WO2018195354A1

WO2018195354A1 - Addressing for short feedback

Info

Publication number: WO2018195354A1
Application number: PCT/US2018/028435
Authority: WO
Inventors: Laurent Cariou; Qinghua Li; Xiaogang Chen; Huaning Niu; Wenting CHANG; Feng Jiang
Original assignee: Intel IP Corporation
Priority date: 2017-04-19
Filing date: 2018-04-19
Publication date: 2018-10-25

Abstract

Apparatuses, computer readable media, and methods for addressing for short feedback. An apparatus for address for short feedback including processing circuitry configured to decode a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF comprising user information fields, wherein the user information fields indicate ranges of association identifications (AIDs), and where the TF further comprises a feedback type field, the TF received from an HE access point. The processing circuitry may be further configured to determine whether the TF indicates that the HE station is scheduled for an NDP feedback report response based on the range of AIDs indicated by the user information fields.

Description

ADDRESSING FOR SHORT FEEDBACK

PRIORI FY CLAIM

This application claims the benefit of priority to United States

Provisional Patent Application Serial No 62/487, 177, filed April 19, 2017, United States Provisional Patent Application Serial No 62/633,238, filed

February 21 , 2018, and United States Provisional Patent Application Serial No 62/487,225, filed April 19, 2017, each of which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

[0002] Embodiments pertain to wireless networks and wireless communications. Some embodiments relate to wireless local area networks (WL ANs) and Wi-Fi networks including networks operating in accordance with the IEEE 802.1 1 family of standards. Some embodiments relate to IEEE

802.1 lax/az. Some embodiments relate to methods, computer readable media, and apparatus for addressing for short feedback. Some embodiments relate to physical layout of resource units for short feedback.

0003] Efficient use of the resources of a wireless local-area network

(WLAN) is important to provide bandwidth and acceptable response times to the users of the WLAN. However, often there are many devices trying to share the same resources and some devices may be limited by the communication protocol they use or by their hardware bandwidth. Moreover, wireless devices may need to operate with both newer protocols and with legacy device protocols.

BRIEF DESCRIPTION OF THE DRAWINGS [0004] The present disclosure is illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements and in which:

[0005] FIG. 1 is a block diagram of a radio architecture in accordance with some embodiments,

[0006] FIG. 2 illustrates a front-end module circuitry for use in the radio architecture of FIG. I in accordance with some embodiments;

[0007] FIG. 3 illustrates a radio integrated circuit (IC) circuity for use in the radio architecture of FIG. 1 in accordance with some embodiments;

[0008] FIG. 4 illustrates a baseband processing circuitry for use in the radio architecture of FIG.1 in accordance with some embodiments;

[0009] FIG. 5 illustrates a WLAN in accordance with some

embodiments;

[0010] 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;

[0011 j 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;

[0012] FIG. 9 illustrates a high-efficiency (HE) trigger based (TB) NDP feedback a physical Layer Convergence Procedure (PLCP) Protocol Data Unit (PPDU), in accordance with some embodiments;

[0013] FIG. 10 illustrates a HE station in accordance with some embodiments;

[0014] FIG. 11 illustrates a HE access point (AP) in accordance with some embodiments;

[0015] FIG. 12 illustrates a trigger frame in accordance with some embodiments;

[0016] FIG. 13 illustrates a common information field in accordance with some embodiments;

[0017] FIG. 14 illustrates addressing for short feedback in accordance with some embodiments, [0018] FIG. 15 illustrates addressing for short feedback in accordance with some embodiments;

[0019] FIG. 16 illustrates addressing for short feedback in accordance with some embodiments;

[0020] FIG 17 illustrates addressing for short feedback in accordance with some embodiments;

[0021] FIG. 18 illustrates addressing for short feedback in accordance with some embodiments;

[0022] FIG. 19 illustrates addressing for short feedback in accordance with some embodiments,

[0023] FIG. 20 illustrates a method of addressing for short feedback in accordance with some embodiments; and

[0024] FIG. 21 illustrates a method of addressing for short feedback in accordance with some embodiments.

DESCRIPTION

[0025] The following description and the drawings sufficiently illustrate specific embodiments to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. Portions and features of some embodiments may be included in, or substituted for, those of other embodiments. Embodiments set forth in the claims encompass all available equivalents of those claims.

[0026] 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. In this disclosure, "WLAN" and "Wi-Fi" are used interchangeably.

[0027] FEM circuitry 104 may include a WLAN or Wi-Fi FEM circuitry

104A and a Bluetooth (BT) FEM circuitry 104B. 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 . In addition, FEM circuitry 104B ma 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. In the embodiment of FIG. 1 , although FEM 104 A 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.

[0028] Radio IC circuitry 106 as shown may include WLAN radio IC circuitry 106 A 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 04A 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 108A and provide WLAN RF output signals to the FEM circuitry 104 A 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. In the embodiment of FIG. 1, although 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.

[0029] Baseband processing circuity 108 may include a WLAN baseband processing circuitry 108 A and a BT baseband processing circuitry

108B. The WLAN baseband processing circuitry 108 A may include a memory, such as, for example, a set of RAM arrays in a Fast Fourier Transform or Inverse Fast Fourier Transform block (not shown) of the WLAN baseband processing circuitry 108 A. Each of the WLAN baseband circuitry 108 A and the BT baseband circuitry 108B may further include one or more processors and control logic to process the signals received from the corresponding WLAN or BT receive signal path of the radio IC circuitry 106, and to also generate

corresponding WLAN or BT baseband signals for the transmit signal path of the radio IC circuitry 106. Each of the baseband processing circuitries 108A and 108B may further include physical layer (PHY) and medium access control layer (MAC) circuitry, and may further interface with application processor 1 11 for generation and processing of the baseband signals and for controlling operations of the radio IC circuitry 106.

|0030| Referring still to FIG. 1, according to the shown embodiment, 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. In addition, a switch 103 may be provided between the WLAN FEM circuitry 1.04 A and the BT FEM circuitry 104B to allow switching between the WLAN and BT radios according to application needs. In addition, although 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 104 A or 104B.

[0031] In some embodiments, the front-end module circuitry 104, the radio IC circuitiy 106, and baseband processing circuitiy 108 may be provided on a single radio card, such as wireless radio card 102, In some other embodiments, the one or more antennas 101, the FEM circuitry 04 and the radio IC circuitry 106 may be provided on a single radio card. In some other embodiments, 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 1 12.

[0032] In some embodiments, the wireless radio card 102 may include a

WL AN radio card and may be configured for Wi-Fi communications, although the scope of the embodiments is not limited in this respect. In some of these embodiments, 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. The OFDM or OFDMA signals may comprise a plurality of orthogonal subcarriers.

[0033] In some of these multicarrier embodiments, radio architecture 100 may be part of a Wi-Fi communication station (STA) such as a wireless AP, a base station or a mobile device including a Wi-Fi device. In some of these embodiments, radio architecture 100 may be configured to transmit and receive signals in accordance with specific communication standards and/or protocols, such as any of the Institute of Electrical and Electronics Engineers (IEEE) standards including, IEEE 802.1 ln-2009, IEEE 802.11-2012, IEEE 802.11- 2016, , IEEE 802.1 lac, and/or IEEE 802.1 lax standards and/or proposed specifications for WLA s, 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.

[0034] In some embodiments, the radio architecture 100 may be configured for high-efficiency (HE) Wi-Fi (HEW) communications in accordance with the IEEE 802.1 l ax standard. In these embodiments, 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.

[0035] In some other embodiments, 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.

[0036] In some embodiments, as further shown in FIG. 1, 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. In embodiments that include BT functionality as shown for example in Fig. 1, 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. In some of the embodiments that include functionality, 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. In some of these embodiments that include a BT functionality, 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. In some embodiments, as shown in FIG. 1, 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

[0037] In some embodiments, the radio-architecture 100 may include other radio cards, such as a cellular radio card configured for cellular (e.g., 3 GPP such as LTE, LTE- Advanced or 5G communications).

[0038] In some IEEE 802.11 embodiments, 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). In some embodiments, a 320 MHz channel bandwidth may be used. The scope of the embodiments is not limited with respect to the above center frequencies however.

[0039 j FIG. 2 illustrates FEM circuitry 200 in accordance with some embodiments. The FEM circuitn,' 200 is one example of circuitry that may be suitable for use as the WLAN and/or BT FEM circuitry 104 A/104B (FIG. 1), although other circuitry configurations may also be suitable.

[0040] In some embodiments, the FEM circuitry 200 may include a

TX'HX switch 202 to switch between transmit mode and receive mode operation. The FEM circuitn,' 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)). The transmit signal path of the circuitn,' 200 may include a power amplifier (PA) to amplify input RF signals 209 (e.g., provided b the radio IC circuitry 106), and one or more filters 212, such as band-pass filters (BPFs), low-pass filters (EPFs) 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))·

[0041 ] In some dual-mode embodiments for Wi-Fi communication, the

FEM circuitry 200 may be configured to operate in either the 2.4 GHz frequency spectrum or the 5 GHz frequency spectrum. In these embodiments, the receive signal path of the FEM circuitry 200 may include a receive signal path duplexer 204 to separate the signal s from each spectrum as wel l as provide a separate LNA 206 for each spectrum as shown. In these embodiments, 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). In some embodiments, 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.

[0042] FIG. 3 illustrates radio integrate circuit (IC) circuitry 300 in accordance with some embodiments. The radio IC circuitiy 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.

[0043] In some embodiments, 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 circuitiy 308. The transmit signal path of the radio IC circuitry 300 may include at least filter circuitry 312 and mixer circuitiy 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. The latter type of circuitry presents a much simpler architecture as compared with standard super-heterodyne mixer circuitries, and any flicker noise brought about by the same may be alleviated for example through the use of OFDM modulation. Fig. 3 illustrates only a simplified version of a radio IC circuitiy, and may include, although not shown, embodiments where each of the depicted circuitries may include more than one component. For instance, mixer circuitry 320 and/or 314 may each include one or more mixers, and 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. For example, when mixer circuitries are of the direct-conversion type, they may each include two or more mixers.

|Ό0441 In some embodiments, 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 circuitiy 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. In some embodiments, the output baseband signals 307 may be zero-frequency baseband signals, although this is not a requirement. In some embodiments, mixer circuitry 302 may comprise passive mixers, although the scope of the embodiments is not limited in this respect.

