726, RU tones 1730, tones 1736, or RU tones 1740. So, the tones used for an RU tone set 1024 for a HE station 504 transmitting on 20 MHz will not overlap with an RU tone set 1024 for a HE station 504 transmitting on a bandwidth of greater than 20 MHz.
  • tone definition 1 1750 Tone definition 1 1750, tone definition 2 1752, tone definition 3
  • tone definition 4 1756 may have offsets so that there is a unified tone index regardless of the bandwidth.
  • the RU tone sets 1024 may be reused among FIGS. 15-17 with offsets.
  • FIG. 18 illustrates a method 1800 for tone set definition in the short feedback report in accordance with some embodiments.
  • the method 1800 begins at operation 1802 with decoding a TF for a NDP feedback report poll, the TF comprising a feedback type field, the TF received from an HE access point.
  • HE stations 504.1 through 504.7 may decode TF for
  • the TF for NDP feedback report poll 808 may include a feedback type field 830, starting AID field 832, BW field 834, and spatial streams field 836.
  • the HE station 504 may determine if the HE station 504 is scheduled based on the TF for NDP feedback report poll 808 as disclosed in FIGS. 8-11.
  • the method may continue at operation 1804 with determining whether the TF indicates that the HE station is scheduled for an NDP feedback report response.
  • the HE station 504 may determine if the HE station 504 is scheduled based on the TF for NDP feedback report poll 808 as disclosed in FIGS. 8-11.
  • the method 1800 may continue at operation 1806 with when the
  • HE station is scheduled for an NDP feedback report response perform operations 1808-1814.
  • the method may continue at operation 1808 with determining a RU tone set index based on the TF for the NDP feedback report poll.
  • HE station 504 may determine RU tone set index 1018 as disclosed in conjunction with FIG. 10.
  • the method 1800 may continue at operation 1808 with determining a response to a feedback type indicated in the feedback type field.
  • HE station 504 may use feedback determiner 1014 to determine feedback 1026 as disclosed in conjunction with FIG. 10.
  • the method 1800 may continue at operation 1810 with determining a RU tone set based on the RU tone set index and the response.
  • RU tone set 1024 may include a first set tones that indicates a 1, and a second set of tones that indicates a 0.
  • the method 1800 may continue at operation 1812 with mapping tones of the RU tone set to a corresponding tone of a HE-LTF sequence.
  • HE-LTF sequence 1016 may be used by the HE station 504 to map each tone of the RU tone set to a corresponding tone of a HE-LTF sequence as disclosed in conjunction with FIGS. 8-11.
  • the HT-LTF sequence indicates a -1, 0, or +1.
  • the RU tone set may be 1 to 60 tones, e.g., 6 or 12 tones.
  • the method 1800 may continue at operation 1814 with configuring the HE station to transmit energy on the tones of the RU tone set in accordance with the corresponding tone of the HE-LTF sequence.
  • an apparatus of the HE station 504 may configure the HE station 504 to transmit
  • method 1800 may include one or more additional steps. In accordance with some embodiments, operations of method 1800 may be performed in a different order. In accordance with some embodiments, one or more operations of method 1800 may not be performed. Method 1800 may be performed by a HE station 504, an apparatus of a HE station 504, a HE access point 502, or an apparatus of a HE access point.
  • FIG. 19 illustrates a method 1900 for tone set definition in the short feedback report in accordance with some embodiments.
  • method 1900 may begin with encoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF comprising a feedback type field, indications of HE stations scheduled for an NDP feedback report response, and indications of resource unit (RU) tone sets for the HE stations to transmit the NDP feedback report response.
  • TF trigger frame
  • NDP null data packet
  • RU resource unit
  • HE access point 502 my encode TF for NDP feedback report poll 808 as disclosed in conjunction with FIGS . 8-11.
  • the method 1900 may continue at operation 1904 with configuring the HE access point to transmit the TF for the NDP feedback report to the stations.
  • an apparatus of the HE access point 502 may configure the HE access point 502 to transmit the TF for NDP feedback report poll 808 as disclosed in conjunction with FIGS. 8-11.
  • the method 1900 may continue with operation 1906 with decoding NDP feedback report responses from the stations in accordance with the RU tone sets.
  • HE access point 502 may decode NDP feedback 808, 810, and 812 from the HE stations 504.1 through 504.N as disclosed in conjunction with FIGS. 8-11.
  • the method 1900 may continue at operation 1908 with determining energy was transmitted on a RU tone set of the RU tone sets when tones of the RU tone set correspond to a corresponding tone set of a HE-LTF sequence, where the sequence indicates a -1, 0, or +1, and where the RU tone set corresponds to a response of 0 or 1 to a feedback type indicated in the feedback type field.
  • HE AP 502 may determine feedback from HE stations 1116 as disclosed in conjunction with FIG. 11.
  • the HT- LTF sequence indicates a -1, 0, or +1.
  • the RU tone set may be 1 to 60 tones, e.g., 6 or 12 tones.
  • method 1900 may include one or more additional steps. In accordance with some embodiments, operations of method 1900 may be performed in a different order. In accordance with some embodiments, one or more operations of method 1900 may not be performed. Method 1900 may be performed by a HE station 504, an apparatus of a HE station 504, a HE access point 502, or an apparatus of a HE access point.
  • Example 1 is an apparatus of a high-efficiency (HE) station, the apparatus including: memory; and processing circuitry coupled to the memory, the processing circuity configured to: decode a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, the TF received from an HE access point; determine whether the TF indicates that the HE station is scheduled for an NDP feedback report response; when the HE station is scheduled for an NDP feedback report response, determine a RU tone set index based on the TF for the NDP feedback report poll, determine a response to a feedback type indicated in the feedback type field, determine a RU tone set based on the RU tone set index and the response, map tones of the RU tone set to a corresponding tone of a HE long-training field (HE-LTF) sequence, and configure the HE station to transmit energy on the tones of the RU tone set in accordance with the corresponding tone of the HE-LTF sequence.
  • HE-LTF HE
  • Example 2 the subject matter of Example 1 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets where the sequence indicates a -1, 0, or +1.
  • Example 3 the subject matter of Example 2 optionally includes where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 4 the subject matter of any one or more of Examples 1-3 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 5 the subject matter of Example 4 optionally includes where the same number is based on a number of RU tone sets in a channel and a number of tones in the RU tone set.
  • Example 6 the subject matter of any one or more of Examples 1-5 optionally include where the processing circuitry is further configured to: configure the HE station to transmit a HE trigger-based (TB) Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), where each tone of the RU tone set is part of a HE-LTF of the HE TB PPDU.
  • TB HE trigger-based
  • PLCP Physical Layer Convergence Procedure
  • PPDU Protocol Data Unit
  • Example 7 the subject matter of any one or more of Examples 1-6 optionally include MHz channel including a first fixed number of tones, and where the tones of the RU are not part of: a second fixed number of center null tones of the channel, a third fixed number of null tones on a left side of the channel, and a fourth fixed number of null tones on a right side of the channel.
  • Example 8 the subject matter of Example 7 optionally includes where the first fixed number is 242, the second fixed number is 3 to 12, the third fixed number is 2 to 12, and the fourth fixed number is 2 to 12.
  • Example 9 the subject matter of any one or more of Examples
  • the TF for the NDP feedback report poll further comprises a bandwidth field, the bandwidth field indicating a bandwidth to transmit the response, where the bandwidth field indicates one of the following group: 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, and 160 MHz.
  • Example 10 the subject matter of Example 9 optionally includes where the processing circuitry is further configured to: when the HE station is limited to transmitting a 20 MHz response, and the bandwidth field indicates the bandwidth to transmit the NDP feedback report response is greater than 20 MHz, tones of the RU tone set are not part of a group of tones of the 20 MHz response that interfere with tones of the 80 MHz, 80+80 MHz, or 160 MHz NDP feedback report response.
  • Example 1 the subject matter of any one or more of
  • Examples 9-10 optionally include where the processing circuitry is further configured to: when the HE station is limited to transmitting a 20 MHz response, and the bandwidth field indicates the bandwidth to transmit the NDP feedback report response is greater than 20 MHz, tones of the RU tone set are not part of a group of tones of the 20 MHz response that are punctured to align with punctured tones of the 80 MHz, 80+80 MHz, or 160 MHz NDP feedback report response of other HE stations.