[0045] In some embodiments, the mixer circuitry 314 may be configured to up-convert input baseband signals 311 based on the synthesized frequency 305 provided by the synthesizer circuitry 304 to generate RF output signals 209 for the FEM circuitry 104. The baseband signals 311 may be provided by the baseband processing circuitry 108 and may be filtered by filter circuitry 312. The filter circuitry 312 may include a LPF or a BPF, although the scope of the embodiments is not limited in this respect.

[0046] In some embodiments, 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-con version respectively with the help of synthesizer 304. In some embodiments, 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). In some embodiments, the mixer circuitry 302 and the mixer circuitry 314 may be arranged for direct down- conversion and/or direct up-conversion, respectively. In some embodiments, the mixer circuitry 302 and the mixer circuitry 314 may be configured for superheterodyne operation, although this is not a requirement.

[0047] Mixer circuitry 302 may comprise, according to one embodiment: quadrature passive mixers (e.g., for the in-phase (I) and quadrature phase (Q) paths). In such an embodiment, 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

[0048] Quadrature passive mixers may be driven by zero and ninety- degree time-varying LO switching signals provided by a quadrature circuitry which may be configured to receive a LO frequency (fLo) from a local oscillator or a synthesizer, such as LO frequency 305 of synthesizer 304 (FIG. 3). In some embodiments, 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). In some embodiments, 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.

[0049] In some embodiments, the LO signals may differ in duty cycle

(the percentage of one period in which the LO signal is high) and/or offset (the difference between start points of the period). In some embodiments, the LO signals may have a 25% duty cycle and a 50% offset. In some embodiments, each branch of the mixer circuitry (e.g., the in-phase (I) and quadrature phase (Q) path) may operate at a 25% duty cycle, which may result in a significant reduction is power consumption.

[0050] The RF input signal 207 (FIG. 2) 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),

[0051] In some embodiments, the output baseband signals 307 and the input baseband signals 31 1 may be analog baseband signals, although the scope of the embodiments is not limited in this respect. In some alternate

embodiments, the output baseband signals 307 and the input baseband signals 311 may be digital baseband signals. In these alternate embodiments, the radio IC circuitry may include analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuitry.

[0052] In some dual-mode embodiments, 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,

[0053] In some embodiments, 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. For example, synthesizer circuitry 304 may be a delta-sigma synthesizer, a frequency multiplier, or a synthesizer comprising a phase-locked loop with a frequency divider. According to some embodiments, the synthesizer circuitry 304 may include digital synthesizer circuitry. An advantage of using a digital synthesizer circuitry is that, although it may still include some analog components, its footprint may be scaled down much more than the footprint of an analog synthesizer circuitry. In some embodiments, frequency input into synthesizer circuity 304 may be provided by a voltage controlled oscillator (VCO), although that is not a requirement. A divider control input may further be provided by either the baseband processing circuitry 108 (FIG. 1) or the application processor 1 1 1 (FIG. 1) depending on the desired output frequency 305. In some embodiments, 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.

[0054] In some embodiments, synthesizer circuitiy 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 (fi.o).

[0055] 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 circuitiy that may be suitable for use as the baseband processing circuitiy 108 (FIG. 1), although other circuitiy 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 circuitiy 106 (FIG. 1) and a transmit baseband processor (TX BBP) 404 for generating transmit baseband signals 311 for the radio IC circuitry 106. The baseband processing circuitry 400 may also include control logic 406 for coordinating the operations of the baseband processing circuitry 400.

[0056] In some embodiments (e.g., when analog baseband signals are exchanged between the baseband processing circuitiy 400 and the radio IC circuitry 106), 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. In these

embodiments, the baseband processing circuitry 400 may also include DAC 412 to convert, digital baseband signals from the TX BBP 404 to analog baseband signals.

[0057] In some embodiments that communicate OFDM signals or

OFDMA signals, such as through baseband processor 108A„ 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. In some embodiments, the receive baseband processor 402 may be configured to detect the presence of an OFDM signal or OFDM A 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.

[0058] Referring back to FIG. 1, in some embodiments, the antennas 101

(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. In some multiple-input multiple-output (MIMO) embodiments, 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.

[0059] Although 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. For example, 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. In some embodiments, the functional elements may refer to one or more processes operating on one or more processing elements.

[0060] 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 FIE AP 502, which may be an AP, a plurality of high-effi ciency wireless (e.g., IEEE 802.1 lax) (HE) stations 504, and a plurality of legacy (e.g., IEEE 802.11n/ac) devices 506.

[0061] The FIE 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, 1 1 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 (QFDMA), time division multiple access (TDMA), and/or code division multiple access (CDMA). The IEEE 802. 1 1 protocol may include a multiple access technique. For example, the IEEE 802.1 1 protocol may include space-division multiple access (SDMA) and/or multiple-user multiple-input multiple-output (MU-MIMQ). 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 HE APs 502.

[0062] 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/az, 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. In some embodiments, the HE STAs 504 may be termed high efficiency (HE) stations.

[0063] The HE AP 502 may communicate with legacy devices 506 in accordance with legacy IEEE 802.11 communication techniques. In example embodiments, the HE AP 502 may also be configured to communicate with HE

STAs 504 in accordance with legacy IEEE 802, 11 communication techniques. [0064] In some embodiments, a HE frame may be configurable to have the same bandwidth as a channel. The HE frame may be a PPDU. In some embodiments, there may be different types of PPDUs that may have different fields and different physical layers and/or different media access control (MAC) layers.

[0065] The bandwidth of a channel may be 20MHz, 40M I i/. or 80M I i/.

160MHz, 320MHz contiguous bandwidths or an 8Q+80MHz (160MHz) noncontiguous bandwidth. In some embodiments, 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. In some embodiments the bandwidth of the channels may be based on a number of active data subcarriers. In some embodiments the bandwidth of the channels is based on 26, 52, 106, 242, 484, 996, or 2x996 active data subcarriers or tones that are spaced by 20 MHz. In some embodiments the bandwidth of the channels is 256 tones spaced by 20

MHz. In some embodiments the channels are multiple of 26 tones or a multiple of 20 MHz. In some embodiments a 20 MHz channel may comprise 242 active data subcarriers or tones, which may determine the size of a Fast Fourier Transform (FFT). 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.

[0066] In some embodiments, the 26-subcarrier RU and 52-subcarrier

RU are used in the 20 MHz, 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDMA HE PPDU formats. In some embodiments, 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. In some embodiments, the 242-subearrier RU is used in the 40 MHz, 80 MHz, 160 MHz and 80+80 MHz OFDMA and MU- MIMO HE PPDU formats. In some embodiments, the 484-subcarrier RU is used in the 80 MHz, 160 MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats. In some embodiments, the 996-subcarrier RU is used in the 160

MHz and 80+80 MHz OFDMA and MU-MIMO HE PPDU formats.

[0067] 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, In other embodiments, the HE AP 502, HE ST A 504, and/or legacy device 506 may also implement different technologies such as code division multiple access (CDMA) 2000, CDMA 2000 I X, CDM A 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.

[0068] Some embodiments relate to HE communications. In accordance with some IEEE 802.1 1 embodiments, e.g, IEEE 802.1 lax embodiments, 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 peri od. In some embodiments, the HE control period may be termed a transmission opportunity (TXOP). 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. During the HE control period, 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. During the HE control period, the HE AP 502 may communicate with HE stations 504 using one or more HE frames. During the HE control period, the HE STAs 504 may operate on a sub-channel smaller than the operating range of the HE AP 502. During the HE control period, legacy stations refrain from communicating. The legacy stations may need to receive the communication from the HE AP 502 to defer from communicating.

[0069] In accordance with some embodiments, during the TXOP the HE

STAs 504 may contend for the wireless medium with the legacy devices 506 being excluded from contending for the wireless medium during the master-sync transmission. In some embodiments the trigger frame may indicate an uplink (UL) UL-MU-MIMO and/or UL OF DMA. TXOP. In some embodiments, the trigger frame mav include a DL UL-MU-MIMO and/or DL OFDMA with a schedule indicated in a preamble portion of trigger frame.

[0070] In some embodiments, the multiple-access technique used during the HE TXOP may be a scheduled OFDMA technique, although this is not a requirement. In some embodiments, the multiple access technique may be a time-division multiple access (TDMA) technique or a frequency division multiple access (FDMA) technique. In some embodiments, the multiple access technique may be a space-division multiple access (SDMA) technique. In some embodiments, the multiple access technique may be a Code division multiple access (CDMA).

[0071] The HE AP 502 may also communicate with legacy stations 506 and/or HE stations 504 in accordance with legacy IEEE 802.1 1 communication techniques. In some embodiments, the HE AP 502 may also be configurable to communicate with HE stations 504 outside the HE TXOP in accordance with legacy IEEE 802.1 1 communication techniques, although this is not a requirement.

[0072] In some embodiments 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.

[0073] In some embodiments, the HE station 504 and/or HE AP 502 may be configured to operate in accordance with IEEE 802.1 lmc. In example embodiments, the radio architecture of FIG. I is configured to implement the HE station 504 and/or the HE AP 502. In example embodiments, the front-end module circuitry of FIG. 2 is configured to implement the HE station 504 and/or the HE AP 502. In example embodiments, the radio IC circuitry of FIG. 3 is configured to implement the HE station 504 and/or the HE AP 502. In example embodiments, the base-band processing circuitry of FIG , 4 is configured to implement the HE station 504 and/or the HE AP 502.

[0074] In example embodiments, 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.

[0075] In example embodiments, 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- 21 ,

[0076] In example embodiments, 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 -21 . In example embodiments, 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. 1-21. The term Wi-Fi may refer to one or more of the IEEE 802.11

communication standards. AP and STA may refer to HE access point 502 and/or HE station 504 as well as legacy devices 506.

[0077] In some embodiments, a HE AP STA may refer to a HE AP 502 and a HE ST As 504 that is operating a HE APs 502. In some embodiments, 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. In some embodiments, HE STA 504 may be referred to as either a HE AP STA or a HE non-AP.

[0078] 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. In alternative embodiments, the machine 600 may operate as a standalone device or may be connected (e.g., networked) to other machines. In a networked deployment, the machine 600 may operate in the capacity of a server machine, a client machine, or both in server-client network environments. In an example, the machine 600 may act as a peer machine in peer-to-peer (P2P) (or other distributed) network environment. 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. Further, while only a single machine is illustrated, the term "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.

[0079] Machine (e.g., computer system) 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,

[0080] Specific examples of main memory 604 include Random Access

Memory (RAM), and semiconductor memory devices, which may include, in some embodiments, storage locations in semiconductors such as registers.

Specific examples of 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.

[0081] The machine 600 may further include a display device 610, an input device 612 (e.g., a keyboard), and a user interface (UT) navigation device 614 (e.g., a mouse). In an example, 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. 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.). In some embodiments the processor 602 and/or instructions 624 may comprise processing circuitry and/or transceiver circuitry. [0082] The storage device 616 may include a machine readable medium

622 on which is stored one or more sets of data structures or instructions 624 (e.g., software) embodying or utilized by any one or more of the techniques or functions described herein. The instructions 624 may also reside, completely or at least partially, within the main memory 604, within static memory 606, or within the hardware processor 602 during execution thereof by the machine 600. In an example, one or any combination of the hardware processor 602, the main memory 604, the static memory 606, or the storage device 616 may constitute machine readable media.

[0083] Specific examples of 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.

[0084] While the 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.

[0085] 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. In some embodiments, the apparatus may include a pin or other means to receive power. In some embodiments, the apparatus may include power conditioning hardware. [0086] The term "machine readable medium" may include any medium that is capable of storing, encoding, or carrying instructions for execution by the machine 600 and that cause the machine 600 to perform any one or more of the techniques of the present disclosure, or that is capable of storing, encoding or carrying data structures used by or associated with such instructions. Non- limiting machine readable medium examples may include solid-state memories, and optical and magnetic media. Specific examples of machine readable media may include: 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. In some examples, machine readable media may include non-transitory machine readable media. In some examples, machine readable media may include machine readable media that is not a transitory propagating signal.

[0087] 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 (HDP), hypertext transfer protocol (HTTP), etc.). Example communication networks may include a local area network (LAN), a wide area network (WAN), a packet data network (e.g., the Internet), mobile telephone networks (e.g., cellular networks), Plain Old Telephone (POTS) networks, and wireless data networks (e.g., Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards known as Wi-Fi®, IEEE 802.16 family of standards known as WiMax®), IEEE 802.15.4 family of standards, a Long Term Evolution (LTE) family of standards, a Universal Mobile Telecommunications System (UMTS) family of standards, peer-to-peer (P2P) networks, among others.

[0088] In an example, 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. In an example, 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 (MB/10), or multiple-input single-output (MISO) techniques. In some examples, the network interface device 620 may wirelessly communicate using Multiple User MIMO techniques. The term "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,

[0089] 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. In an example, circuits may be arranged (e.g., internally or with respect to external entities such as other circuits) in a specified manner as a module. In an example, 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. In an example, the software may reside on a machine readable medium. In an example, the software, when executed by the underlying hardware of the module, causes the hard ware to perform the specified operations.

[0090] Accordingly, the term "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. Considering examples in which modules are temporarily configured, each of the modules need not be instantiated at any one moment in time. For example, where 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. [0091] 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 n on -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.

[0092] FIG. 7 illustrates a block diagram of an example wireless device

700 upon which any one or more of the techniques (e.g., methodologies or operations) discussed herein may perform. The wireless device 700 may be a HE device. The wireless device 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,

[0093] 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. As an example, 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. As another example, 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.

[0094] Accordingly, 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. In addition, some of the described functionality related to transmission and reception of signals may be performed by a combination that may include one, any or ail 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.

[0095] The antennas 712 (some embodiments may include only one antenna) 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. In some multiple-input multiple-output (ΜΓΜΟ) embodiments, the antennas 7 2 may be effectively separated to take advantage of spatial diversity and the different channel characteristics that may result.

[0096] 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. Moreover, although 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.

[0097] In some embodiments, the wireless device 700 may be a mobile device as described in conjunction with FIG. 6. In some embodiments 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, 1 ), In some embodiments, 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.) Although 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. For example, 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. In some embodiments, the functional elements may refer to one or more processes operating on one or more processing elements.

[0098] In some embodiments, 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., FIE AP 502 and/or HE ST A 504), in some embodiments. 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.

[0099] In some embodiments, 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).

[00100] The physical (PHY) circuitry 704 may be arranged to transmit signals in accordance with one or more communication standards described herein. For example, 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. In some embodiments, 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 puipose 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.

[00101] In mm Wave technology, 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. To accommodate the directionality, 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 .

[00102] FIGS. 8-11 as described in conjunction with one another. FIG. 8 illustrates a method 800 of addressing for short feedback report, in accordance with some embodiments. Illustrated in FIG. 8 is time 802 and transmitter 804 along a horizontal axis, frequency 806 along a vertical axis, and operations 850 along the top.

[00103] 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, 160+160 MHz, or 320 MHz. The channels may include one or more subcarriers or tones. 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. X .

[00104] The method 800 begins at operation 852 with the HE AP 502 acquiring the wireless medium. For example, the HE AP 502 may perform a contention based method (which may include a clear channel assessment and backoff) to acquire access to the wireless medium,

[00105] The method 800 continues at operation 854 with the HE AP 502 transmitting a trigger frame (TF) 808, which may be a TF with a type null data packet (NDP) feedback report poll (NFRP)(NFRP TF), in accordance with some embodiments. The NFRP TF 808 may include one or more of a feedback type field 830 (e.g., feedback type field 1406), user information fields 832 (e.g.. 1212), a bandwidth (BW) field 834 (e.g., BW 1310), multiplying flag field 1412, and common information 838 (e.g., common information 1210 and 1300).

[00106] The feedback type field 830, user information fields 832, a BW field 834, multiplying flag field 1412, and common information field 838 may be the same or similar as disclosed in conj unction with FIGS. 10 through 19.

[00107] 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,

[00108] The L-STF 902 may be a legacy field of duration 8 μ8 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 as 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 3 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 _,us 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.

[00109] 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 PPDLT 900, and/or other information regarding the HE TB NDP PPDU 900.

[00110] The HE-LTF 914 may be 2 HE-LTF symbols with a duration of 16 per symbol using a 4x symbol duration. 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. [00111] FIG. 10 illustrates a HE station 504 in accordance with some embodiments. Illustrated in FIG. 10 is a FRP TF 808, HE station 504, RU tone set 1714, and feedback 1716. The NFRP TF 808 may be the same or similar as NFRP TF 808 of FIG. 8. The feedback type field 830 (e.g., 1406, 1506, 1606, 1706, and/or 1906) may indicate a type of feedback that is being polled. For example, 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.

[00112] The user information fields 832 (e.g., 1212, 1400, 1500, 1600, 1700, 1800, and/or 1900) may indicate ranges of AID s that are solicited for response to the trigger frame for NDP feedback report poll. The ranges of AIDs may be determined based on information that is available in the common information field 838 and user information fields 832. The BW 834 (e.g., 1310) may indicate a BW for the responses to the NFRP TF 808. The multiplexing field 836 (e.g., 1412, 1512, 1612, 1712, and/or 1912) may indicate a number of HE STAs 504 that share a set of tones in time by use of P matrix. The common information field 838 (1210, 1300, 1616, and/or 1716) may include information (e.g., 1616 and/or 1716) that may be used to determine the ranges of AIDs.

[00113] 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, a RU tone set table 1020, and a starting STS number 1022. 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. In some embodiments, the AID 1012 may be a MAC address of the HE station 504 or another address of the HE station 504.

[00114] The feedback determiner 1014 determines the feedback 1026 in response to the NFRP TF 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 of the HE station 504 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.

[00115] 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 user information fields 832, the BW field 834, and/or common information field 838. For example, Equations 2, 5, 7, 9, 11, and/or 13 may be used to determine the RU Tone Set Index 1018 and Equations 3, 6, 8, 10, 12, and/or 14 may be used to determine the Starting STS number 1022. RU Tone Set Index 1018 and Starting STS number 1022 may be determined in a different way based on one or more of the fields of the NFRP TF 808, in accordance with some embodiments.

[00116] As an example, if the value of the starting AID 832 is 100 and the value of AID 1012 is 1 10, then the value of the RU tone set index 1018 may be 10 (or 9 or 11), in accordance with some embodiments.

[00117] The resource allocation determiner 1010 may then determine the

RU tone set 1024 based on one or more of the RU tone set index 1018, RU tone set table 1020, the value of the BW field 834, and the Starting STS Num 1022. The RU tone set table 1020 may be a table that indexed by the RU tone set index 1018 and the BW field 834. The Starting STS Num 1022 may indicate which spatial stream to use, e.g., a value of a P-matrix. The RU tone set table 1020 may be a table such as Table 28-28 of IEEE P802.1 lax/D2.2, February 2018. In some embodiments, the RU tone set table 1020 may be an implicit mapping between RU tone sets 1024 and the RU tone set index 1018 and, in some embodiments, the BW field 834. For example, RU tone sets 1024 may be numbered from a top left to a bottom right according to a diagram of the RU tone sets 1024. Other mappings are possible so that a RU tone set index 1018 may be used to determine an RU tone set 1024.

[00118] The RU tone set 1024 comprises a number of subcarrier indices spread across one or more 20 MHz channels. In accordance with some embodiments, if the value of the BW field 834 indicates a 40 MHz channel for the response, then 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. In 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 multiplexing field 836. In some embodiments, 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.

[00119] 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.

[00120] FIG. 11 illustrates a HE access point (AP) 502 in accordance with some embodiments. The HE AP 502 may include TF generator 1 102, HE-LTF sequence 1104, prohibited tones 1106, associated HE stations AIDS 1108, feedback determiner 1110, RU tone set table 11 12, and RU tone set index to AID determiner 11 4.

[00121] 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 1 102 may determine ranges of AIDs from the associated HE stations AIDS 1 108 that the HE AP 502 will address with the TF for NDP feedback 1002.

[00122] The TF generator 1102 sets the fields for the user information fields 832, multiplexing field 836, common information field 838, BW field 834, and feedback type 830. The TF generator 1 102 may determine the value of the BW field 834 and the value of the multiplexing field 836 to accommodate the number of HE stations 504 that are solicited to respond. 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 102 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.