  • Example 12 the subject matter of any one or more of Examples 1-11 optionally include where the processing circuitry is further configured to: configure the HE station to refrain from transmitting energy on tones that are not part of the RU tone set.
  • Example 13 the subject matter of any one or more of
  • Examples 1-12 optionally include where the HE station and the HE access point are each one from the following group: an Institute of Electrical and Electronic Engineers (IEEE) 802.1 lax 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 14 the subject matter of any one or more of
  • Examples 1-13 optionally include transceiver circuitry coupled to the processing circuitry; and, one or more antennas coupled to the transceiver circuitry, where the memory is configured to store the NDP feedback report poll.
  • Example 15 is a non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of a high-efficiency (HE) station, the instructions to configure the one or more processors to: decode a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, the TF received from an HE access point; determine whether the TF indicates that the HE station is scheduled for an NDP feedback report response; when the HE station is scheduled for an NDP feedback report response, determine a RU tone set index based on the TF for the NDP feedback report poll, determine a response to a feedback type indicated in the feedback type field, determine a RU tone set based on the RU tone set index and the response, map tones of the RU tone set to a corresponding tone of a HE long-training field (HE-LTF) sequence, and configure the HE station to transmit energy on the tones of the RU tone set in accordance with the corresponding tone of
  • Example 16 the subject matter of Example 15 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, and where the sequence indicates a -1, 0, or +1. [00173] In Example 17, the subject matter of any one or more of
  • Examples 14-16 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 18 is a method performed by an apparatus of a high- efficiency (HE) station, the method including: decoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, the TF received from an HE access point; determining whether the TF indicates that the HE station is scheduled for an NDP feedback report response; when the HE station is scheduled for an NDP feedback report response, determining a RU tone set index based on the TF for the NDP feedback report poll, determining a response to a feedback type indicated in the feedback type field, determining a RU tone set based on the RU tone set index and the response, mapping tones of the RU tone set to a corresponding tone of a HE long -training field (HE-LTF) sequence, and configuring the HE station to transmit energy on the tones of the RU tone set in accordance with the corresponding tone of the HE-LTF sequence.
  • HE-LTF HE long -training field
  • Example 19 the subject matter of Example 18 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, and where the sequence indicates a -1, 0, or +1.
  • Example 20 is an apparatus of a high-efficiency (HE) access point, the apparatus including: memory; and processing circuitry coupled to the memory, the processing circuity configured to: encode a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, indications of HE stations scheduled for an NDP feedback report response, and indications of resource unit (RU) tone sets for the HE stations to transmit the NDP feedback report response; configure the HE access point to transmit the TF to the HE stations; decode NDP feedback report responses from the HE stations in accordance with the RU tone sets; and determine energy was transmitted on a RU tone set of the RU tone sets when tones of the RU tone set correspond to a corresponding tone of a HE long-training field (HE-LTF) sequence.
  • TF trigger frame
  • NDP null data packet
  • RU resource unit
  • Example 21 the subject matter of Example 20 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, where the sequence indicates a -1, 0, or +1, and where the RU tone set corresponds to a response of 0 or 1 to a feedback type indicated in the feedback type field.
  • Example 22 the subject matter of any one or more of Examples 20-21 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 23 the subject matter of any one or more of
  • Examples 20-22 optionally include where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 24 the subject matter of any one or more of
  • Examples 20-23 optionally include where the processing circuitry is further configured to: decode HE trigger-based (TB) Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDUs) from the stations, where each tone of the RU tone sets is part of a HE-LTF of a corresponding HE TB PPDU.
  • TB decode HE trigger-based
  • PLCP Physical Layer Convergence Procedure
  • PPDUs Protocol Data Unit
  • Example 25 the subject matter of any one or more of
  • Examples 20-24 optionally include transceiver circuitry coupled to the processing circuitry; and, one or more antennas coupled to the transceiver circuitry, where the memory is configured to store the trigger frame.