[00123] The TF generator 1 02 may determine the value of the feedback type 830, e.g., resource request. The prohibited tones 1 106 may be tones or subcarriers that cannot be assigned to HE stations 504 when a 20 MHz operating HE station 504 i s the receiver of a 40 MHz, 80 Ml !/, 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.

[00124] The RU tone set index to AID determiner 1114 may be configured to determine the feedback from HE stations 1 116, For example, the HE AP 502 may receive the feedback (e.g., DP feedback 809, 810, 811, 900, 1116) 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 embodiments. The RU tone set index to AID determiner 1 1 14 may determine based on the RU tone set table 1112, prohibited tones 1 106, and ! II- ··[. !^'!· 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 one or more of the user information fields 832, BW 834, multiplexing field 836, and RU tone set table 1112. In some embodiments, the RU tone set 1024 may comprise a first set of subcarriers or tones and a second set of subcarriers or tones. If the HE station 504 transmits on the first set of subcarriers 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 subcarriers or tones, then it indicates a second response to the feedback type 830. In some embodiments, there may be more than 2 sets of subcarriers or tones of the RU tone set 1024 to indicate more than 2 responses to the feedback type 830.

[00125] Returning to operation 854 of FIG. 8, the HE stations 504. 1 through 504.N may receive the NFRP TF 808 and as described in conjunction with FIG. 10 determine if their AID 1012 is indicated in the NFRP TF 808 and, if their AID 1012 is indicated, determine their RU tone set 1024 and determine the feedback 1026. The NFRP TF 808 may be transmitted on a 20 MHz, 40 MHz, 80 MHz, 80+80 MHz, 160 MHz, or on multiple 20 MHz channels,

[00126] The method 800 continues at operation 856 with the HE stations 504.1 through 504.N waiting a duration before transmitting. The period of time may be a short interframe space (SIFS), in accordance with some embodiments.

[00127] The method 800 continues at operation 858 with the HE stations 504.1 through 5G4.N transmitting NDP feedback 809, 810, and 811. For example, the NDP feedback 809, 810, 81 1, may be a HE TB NDP PPDU 900 as described in conjunction with FIG. 9.

[00128] Each HE station 504.1 through 504.N transmits NDP feedback.

The NDP feedback 809 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 809 may be ( -S IT 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.

[00129] For example, 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 subcarriers or tones 810 that correspond to the RU tone set 1024. In some embodiments, the HE stations 504.1 through 50 N may determine what to transmit on the subcarriers 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 81.0.1 , 810.8, 810.240. To determine what to transmit on 810.1, the HE station 504.1 would determine whether the subcarrier for the HE-LTF sequence (e.g., as defined in the IEEE 802. 1 l ax 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 , and a -1 indicates a negative voltage to be transmitted on the subcarrier 810.1.

[00130] 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. In some embodiments, 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 I, and transmitting on a second set of RU tone set 1024 may indicate a 0. The HE AP 502 may receive the DP feedback 809, 810, and 811. The NDP feedback 811 may be null . In some embodiments, NDP feedback 81 1 may be one or more fields of the TB NDP PPDU 900. In some embodiments, the NDP feedback 809, 810, 811 may comprise only 810. In some embodiments, the NDP feedback 810 may include more than one HE-LTF.

[00131] 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.

[00132] The HE AP 502 made generate (and encode) a trigger frame 812 for UL transmissions based on the NDP feedback 809, 810, 811. 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.

[00133] 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.

[00134] 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. For example, the UL responses 814 may be TB PPDUs with a data portion that comprises data for the HE AP 502 to process. [00135] The method 800 continues at operation 866 with the HE stations

504 transmitting the UL responses 814. The HE AP 502 may decode the UL responses 814 and may transmit acknowledgments to the UL responses 814, In some embodiments, the trigger frame 812 may include downlink (DL) data for one or more of the HE stations 504, 1 through 504.N. One or more of the operations of method 800 may be optional. Additionally, method 800 may include one or more additional operations.

[00136] FIG. 12 illustrates a trigger frame 1200 in accordance with some embodiments. The trigger frame 1200 may include a frame control field 1202, a duration field 1204, receive address (RA) field 1206, transmitter address (TA) field 1208, a common information field 1210, user information fields 1212, padding field 1214, and frame control sequence (FCS) field 1216,

[00137] The frame control field 1202 may include information relating to the type of the trigger frame 1200. For example, the frame control fi eld 1202 may include a protocol version that indicates a protocol version of a media access control (MAC) portion of the trigger frame 1200. In some embodiments, the frame control field 1202 is 2 octets. In some embodiments, the frame control field 1206 is a different number of octets.

[00138] The duration field 1204 may be set to an estimated time for one or more response frames to the trigger frame 1200, which may include additional frames from the transmitter of the trigger frame 1200. The duration field 1204 may include information regarding how long wireless devices not identified in the trigger frame 1200 should set their network allocation vectors (not illustrated). The duration field 1204 may include a duration of a transmission opportunity. In some embodiments, the duration field 1204 is 2 octets. In some embodiments, the duration field 1204 is a different number of octets.

[00139] The RA field 1206 may be an address of the recipient HE station

504 or recipient HE AP 502. If the trigger frame 1200 is addressed to more than one HE station 504 and/or HE AP 502, then the RA field 1206 may be a broadcast address. In some embodiments, different addresses may be used for

RA field 1206, e.g., a MAC address of the group of HE stations 504 and/or HE

APs 502. In some embodiments, the RA field 1206 is 6 octets. In some embodiments, the RA field 1206 is a different number of octets. If the trigger frame 1200 is a NFRP trigger frame 1200, then the RA field 1206 may be set to a broadcast address.

[00140] The TA field 1208 may be the address of the STA (e.g. HE AP 502 that is transmitting the trigger frame 1200). In some embodiments, the TA field 1208 is the value of a BSS identification (!D)(BSSID)(not illustrated) when the trigger frame 1200 is addressed to STAs from at least two different BSS.

[00141] The common information field 1210 may include information that is common to two or more the STAs the trigger frame 1200 is for. An example common information field 1210 is 1300 of FIG. 13, 1616 of FIG. 16, and 1716 of FIG , 17.

[00142] The user information field 1212 may be one or more fields (e.g.,

1212.1 through 1212. N) that are particular for a STA (e.g., HE station 504 and/or HE AP 502 ). Examples of user information fields 1212 may be 1400 (FIG. 14), 1500 (FIG. 15), 1600 (FIG. 16), 1700 (FIG. 17), 1800 (FIG. 18), and 1900 (FIG. 1900). In some embodiments, there are no user information fields 1212.

[00143] The padding field 1214 may include one or more octets for padding. The padding field 1214 may pad the trigger frame 1200 so that a length of the trigger frame 1200 matches the number of bits required to end on a physical-level symbol boundary. The number of octets of the padding field 1214 may be vari able to match the number of bits required to end on a phy ical -level symbol, or may be variable for other reasons.

[00144] The FCS field 1216 may be a checksum appended to the trigger frame 1200 that may be for detecting corruption of the trigger frame 1200. In some embodiments forward error correction information may be included in the FCS field 1216. One or more of the fields of the trigger frame 1200 may not be present, in accordance with some embodiments. In some embodiments, one or more additional fields may be included in the trigger frame 1200, As disclosed in conjunction with FIG. 13, there may be different types of trigger frames 1200, e.g., a NFRP TF.

[00145] FIG. 13 illustrates a common information field 1300 in accordance with some embodiments. The common information field 1300 may be the same or similar as common information field 1210. [00146] The common information field 1300 may include a trigger type field 1302, a length field 1304, a cascade information field 1306, a carrier sense (CS) required field 1308, a bandwidth (BW) field 1310, a guard interval (GI) and a long-training field (LTF) type field 1312, a MU-MIMQ LTF mode field 1314, a number of HE-LTF symbols field 1316, space-time block coding (STBC) field 1318, a low-density parity check (LDPC) extra symbols segment field 1320, AP transmit (TX) power field 1322, a packet extension field 1324, a spatial reuse field 1326, a Doppler field 1328, a HE-SIG-A reserved field 1330, a reserved field 1332, and a trigger dependent common information (INFO) field 1334. In some embodiments one or more of the fields of the common information field 1300 may not be present. In some embodiments one or more additional fields may be included in the common information field 1300.

[00147] The trigger type field 1302 may indicate a type of trigger frame.

For example, Table 1 indicates some trigger frame types, in accordance with some embodiments.

[00148] The length field 1304 may indicate the value of the L-SIG length field of a HE trigger-based PPDU that is the response to the trigger frame 1200, in accordance with some embodiments. The cascade information field 1306 may indicate if a subsequent trigger frame 1200 follows the current trigger frame

1200, in accordance with some embodiments. The carrier sense (CS) required field 1308 may indicate whether STAs identified in the user information fields 1212 are to perform energy detect (ED) and check a network allocation vector (NAV) prior to transmitting, in accordance with some embodiments.

[00149] The BW field 1310 indicates the bandwidth of a response frame in accordance with some embodiments. The GI and a LTF type field 1012 indicates the GI and HE-LTF type of the HE TB PPDU response in accordance with some embodiments.

[00150] The MU-MIMO LTF mode field 1314 indicates the LTF mode of the UL MU-MIMO HE TB PPDU response, in accordance with some embodiments. The number of HE-LTF symbols field 1316 indicates the number of HE-LTF symbols present in the HE TB PPDU that are in response to the trigger frame 1200, in accordance with some embodiments. The STBC field 1318 indicates the status of STBC encoding of the HE TB PPDU that is in response to the trigger frame 1200, in accordance with some embodiments.

[00151] The LDPC extra symbols segment field 1320 indicates the status of the LDPC extra symbol segment in accordance with some embodiments. The AP TX power field 1322 indicates the combined average power per 20 MHz bandwidth referenced to the antenna connector in accordance with some embodiments. The packet extension field 1324 indicates the packet extension duration of the HE TB PPDU that is the response to th/e trigger frame 1200.

[00152] The spatial reuse field 1326 indicates information related to whether spatial reuse is permitted. For example, the spatial reuse field 1326 indicates a value (20 MHz, 40 MHz, 80 MHz, 160 MHz) of the HE-SIG-A field of the HE TB PPDU that is in response to the trigger frame 1200. The Doppler field 1328 indicates a high Doppler mode of transmission. The HE-SIG-A reserved field 1330 indicates the values of the reserved bits in the HE-SIG-A2 subfield of the HE TB PPDU that is in response to the trigger frame 1200, in accordance with some embodiments. The reserved field 1332 may be a reserved field for future use, in accordance with some embodiments.