  • Example 26 is a non-transitory computer-readable storage medium that stores instructions for execution by one or more processors of an apparatus of a high-efficiency (HE) station, the instructions to configure the one or more processors to: encode a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, indications of HE stations scheduled for an NDP feedback report response, and indications of resource unit (RU) tone sets for the HE stations to transmit the NDP feedback report response; configure the HE access point to transmit the TF to the HE stations; decode NDP feedback report responses from the HE stations in accordance with the RU tone sets; and determine energy was transmitted on a RU tone set of the RU tone sets when tones of the RU tone set correspond to a corresponding tone of a HE long-training field (HE-LTF) sequence.
  • TF trigger frame
  • NDP null data packet
  • RU resource unit
  • Example 27 the subject matter of Example 26 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, where the sequence indicates a -1, 0, or +1, and where the RU tone set corresponds to a response of 0 or 1 to a feedback type indicated in the feedback type field.
  • Example 28 the subject matter of any one or more of
  • Examples 26-27 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 29 the subject matter of any one or more of
  • Examples 26-28 optionally include where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 30 the subject matter of any one or more of
  • Examples 26-29 optionally include where the instructions further configure the one or more processors to: decode HE trigger-based (TB) Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDUs) from the stations, where each tone of the RU tone sets is part of a HE-LTF of a corresponding HE TB PPDU.
  • TB decode HE trigger-based
  • PLCP Physical Layer Convergence Procedure
  • PPDUs Protocol Data Unit
  • Example 31 is a method performed by an apparatus of a high- efficiency (HE) station, the method including: encoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, indications of HE stations scheduled for an NDP feedback report response, and indications of resource unit (RU) tone sets for the HE stations to transmit the NDP feedback report response; configuring the HE access point to transmit the TF to the HE stations; decoding NDP feedback report responses from the HE stations in accordance with the RU tone sets; and determining energy was transmitted on a RU tone set of the RU tone sets when tones of the RU tone set correspond to a corresponding tone of a HE long-training field (HE-LTF) sequence.
  • HE-LTF HE long-training field
  • Example 32 the subject matter of Example 31 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, where the sequence indicates a -1, 0, or +1, and where the RU tone set corresponds to a response of 0 or 1 to a feedback type indicated in the feedback type field.
  • Example 33 the subject matter of any one or more of
  • Examples 3 1-32 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 34 the subject matter of any one or more of
  • Examples 3 1-33 optionally include where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 35 the subject matter of any one or more of
  • Examples 3 1-34 optionally include where the method further comprises:
  • HE trigger-based TB
  • PLCP Physical Layer Convergence Procedure
  • PPDUs Protocol Data Unit
  • Example 36 is an apparatus of a high-efficiency (HE) station, the apparatus including: means for encoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, indications of HE stations scheduled for an NDP feedback report response, and indications of resource unit (RU) tone sets for the HE stations to transmit the NDP feedback report response; means for configuring the HE access point to transmit the TF to the HE stations; means for decoding NDP feedback report responses from the HE stations in accordance with the RU tone sets; and means for determining energy was transmitted on a RU tone set of the RU tone sets when tones of the RU tone set correspond to a corresponding tone of a HE long- training field (HE-LTF) sequence.
  • HE-LTF HE long- training field
  • Example 37 the subject matter of Example 36 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, where the sequence indicates a -1, 0, or +1, and where the RU tone set corresponds to a response of 0 or 1 to a feedback type indicated in the feedback type field.
  • Example 38 the subject matter of any one or more of
  • Examples 36-37 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 39 the subject matter of any one or more of
  • Examples 36-38 optionally include where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 40 the subject matter of any one or more of
  • Examples 36-39 optionally include where the apparatus further comprises: means for decoding HE trigger-based (TB) Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDUs) from the stations, where each tone of the RU tone sets is part of a HE-LTF of a corresponding HE TB PPDU.
  • TB HE trigger-based
  • PLCP Physical Layer Convergence Procedure
  • PPDUs Protocol Data Unit
  • Example 41 is an apparatus of a high-efficiency (HE) station, the apparatus including: means for decoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including a feedback type field, the TF received from an HE access point; means for determining whether the TF indicates that the HE station is scheduled for an NDP feedback report response; when the HE station is scheduled for an NDP feedback report response, means for determining a RU tone set index based on the TF for the NDP feedback report poll, means for determining a response to a feedback type indicated in the feedback type field, means for determining a RU tone set based on the RU tone set index and the response, means for mapping tones of the RU tone set to a corresponding tone of a HE long-training field (HE-LTF) sequence, and means for configuring the HE station to transmit energy on the tones of the RU tone set in accordance with the corresponding tone of the HE-LTF sequence.