[00153] The trigger dependent common information field 1334 may be a common information field 334 for different trigger types 302. Fields for the NFRP TF may include 1616 and/or 1716. Additional fi elds may be pari of the common information field 1334 for the NFRP TF. In some embodiments, NFRP TF does not include the trigger dependent common information field 1034.

[00154] FIG. 14 illustrates addressing for short feedback 1400 in accordance with some embodiments. Illustrated in FIG. 14 is a starting AID field 1402, a reserved field 1404, a feedback type field 1406, a reserved field 1408, a target received signal strength indication (RSSI) field 1410, a

multiplexing flag field 1412, and bits 1414. In some embodiments, one or more of the fields 1402, 1404, 1406, 1408, 1410, 1412, for addressing for short feedback 1400 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields 1402, 1404, 1406, 1408, 1410, 1412, for addressing for short feedback 1400 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 1210). In some embodiments, there is only one user information field 1212 for trigger frame 1200 for all HE stations 504.

[00155] The bits 1414 may indicate an example number of bits of fields,

1402, 1404, 1406, 1408, 1410, and 1412. The starting AID field 1402 may indicate the first AID of a range of AIDs that are scheduled to respond to the trigger frame 1200, which may be of type NFRP. The total number of FIE STAs 504, NSTA, that are scheduled to respond to the NFRP trigger frame is given by:

[00156] Equation (1): NSTA = 18 X 2^bw X (multiplexing flag), where BW is the value of the BW field (e.g., 1310) and multiplexing flag is the value of the multiplexing flag field 1412. The number of HE-LTF s field 1316 indicates the number of HE-LTF symbols present in the NDP feedback report response and is set to 2 for 2 HE-LTF symbols, in accordance with some embodiments.

[00157] The target RSSI field 1406 may indicate a target received signal power for the response to the trigger frame 1200 from the HE STAs 504, e.g., NDP feedback 809, 810, 811. In some embodiments, the value of the target RSSI field 1406 may be in dBs.

[00158] The multiplexing flag field 1412 indicates the number of HE ST As 504 that are multiplexed with P-matrix codes on the same set of tones in the same RU in the frequency domain, where the value of the multiplexing flag field 1412 indicates the number minus 1. [00159] The feedback type field 1406 may indicate a type of feedback for the response to the trigger frame 1200. Table 2 is an example of feedback types. A value of 0 for the feedback type field 1406 may indicate that the response indicates whether the solicited HE station 504 is requesting a resource for transmitting UL data to the HE AP 502 that transmitted the NFRP trigger frame 1200.

[00160] Values of 1-15 of the feedback type field 1408 may be reserved for future use in accordance with some embodiments.

There may be more feedback types, in accordance with some embodiments. Moreover, some feedback types may indicate that a number or a value of a range of possible responses is to be transmitted.

[00162] A HE ST A 504 is scheduled to respond to the trigger frame 1200 if its AID 1012 is greater than or equal to the starting AID (value of starting AID field 1402) and less than the starting AID plus NSTA (determined as above).

[00163] In accordance with some embodiments, the following parameters are set as indicated. The NDP feedback report in response to the trigger frame 1200 sets the P S DU_LENGTH to 0, the REALLOCATION parameter to the maximum RU size for the BW, and the RU TONE SET INDEX is set by:

[00164] Equation (2): RUJTONE_SET_INDEX = (AID - starting AID) mod (18 x 2^B ). The NUM _. STS is set to 1. STARTING _STS_NUM is set by:

[00165] Equation (3): S ARTING S I^'S Nl M = floor of ((AID- starting

AID) 1 8 / 2^BW). The MCS parameter is set to 0.

[00166] The RU TONE SET INDEX may be used to determine a RU based on a RU tone set table (e.g., 1020) and a BW (e.g., 1310). The HE STA 504 determines the S ARTING STS NUM and RU TONE SET INDEX which may be used to determine 12 tones to transmit feedback, in accordance with some embodiments. The 12 tones are divided into two groups of 6 tones (a different number could be used). Transmitting energy on one set of 6 tones indicates a first feedback and transmitting energy on a second set of 6 tones iinnddiiccaatteess aa sseeccoonndd ffeeeeddbbaacckk.. TThhee eenneerrggyy iiss ttrraannssmmiitttteedd oonn aa ssppaattiiaall ssttrreeaamm iinn aaccccoorrddaannccee wwiitthh tthhee SSTTAARRTTIINNGG__SSTTSS__NNUUMM.. FFoorr eexxaammppllee,, eenneerrggyy oonn aa fifirrsstt sseett ooff 66 ttoonneess mmaayy iinnddiiccaattee aa rreessoouurrccee rreeqquueesstt aanndd eenneerrggyy oonn aa sseeccoonndd sseett ooff 66 ttoonneess mmaayy iinnddiiccaattee nnoo rreessoouurrccee rreeqquueesstt.. TThhee HHEE SSTTAA 550044 mmaayy ttrraannssmmiitt tthhee 66 ttoonneess iinn aaccccoorrddaannccee wwiitthh ttoonnee ggeenneerraattiioonn f foorr aa ccoorrrreessppoonnddiinngg 66 ttoonneess f foorr aa HHEE--LLTTFF ffoorr aa T TBB NNDDPP PPPPDDUU ((ee..gg..,, 990000)).. IInn ssoommee eemmbbooddiimmeennttss,, tthhee nnuummbbeerr ooff ttoonneess oorr tthhee nnuummbbeerr ooff sseettss ooff ttoonneess mmaayy bbee ddiiffffeerreenntt,,

[[0000116677]] FFIIGG.. 1155

11550000 iinn accordance with some embodiments. Illustrated in FIG. 15 is starting AID field 1502, ending AID field 1504, feedback type field 1506, blocked access field

1508, target RSSI field 1510, and multiplexing flag field 1512. One or more of the fiel ds of FIG. 15 may not be present or may be located in a different portion of the trigger frame 1200. Additionally, one or more additional fields may be present. In some embodiments, one or more of the fields 1502, 1504, 506, 1508, 1510, 1512, for addressing for short feedback 1500 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields 1502, 1504, 506, 1508, 1510, 1512, for addressing for short feedback 1500 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 121.0).

[00168] The starting AID field 1502 may indicate a starting AID. The ending AID field 1504 may indicate an ending AID, e.g., the ending AID field 1504 may be a last AID or may indicate an offset (e.g., starting AID + value of ending AID field 1504 to determine a last AID).

[00169] The feedback type field 1506 may be the same or similar to the feedback type field 1406 as described herein. The blocked access field 1508 may indicate whether the HE STAs 504 indicated by the starting AID field 1502 and ending AID field 1504 are blocked (e.g., a value of 1), i.e., are not supposed to respond to the trigger frame (e.g., 1200), or are supposed to respond (e.g., a value of 0) to the trigger frame (e.g., trigger frame 1200). In some embodiments, if a HE STA 504 is indicated as blocked by fields for addressing for short feedback 1500, then the HE STA 504 may remain blocked either for the one trigger frame (e.g., 1200) or for multiple trigger frames (e.g., 1200). For example, being blocked may indicate that the HE STA 504 is blocked until it is unblocked or for a fixed time or number of trigger frames.

[00170] The target RSSI field 1510 may be the same or similar to the target RSSI field 1410 as disclosed herein. The multiplexing flag field 1512 may be the same or similar as multiplexing flag field 1412 as disclosed herein.

[00171] In some embodiments, HE STAs 504 whose AID (e.g., 1012) falls within the range of values of the starting AID fi eld through the value of the ending AID field 1504 are being solicited to provide feedback. The range may include both the end points. The number of HE STAs 504 solicited may be given by:

[00172] Equation (4): AID Range(i) = Ending AID(i) - Starting AID(i)

+ 1, for i= 0, 1 , 2, .... K-l, where K may be the number of user information fields, e.g., user info fields 1212.1 through 1212.N. One or more of the fields 1502, 1504, 1506, 1508, 1510, 1512, for addressing for short feedback 1500 may be present in each user information field 1212.1 through 1212. N.

[00173] In some embodiments, with the blocked access field 1508, the AID_Range(i) would be counted towards the number of HE STAs 504 only if the value of the blocked access field 1508 indicated the HE STAs 504 were not blocked. Additionally, AID_Range(i) ^:=: Ending AID(i) - Starting AID(i) + 1 - any blocked AIDs from a field for addressing for short feedback 1500, e.g., that are part of the same trigger frame 1200. For a value of starting AID fi eld 1502 equal to the value of the ending AID field 1504, then only one HE STA 504 is addressed,

[00174] In accordance with some embodiments, the number of HE STAs 504 solicited that can be accommodated by the feedback resource (NSTA) may be given by∑_i=0jl∞Ji{th€ 3i«m¾er of HE STAS In AID_RANGE(i)) < N(STA), i.e., sum (for i=l to k of (the number of HE STAs in AID_RANGE(i))) < N(STA), where K is the number of sets of fields 1502, 1504, 1506, 1508, 1510, 1512 for addressing for short feedback 1500, K may indicate the number of user information fields 1212. In some embodiments, an RU for the HE STA 504 to respond with may be determined by: [00175] Equation (5): RU_TONE_SET_INDEX = modulo (AID -

StartingAID(i) + AID offset(i), 18 * 2^BW).

[00176] In some embodiments, a Starting__STS__NUM for the HE ST A

504 to respond with may be determined by:

[00177] Equation (6) Starting STS N JM - floor of (AID -

Starting AID(i) + AID__offset(i) / 18 * 2^BW), where AID is within the range of ceiling of (StartingAID(i), EndingAID(i)), and AID offset(i) ^:=

RU_TONE_SET_I DEX and starling S I^'S XL \ i may be used by the HE STA 504 to determine an RU for the HE STA 504 to use to respond to the trigger frame 1200 as described herein. In some embodiments, the HE STA 504 may use a different way to determine how to determine an RU to use to respond to the trigger frame 1200.