  • HE-LTF
  • Example 42 the subject matter of Example 41 optionally includes where the RU tone set comprises 12 tones interleaved with other RU tone sets, and where the sequence indicates a -1, 0, or +1.
  • Example 43 the subject matter of Example 42 optionally includes where the -1 indicates to transmit a negative voltage, a 0 indicates not to transmit energy, and a +1 indicates to transmit a positive voltage.
  • Example 44 the subject matter of any one or more of
  • Examples 41-43 optionally include where an index of each tone of the RU tone set is increased a same number from an index of a previous tone of the RU tone set, where the same number is from two to forty.
  • Example 45 the subject matter of Example 44 optionally includes where the same number is based on a number of RU tone sets in a channel and a number of tones in the RU tone set.
  • Example 46 the subject matter of any one or more of
  • Examples 41-45 optionally include where the apparatus further comprises: means for configuring the HE station to transmit a HE trigger-based (TB) Physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), where each tone of the RU tone set is part of a HE-LTF of the HE TB PPDU.
  • TB HE trigger-based
  • PLCP Physical Layer Convergence Procedure
  • PPDU Protocol Data Unit
  • Example 47 the subject matter of any one or more of
  • Examples 41-46 optionally include MHz channel including a first fixed number of tones, and where the tones of the RU are not part of: a second fixed number of center null tones of the channel, a third fixed number of null tones on a left side of the channel, and a fourth fixed number of null tones on a right side of the channel.
  • Example 48 the subject matter of Example 47 optionally includes where the first fixed number is 242, the second fixed number is 3 to 12, the third fixed number is 2 to 12, and the fourth fixed number is 2 to 12.
  • Example 49 the subject matter of any one or more of
  • Examples 41-48 optionally include where the TF for the NDP feedback report poll further comprises a bandwidth field, the bandwidth field indicating a bandwidth to transmit the response, where the bandwidth field indicates one of the following group: 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, and 160 MHz.
  • Example 50 the subject matter of Example 49 optionally includes where when the HE station is limited to transmitting a 20 MHz response, and the bandwidth field indicates the bandwidth to transmit the NDP feedback report response is greater than 20 MHz, tones of the RU tone set are not part of a group of tones of the 20 MHz response that interfere with tones of the 80 MHz, 80+80 MHz, or 160 MHz NDP feedback report response.
  • Example 51 the subject matter of any one or more of
  • Examples 49-50 optionally include where when the HE station is limited to transmitting a 20 MHz response, and the bandwidth field indicates the bandwidth to transmit the NDP feedback report response is greater than 20 MHz, tones of the RU tone set are not part of a group of tones of the 20 MHz response that are punctured to align with punctured tones of the 80 MHz, 80+80 MHz, or 160 MHz NDP feedback report response of other HE stations.
  • Example 52 the subject matter of any one or more of
  • Examples 41-51 optionally include where the apparatus further comprises: means for configuring the HE station to refrain from transmitting energy on tones that are not part of the RU tone set.
  • Example 53 the subject matter of any one or more of
  • Examples 41-52 optionally include where the HE station and the HE access point are each one from the following group: an Institute of Electrical and Electronic Engineers (IEEE) 802.1 lax access point, an IEEE 802.1 lax station, an IEEE 802.1 1 station, and an IEEE 802.1 1 access point.
  • IEEE Institute of Electrical and Electronic Engineers

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un support lisible par ordinateur, des procédés et des appareils permettant une définition d'ensemble de tonalités dans le rapport de rétroaction court. Un appareil comprenant des circuits de traitement est décrit, les circuits de traitement étant configurés de manière à décoder une trame de déclenchement (TF) pour une interrogation de rapport de rétroaction concernant un paquet de données vide (NDP), la TF comportant un champ de type de rétroaction et une indication précisant si la station HE est programmée pour une réponse au rapport de rétroaction NDP. Les circuits de traitement peuvent en outre être configurés, lorsque la station HE est programmée pour une réponse au rapport de rétroaction NDP, de manière à déterminer un indice d'ensemble de tonalités RU sur la base de la TF pour l'interrogation de rapport de rétroaction NDP, à déterminer une réponse au type de rétroaction, à déterminer un ensemble de tonalités RU sur la base de l'indice d'ensemble de tonalités RU et de la réponse, et à mettre en correspondance chaque tonalité de l'ensemble de tonalités RU à une tonalité correspondante d'une séquence de champ d'apprentissage long HE (HE-LTF).
PCT/US2017/068238 2017-01-25 2017-12-22 Définition d'ensemble de tonalités dans le rapport de rétroaction court WO2018140187A1 (fr)

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WO2021050001A1 (fr) * 2019-09-13 2021-03-18 Panasonic Intellectual Property Corporation Of America Appareil de communication et procédé de communication pour opération de demande de répétition automatique hybride
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EP4387355A4 (fr) * 2021-08-24 2024-12-18 Huawei Technologies Co., Ltd. Procédé de transmission de séquences de champs d'apprentissage longs et dispositif de communication

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EP3568937A1 (fr) * 2017-01-10 2019-11-20 C/o Canon Kabushiki Kaisha Procédés de communication, station de dispositif de communication et point d'accès
US11844081B2 (en) * 2017-01-10 2023-12-12 Canon Kabushiki Kaisha Communication methods, communication device station and access point
US20210368497A1 (en) * 2017-01-10 2021-11-25 Canon Kabushiki Kaisha Communication methods, communication device station and access point
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US20220124718A1 (en) * 2018-01-17 2022-04-21 Intel Corporation Enhanced tone mapping for trigger-based null data packet feedback
US11218275B2 (en) 2018-02-20 2022-01-04 Avago Technologies International Sales Pte. Limited Punctured null data packet (NDP) within wireless communications
EP3528420A1 (fr) * 2018-02-20 2019-08-21 Avago Technologies International Sales Pte. Limited Paquet de données nulles (ndp) discontinues dans les communications sans fil
GB2585229B (en) * 2019-07-04 2021-10-27 Canon Kk Variable configurations of NFRP RU tone sets in wireless networks
WO2021001316A1 (fr) * 2019-07-04 2021-01-07 Canon Kabushiki Kaisha Configurations variables d'ensembles de tonalités de ru nfrp dans des réseaux sans fil
CN114080776A (zh) * 2019-07-04 2022-02-22 佳能株式会社 无线网络中的nfrp ru频调集的可变配置
US12021769B2 (en) 2019-07-04 2024-06-25 Canon Kabushiki Kaisha Variable configurations of NFRP RU tone sets in wireless networks
CN114080776B (zh) * 2019-07-04 2024-05-24 佳能株式会社 无线网络中的nfrp ru频调集的可变配置
GB2585229A (en) * 2019-07-04 2021-01-06 Canon Kk Variable configurations of NFRP RU tone sets in wireless networks
WO2021050001A1 (fr) * 2019-09-13 2021-03-18 Panasonic Intellectual Property Corporation Of America Appareil de communication et procédé de communication pour opération de demande de répétition automatique hybride
CN114303335B (zh) * 2019-09-13 2024-04-09 松下电器（美国）知识产权公司 用于混合自动重复请求操作的通信装置和通信方法
CN114303335A (zh) * 2019-09-13 2022-04-08 松下电器（美国）知识产权公司 用于混合自动重复请求操作的通信装置和通信方法
US12177023B2 (en) 2019-09-13 2024-12-24 Panasonic Intellectual Property Corporation Of America Communication apparatus and communication method for hybrid automatic repeat request operation
US11438968B2 (en) * 2019-10-29 2022-09-06 Intel Corporation Non-contiguous resource units for wireless local-area networks (WLANs)
CN113839752B (zh) * 2020-06-08 2023-08-22 华为技术有限公司 传输/接收物理层协议数据单元的方法和装置
CN113839752A (zh) * 2020-06-08 2021-12-24 华为技术有限公司 传输/接收物理层协议数据单元的方法和装置
EP4387355A4 (fr) * 2021-08-24 2024-12-18 Huawei Technologies Co., Ltd. Procédé de transmission de séquences de champs d'apprentissage longs et dispositif de communication

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