[00178] FIG. 16 illustrates addressing for short feedback 1600 in accordance with some embodiments. Illustrated in FIG. 16 is starting AID field 1602, AID Step field 1604, feedback type field 1606, blocked access field 1608, target RS SI field 1610, a multiplexing flag field 1612, and an AID Step Size field 1616. One or more of the fields of FIG. 16 may not be present or may be located in a different portion of the trigger frame 1200. Additionally, one or more additional fields may be present. In some embodiments, one or more of the fields 1602, 1604, 1606, 1608, 1610, 1612, 1616 for addressing for short feedback 1600 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields 1602, 1604, 1606, 1608, 1610, 1612, 1616 for addressing for short feedback 1600 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 1210). In some embodiments, one or more of fields 1602, 1604, 1606, 1608, 1610, 1612 are included in each user information field (e.g., 1212), and AID step size field 1616 is included in trigger dependent common information field (e.g., 1334). The AID step size field 1616 may indicate a value to be used by all HE STAs 504.

[00179] The starting AID field 1602 may indicate a starting AID. The

AID Step field 1604 may indicate a number of steps. The AID Step Size field 1616 may indicate a step size, e.g., the field may be 4 bits with a value indicated of 32. Other values may be indicated and a different number of bits may be used, e.g., 1 through 8 bits and values of 0 through 256. The AID Step Size field 1616 may enable fewer bits to be used for the AID Step field 1604. If the AID Step Size field 1616 has a value of 32, then one user information field 212 could solicit up to 2^Λ4*32 = 512 HE ST As 504, which enables soliciting 512 contiguous AIDs. If the AID Step Size fi eld 1616 has a value of 1, then the user information field 212 could solicit up to 2^A4* 1 or 16 HE STAs 504, in accordance with some embodiments. In some embodiments, the AID Step field 1604 and/or the AID Step Size field 1616 may include an implicit adjustment, e.g., add 100, subtract 100, multiple by 2, etc.

[00180] The number of HE STAs 504 that can be solicited in each user information field 1212.1 through 1212. N may be ATD_Range(i) = AID_Step(i) * AID Step Size, for i^:=:0, I , 2, . . . , K-l . One byte may be saved in comparison to addressing for short feedback 1 500, if the AID Step Size field 1616 is equal to 1, then one user information field 1212 could solicit up to 2^A4* 1 = 16 HE STAs 504.

[00181] The number of HE STAs 504 solicited by the trigger frame 1200 should not be larger than can be accommodated by the feedback resource ((NSTA),

Step (ø * AID_Step_5i∑e) < = NSTA.

[00182] The feedback type field 1606 may be the same or similar to the feedback type field 1406 as described herein. The blocked access field 1608 may indicate whether the HE STAs 504 indicated by the starting AID field 1602, AID step field 1604, and AID Step Size field 1616 are blocked (e.g., a value of 1), i.e., are not supposed to respond to the trigger frame (e.g., 1200), or are supposed to respond (e.g., a value of 0) to the trigger frame (e.g., trigger frame 1200). In some embodiments, if a HE STA 504 is indicated as blocked by fields for addressing for short feedback 1600, then the HE STA 504 may remain blocked either for the one trigger frame (e.g., 1200) or for multiple trigger frames (e.g., 1200). For example, being blocked may indicate that the HE STA 504 is blocked until explicated unblocked or for a fixed time or number of trigger frames. [00183] The target RSSI field 1610 may he the same or similar to the target RSSI field 1410 as disclosed herein. The multiplexing flag field 1612 may he the same or similar as multiplexing flag field 1612 as disclosed herein.

[00184] In some embodiments, HE ST As 504 whose AID (e.g., 1012) falls within the range of Starting AID field 1602 through Starting AID field 602 + (AID Step field 1604 * AID Step Size field 1616) is solicited for feedback, i.e., to respond to the trigger frame 1200. In some embodiments, the value of AID Step field 1604 is based only on the value of the AID Step field 1604. The AID range may include both the end points.

[00185] In some embodiments, with the blocked access field 1608, the AID Range(i) would be counted towards the number of HE STAs 504 only if the value of the blocked access field 1608 indicated the HE STAs 504 were not blocked. In some embodiments, an RU for the HE STA 504 to respond with may be determined by:

[00186] Equation (7): RU__TONE__SET__INDEX = modulo (AID -

StartingAID(i) + AID offset(i), 18 * 2^BW).

[00187] Equation (8) Starting_STS_NUM = floor of (AID -

Starting AID(i) + AID offset(i) / 18 * 2^BW), where AID is within the range of ceiling of (StartingAID(i), Starts ngAID(i)) + AID_Range(i)); AID_offset(i) ^:=:

= 0); and, AID Range(i) =

AID Step(i ) * A ID Siep Size

[00188] The RU_TO E_SET_INDEX and starting_STS_NUM may be used by the HE STA 504 to determine an RU for the HE STA 504 to use to respond to the trigger frame 1200 as described herein. In some embodiments, the HE STA 504 may use a different way to determine how to determine an RU to use to respond to the trigger frame 1200.

[00189] FIG. 17 illustrates addressing for short feedback 1700 in accordance with some embodiments. Illustrated in FIG. 17 is starting AID field 1702, reserved field 1704, feedback type field 1706, blocked access field 1708, target RSSI field 1710, a multiplexing flag field 1712, and an AID Range Size field 1716. One or more of the fields of FIG. 17 may not be present or may be located in a different portion of the trigger frame 1200. Additionally, one or more additional fields may be present. In some embodiments, one or more of the fields 1702, 1704, 1706, 1708, 1710, 1712, 1714, for addressing for short feedback 1700 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields for addressing for short feedback 1700 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 1210). In some

embodiments, one or more of fields 1702 through 1712 are included in each user information field (e.g., 1212), and AID Range size field 1716 is included in trigger dependent common information field (e.g., 1334). The AID Range Size field 1716 may indicate a value to be used by all HE STAs 504, The reserve field 1704 may be reserved for future or a different use.

[00190] The starting AID field 1702 may indicate a starting AID. The

AID Range Size field 1716 may indicate a range to be added to the starting AID field 1702. The HE STAs 504 whose AID (e.g., 1012) falls within the range of Starting AID field 1716 through Starting AID field 1716 + AID Range Size field 1716 are solicited by the trigger frame (e.g., 1200). The number of HE STAs 504 that can be solicited by one user information field 1212 is equal to the AID Range Size field 1716 (or AID Range Size field 1716 plus 1), in accordance with some embodiments.

[00191] Addressing for short feedback 1700 may require fewer bits than addressing for short feedback 1500 or addressing for short feedback 1600. For AID Range Size field 1716 equal to zero only one HE STA 504 is addressed in the user information field 1212. In some embodiments, the AID Range Size field 1716 may include an implicit adjustment, e.g., add 100, subtract 100, multiple by 2, etc.

[00192] The number of HE STAs 504 solicited by the trigger frame 1200 should not be larger than can be accommodated by the feedback resource ((NSTA), i.e., AID Range Size * K < = NSTA, where K is the number of user information fields 1212 (e.g., fields 1 702 through 1712 for addressing for short feedback 1700).

[00193] The feedback type field 1706 may be the same or similar to the feedback type field 1406 as described herein. The blocked access field 1708 may indicate whether the HE STAs 504 indicated by the starting AID field 1702 and AID Range Size 1716 are blocked (e.g., a value of 1 ), i.e., are not supposed to respond to the trigger frame (e.g., 1200), or are supposed to respond (e.g., a value of 0) to the trigger frame (e.g., trigger frame 1200). In some embodiments, if a HE STA 504 is indicated as blocked by fields for addressing for short feedback 1700, then the HE STA 504 may remain blocked either for the one trigger frame (e.g., 1200) or for multiple trigger frames (e.g., 1200). For example, being blocked may indicate that the HE STA 504 is blocked until explicated unblocked or for a fixed time or number of trigger frames,

[00194] The target RSSI field 1710 may be the same or similar to the target RSSI field 1410 as disclosed herein. The multiplexing flag field 1712 may be the same or similar as multiplexing flag field 1412 as disclosed herein.

[00195] In some embodiments, HE STAs 504 whose AID (e.g., 1012) falls within the range of Starting AID field 1602 through Starting AID field 1602 AID Range Size field 1716 is solicited for feedback, i.e., to respond to the trigger frame 1200. In some embodiments, the value of the Starting AID field 1702 + AID Range Size field 1716 may be adjusted. For example, AID Range Size field 1716 may be multiplied by a number, a number added to AID Range Size field 1716, etc. As another example, the result of Starting AID field 1702 + AID Range Size field 1716 may be adjusted, e.g., multiplied by a number or a number added to the result. The range may include both the end points.

[00196] In some embodiments, with the blocked access field 1708, the AID__Range(i) would be counted towards the number of HE STAs 504 only if the value of the blocked access field 1608 indicated the HE STAs 504 were not blocked. In some embodiments, an RU for the HE STA 504 to respond with may be determined by:

StartingAID(i) + AID_offset(i) / 18 * 2^BW), where AID is within the range of ceiling of (StartingAID(i), StartingAID(i)) * AID Range(i)); and, AID offset(i) = AID__Range(i) * i. [00200] The RU ΤΟΧκ Sf W Di .X and starting_STS_NUM may be used by the HE STA 504 to determine an RU for the HE STA 504 to use to respond to the trigger frame 1200 as described herein . In some embodiments, the HE STA 504 may use a different way to determine how to determine an RU to use to respond to the trigger frame 1200.

[00201] In some embodiments, addressing for short feedback 1500, 1600, and/or 1700 may provide a means of addressing that allows for addressing noncontiguous AIDs and/or individual HE STAs 504. In some embodiments, addressing for short feedback 1500, 1600, and/or 1700 may provide a means for grouping HE STAs 504 by providing the ability to address different ranges of AIDs. In some embodiments, the HE STAs 504 may be grouped according to a timing budget and/or priority. In some embodiments, fields for addressing for short feedback 1500, 1600, and/or 1700 may provide a means for creating one or more pools of HE STAs 504 based on their AIDs.

[00202] FIG. 18 illustrates addressing for short feedback 1800 in

accordance with some embodiments. Illustrated in FIG. 18 is AID field 1802.1 through AID field 1 802. N. One or more additional fields may be present. In some embodiments, one or more of the fields 1802.1 through 1802.N for addressing for short feedback 1 800 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields for addressing for short feedback 1800 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 1210). In some embodiments, AID fields 1802 are included in a user information field (e.g., 1212), e.g., one or more AID field 1 802 per user information field 1202.

[00203] The AID field 1802 may indicate a HE STA 504. In some embodiments, the AID field 1 802 i s a MAC address of the HE STA 504 or another address of the HE STA 504 that may be used to address the HE STA 504.

[00204] In some embodiments, an RU for the HE STA 504 to respond with may be determined based on the position of the AID field 1802 within the list of AID field 1802.1 through AID field 1802.N. For example, there may be a predetermined order of RU such as RU tone set table 1020. In some

embodiments, the RU_TONE_SET_I^"NDEX may be set by: [00205] Equati on ( 11 ) : RU_TONE_SET_I DEX = modulo (N, 18 *

2^B¾'). In some embodiments, RU_TONE_ SET INDEX may be set to a value based on the position of the AID 1802. Starting_STS_NUM may be set by:

[00206] Equation (12) Starting_STS_NUM = floor of (N / 18 * 2^BW).

[00207] RU_TONE_SET_INDEX and Starting _, STS__NUM may be used by the HE STA 504 to determine an RU for the HE STA 504 to use to respond to the FRP TF 1200 as described herein. In some embodiments, the HE STA 504 may use a different way to determine how to determine an RU to use to respond to the trigger frame 1200.

[00208] Fields for addressing for short feedback 1800 may include one or more of the fields indicated in FIGS. 14-17, e.g., feedback type 1406, target RSSI 1410, and multiplexing flag 1412.

[00209] In some embodiments, the RUs may include RUs for a code, time, space, and/or frequency domain. The order of the AID within the AIDs 1802.1 through 1802.N may determine which RU is selected based on a predetermined order.

[00210] FIG. 19 illustrates addressing for short feedback 1900 in accordance with some embodiments. Illustrated in FIG. 19 is starting AID field 1902, ending AID field 1904, feedback type field 1906, bit map field 1908, target RSSI field 1910, and multiplexing flag field 1512. One or more of the fields of FIG. 19 may not be present or may be located in a different portion of the trigger frame 1200. Additionally, one or more additional fields may be present. In som e embodi ments, one or more of the fields 1902 through 1912 for addressing for short feedback 1900 are part of a trigger frame, e.g., trigger frame 1200. For example, one or more fields for addressing for short feedback 1900 may be part of a trigger dependent common information field (e.g., 1334), a user information field (e.g., 1212), and/or common information (e.g., 1210).

[00211] The starting AID field 1902 may indicate a starting AID. The ending AID field 1904 may indicate an ending AID, e.g., the ending AID field 1904 may be a last AID or may indicate an offset (e.g., starting AID + value of ending AID field 1904 to determine a last AID).

[00212] The feedback type field 1906 may be the same or similar to the feedback type field 1406 as described herein. The target RSSI field 1910 may be the same or similar to the target RSSI field 1410 as disclosed herein. The multiplexing flag field 1912 may be the same or similar as multiplexing flag field 1412 as disclosed herein,

[00213] In some embodiments, HE STAs 504 whose AID (e.g., 1012) falls within the range of value of the starting AID fi eld 1902 through the value of the ending AID field 1904 are candidates for being solicited to provide feedback. The range may include both the end points. The bit map field 1908 may include a bit for AID between the starting AID field 1902 and the ending AID field 1904. A corresponding bit of the bit map field 1908 indicates if the HE STA 504 with the corresponding AID is solicited to provide feedback. In some embodiments, the ending AID field 1904 is not present and the number candidate AIDs, is a fixed number of the number of bits in the bit map 1908 with the candidate AIDs being starting AID field 1902 through starting AID field 1902 plus the number of bits in the bit map fi eld 1908 minus 1.

[00214] The number of HE STAs 504 solicited may be given by the following equation AID Range(i) = number of bits set of the Bit Map field 1908 for i= 0, 1 , 2, ... , K-l , where K may be the number of user information fields, e.g., user info fields 1212. 1 through 1212.N, or the number of Bit Map fields 1908. In some embodiments, the Ending AID 1904 may indicate an offset as described in conjunction with FIGS. 16 and 17. In some embodiments, the Bit Map field 1908 may have size that is based on the number of AIDs between Starting Aid field 1902 and Ending Aid field 1904.

[00215] In some embodiments, with a blocked access field (e.g., 1508), the AID_Range(i) would be counted towards the number of HE STAs 504 only if the value of the blocked access field 1508 indicated the HE STAs 504 were not blocked.

[00216] In accordance with some embodiments, the number of HE STAs

504 solicited that can be accommodated by the feedback resource (NSTA) ma be given

¾¾mier of HE STAS in AID_RANGE (ø} < N(STA), i.e., sum (for i=l to k of (the number of HE STAs in AID__ RANGE(i)) <

N(STA), where in some embodiments, the HE STAs 504 that are blocked may have to accounted for. In some embodiments, an RU for the HE STA 504 to respond with may be determined by:

[00217] Equation (13): RU_TO E_SET_INDEX = modulo (AID -

StartingAID(i) + AID__offset(i), 18 * 2^BW).

[00218] In some embodiments, a Starting STS NUM for the HE STA

504 to respond with may be determined by:

[00219] Equation (14) Starting_STS_NUM = floor of (AID -

StariingAID(i) + AID_offset(i) /' 18 * 2^B¾'), where AID is within the range of ceiling of (StartingAID(i), EndingAID(i)), and AID__offset(i) =

⁼ °)> ^and where the

AIDRAN GE( - l ) is the number of bits set for Bit Map field (i). The

RU_TONE_SET_INDEX and starting ST S _NUM may be used by the HE STA 504 to determine an RU for the HE STA 504 to use to respond to the trigger frame 1200 as described herein. In some embodiments, the HE STA 504 may use a different way to determine how to determine an RU to use to respond to the trigger frame 1200.

[00220] In some embodiments, there may only be a Bit Map field 1908 that indicates which HE STAs 504 are to respond. The Bit Map field 1908 may^¬ be mapped to a portion of a AID range.

[00221] FIG. 20 illustrates a method of addressing for short feedback 2000 in accordance with some embodiments. The method 2000 begins with operation 2002 start. The method 2000 continues at operation 2004 with decoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF comprising user information fields, wherein the user information fields indicate ranges of association identifications (AIDs), and wherein the TF further comprises a feedback type field, the TF received from an HE access point. For example, HE stations 504.1 through 504.N may decode trigger frame 808 of FIG 8,

[00222] The method 2000 continues at operation 2006 with determining whether the TF indicates that the HE station is scheduled for an NDP feedback report response based on the range of AIDs indicated by the user information fields. For example, referring to FIG. 8, HE stations 504.1 through 504.N may determine whether the TF indicates the HE station 504 is scheduled for an NDP feedback report response (e.g., 809, 810, 81 1).

[00223] The method 2000 continues at operation 2008 with is the HE station scheduled for an NDP feedback report response. The method 2000 returns to operation 2002 with start if the HE station i s not scheduled. If the HE station is scheduled, the method 2000 continues at operation 2010 with determining a resource unit (RU) tone set index based on the TF for the NDP feedback report poll . For example, HE stations 504.1 through 504. N determine a RU tone set index as described in conjunction with FIGS. 8 and 10.

[00224] The method 2000 continues at operation 2010 with determining a response to a feedback type indicated in the feedback type field. For example, HE stations 504. 1 through 504.N determine a response to the trigger frame 808 as described in conjunction with FIGS. 8 and 10.

[00225] The method 2000 continues at operation 2012 with determining a RU tone set based on the RU tone set index and the response. For example, HE stations 504.1 through 504.N determine RU tone set 810 as described in conjunction with FIGS, 8 and 10.

[00226] The method 2000 continues at operation 2014 with generating signaling to cause the HE station to transmit (e.g., energy) on the tones of the RU tone set. For example, HE stations 504.1 through 50 transmit energy on RU tone sets 810 as described in conjunction with FIGS. 8-10.

[00227] The method 2000 may be performed by an apparatus of HE station 504, a HE station 504, a HE access point, or an apparatus of a HE access point, in accordance with some embodiments. One or more of the operations may be omitted. The method 2000 may include one or more additional operations. In some embodiments, the operations may be in a different order.

[00228] FIG. 21 illustrates a method of addressing for short feedback 2100 in accordance with some embodiments. The method 2100 may begin at operation 2102 with encoding a TF for NDP feedback report poll, the TF comprising user information fields, where the user information fields indicate ranges of AIDs, the TF indicating RU tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response. For example, HE access point 502 of FIG. 8 may encode trigger frame 808 as disclosed in conjunction with FIGS. 8 and 11.

[00229] The method 2100 may continue at operation 2104 with configuring the HE access point to transmit the TF to the HE station. For example, an apparatus of the HE access point 502 may generate signal ing to cause the HE access point 502 to transmit the trigger frame 808 as disclosed in conjunction with FIGS. 8 and 1 1.

[00230] The method 2100 may continue at operation 2106 with decoding the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF. For example, HE access point 502 may decode the NDP feedback 809, 810, and 811 as disclosed in conjunction with FIGS. 8 and 11.

[00231] The method 2100 may be performed by an apparatus of HE station 504, a HE station 504, a HE access point, or an apparatus of a HE access point, in accordance with some embodiments. One or more of the operations may be omitted. The method 2100 may include one or more additional operations. In some embodiments, the operations may be in a different order.

[00232] The following examples pertain to further embodiments. In

Example 1, the subject matter of Example undefined optionally includes, where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

[00233] In Example 2, the subject matter of Example 1 optionally includes where the user information fields further comprise a block access field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields, and a value of the block access field for the one user information field indicates blocked. [00234] In Example 3, the subject matter of any one or more of Examples

1-2 optionally include where the user information fields further comprise a bit map field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields and a corresponding bit of the bit map fi eld for the one user information field indicates scheduled.

[00235] In Example 4, the subject matter of Example undefined optionally includes where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID step field times a value of the AID step size field for one of the user information fields.

[00236] In Example 5, the subject matter of Example 4 optionally includes where the user information fields further comprise a block access field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the AID step field times the value of the AID step size field, and a value of the block access field for the one user information field indicates blocked .

[00237] In Example 6, the subject matter of any one or more of Examples

4-5 optionally include where the user information fields further comprise a bit map field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the

AID step field times the value of the AID step size field, and a corresponding bit of the bit map field for the one user information field indicates scheduled. [00238] In Example 7, the subject matter of Example undefined optionally includes , where the user information fields comprise a starting AID field to indicate the ranges of AIDs, and the TF further includes an AID range size field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size fi eld for one of the user information fields.

[00239] In Example 8, the subject matter of Example 7 optionally includes where the user information fields further comprise a block access field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is not scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field, and a value of the block access field for the one user information field indicates blocked.

[00240] In Example 9, the subject matter of any one or more of Examples

7-8 optionally include where the user information fields further comprise a bit map field, and where the processing circuitry is further configured to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field, and a corresponding bit of the bit map field for the one user information field indicates scheduled.

[00241] In Example 10, the subject matter of Example undefined optionally includes where the processing circuitry is further configured to: map tones of the RU tone set to a corresponding tone of a HE long-training field (HE- LTF) sequence, and where generate signaling further includes 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.

[00242] In Example 11, the subject matter of Example 10 optionally includes 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.

[00243] In Example 12, the subject matter of any one or more of

Examples 10-1 1 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.

[00244] In Example 13, the subject matter of Example undefined optionally includes where the TF further includes an indication of a bandwidth (BW) for the response, and where the processing circuitry is further configured to: determine the RU tone set based on the RU tone set index, the BW, and the response.

[00245] In Example 14, the subject matter of Example undefined optionally includes access point.

[00246] In Example 15, the subject matter of Example undefined optionally includes further including: 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.

[00247] Example 16 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 user information fields, where the user information fields indicate ranges of association identifications (AIDs), and where the TF further includes 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 based on the range of AIDs indicated by the user information fields; when the HE station is scheduled for an NDP feedback report response, determine a resource unit (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 fi eld, determine a RU tone set based on the RU tone set index and the response, and generate signaling to cause the HE station to transmit on the tones of the RU tone set. [00248] In Example 17, the subject matter of Example 16 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and where the instructions further configure the one or more processors to: determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

[00249] 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 user information fields, where the user information fields indicate ranges of association identifications (AIDs), and where the TF further includes 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 based on the range of AIDs indicated by the user information fields; when the HE station is scheduled for an NDP feedback report response, determining a resource unit (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, and generating signaling to cause the HE station to transmit on the tones of the RU tone set.

[00250] In Example 19, the subject matter of Example 18 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and where the method further includes: determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of ^'the user information fields.

[00251] 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 user information fields, where the user information fields indicate ranges of association identifications (AIDs), the TF indicating resource unit (RU) tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response; generate signaling to cause the HE access point to transmit the TF to the HE stations; and decode the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF,

[00252] In Example 21 , the subject matter of Example 20 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs.

[00253] In Example 22, the subject matter of any one or more of

Examples 20-21 optionally include where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field,

[00254] In Example 23, the subject matter of any one or more of

Examples 20-22 optionally include where the processing circuitry is further configured to: 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.

[00255] In Example 24, the subject matter of any one or more of

Examples 20-23 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.

[00256] Example 25 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) access point, 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 user information fields, where the user information fields indicate ranges of association identifications (AIDs), the TF indicating resource unit (RU) tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response; generate signaling to cause the HE access point to transmit the TF to the HE stations; and decode the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF. [00257] In Example 26, the subject matter of Example 25 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AEDs.

[00258] In Example 27, the subject matter of any one or more of

Examples 25-26 optionally include where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field,

[00259] In Example 28, the subject matter of any one or more of

Examples 25-27 optionally include where the instructions further configure the one or more processors to: 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.

[00260] Example 29 is a method performed by an apparatus of a high- efficiency (HE) access point, the method including: encoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including user information fields, where the user information fields indicate ranges of association identifications (AIDs), the TF indicating resource unit (RU) tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response; generating signaling to cause the HE access point to transmit the TF to the HE stations; and decoding the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF.

[00261] In Example 30, the subject matter of Example 29 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs.

[00262] In Example 31, the subject matter of any one or more of

Examples 29-30 optionally include where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field.

[00263] In Example 32, the subject matter of any one or more of

Examples 29-31 optionally include the method further including: 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, [00264] Example 33 is an apparatus of a high-efficiency (HE) access point, the apparatus including: means for encoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF including user information fields, where the user information fields indicate ranges of association identifications (AIDs), the TF indicating resource unit (RU) tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response; means for generating signaling to cause the HE access point to transmit the TF to the HE stations; and means for decoding the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF.

[00265] In Example 34, the subject matter of Example 33 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs.

[00266] In Example 35, the subject matter of any one or more of

Examples 33-34 optionally include where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field.

[00267] In Example 36, the subject matter of any one or more of

Examples 33-35 optionally include the apparatus further including: 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.

[00268] Example 37 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 user information fields, where the user information fields indicate ranges of association identifications (AIDs), and where the TF further includes 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 based on the range of AIDs indicated by the user information fields; when the HE station is scheduled for an NDP feedback report response, means for determining a resource unit (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, and means for generating signaling to cause the HE station to transmit on the tones of the RU tone set.

[00269] In Example 38, the subject matter of Example 37 optionally includes where the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and where the apparatus further includes: means for determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

[00270] In Example 39, the subject matter of Example 38 optionally includes where the user information fields further comprise a block access field, and where the apparatus further includes: means for determining the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields, and a value of the block access field for the one user information field indicates blocked.

[00271] In Example 40, the subject matter of any one or more of

Examples 38-39 optionally include where the user information fields further comprise a bit map field, and where the apparatus further including: means for determining the TF indicates the FIE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields and a corresponding bit of the bit map field for the one user information field indicates scheduled.

[00272] In Example 41, the subject matter of any one or more of

Examples 37-40 optionally include where the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further includes an AID step size field, and where the apparatus further includes: means for determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID step field times a value of the AID step size field for one of the user information fields. [00273] In Example 42, the subject matter of Example 41 optionally includes where the user information fields further comprise a block access field, and where the apparatus further includes: means for determining determine the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the AID step field times the value of the AID step size field, and a value of the block access field for the one user information field indicates blocked.

[00274] In Example 43, the subject matter of any one or more of

Examples 41 -42 optionally include where the user information fields further comprise a bit map field, and where the apparatus further includes: means for determining the TF indicates the HE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the AID step field times the value of the AID step size field, and a corresponding bit of the bit map field for the one user information field indicates scheduled.

[00275] In Example 44, the subject matter of any one or more of

Examples 37-43 optionally include where the user information fields comprise a starting AID field to indicate the ranges of AIDs, and the TF further includes an AID range size field, and where the apparatus further includes: means for determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field for one of the user information fields.

[00276] In Example 45, the subject matter of Example 44 optionally includes where the user information fields further comprise a block access field, and where the apparatus further includes: means for determining the TF indicates the HE station is not scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size fi eld, and a value of the block access field for the one user information field indicates blocked. [00277] In Example 46, the subject matter of Example 45 optionally includes where the user information fields further comprise a bit map field, and where the apparatus further includes: means for determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field, and a corresponding bit of the bit map fi eld for the one user information field indicates scheduled.

[00278] In Example 47, the subject matter of any one or more of

Examples 37-46 optionally include where the apparatus further includes: means for mapping tones of the RU tone set to a corresponding tone of a HE long- training field (HE-LTF) sequence, and where generate signaling further includes 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.

[00279] In Example 48, the subject matter of Example 47 optionally includes where the apparatus further includes: 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.

[00280] The Abstract is provided to comply with 37 C.F.R. Section

1.72(b) requiring an abstract that will allow the reader to ascertain the nature and gist of the technical disclosure. It is submitted with the understanding that it will not be used to limit or interpret the scope or m eaning of the claims. The following claims are hereby incorporated into the detailed description, with each claim standing on its own as a separate embodiment.

Claims

CLAIMS What is claimed is:

1 . An apparatus of a high-efficiency (HE) station, the apparatus comprising: memor'; 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 comprising user information fields, wherein the user information fields indicate ranges of association identifications (AIDs), and wherein the TF further comprises 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 based on the range of AIDs indicated by the user information fields;

when the HE station is scheduled for an NDP feedback report response, determine a resource unit (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, and

generate signaling to cause the HE station to transmit on the tones of the RU tone set.

2. The apparatus of claim 1, wherein the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of

AIDs, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

3. The apparatus of claim 2, wherein the user information fields further comprise a block access field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields, and a value of the block access field for the one user information field indicates blocked.

4. The apparatus of claim 2, wherein the user information fields further comprise a bit map field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID and the value of the ending AID for one of the user information fields and a corresponding bit of the bit map field for the one user information field indicates scheduled.

5. The apparatus of claim 1, wherein the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further compri ses an AID step size field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID step field times a value of the AID step size field for one of the user information fields.

6. The apparatus of claim 5, wherein the user information fields further comprise a block access field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is not scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the AID step field times the value of the AID step size field, and a value of the block access field for the one user information field indicates blocked,

7. The apparatus of claim 5, wherein the user information fields further comprise a bit map field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if the AID of the HE station is between the value of the starting AID field and the value of the value of the starting AID field plus the value of the AID step field times the value of the AID step size field, and a corresponding bit of the bit map fi eld for the one user information field indicates scheduled.

8. The apparatus of claim 1, wherein the user information fields comprise a starting AID field to indicate the ranges of AIDs, and the TF further comprises an AID range size field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field for one of the user information fields.

9. The apparatus of claim 8, wherein the user information fields further comprise a block access field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is not scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field, and a value of the block access fi eld for the one user information field indicates blocked.

10. The apparatus of claim 8, wherein the user information fields further comprise a bit map field, and wherein the processing circuitry is further configured to:

determine the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between the value of the starting AID field and a value of the value of the starting AID field plus a value of the AID range size field, and a corresponding bit of the bit map field for the one user information field indicates scheduled.

11. The apparatus of claim 1, wherein the processing circuitry is further configured to:

map tones of the RU tone set to a corresponding tone of a HE long- training field (HE-LTF) sequence, and

wherein generate signaling further comprises 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.

12. The apparatus of claim 11, wherein 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), wherein each tone of the RU tone set is part of a HE-LTF of the HE TB PPDU.

13. The apparatus of claim 11, wherein 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.

14. The apparatus of claim 1, wherein the TF further comprises an indication of a bandwidth (BW) for the response, and wherein the processing circuitry is further configured to:

determine the RU tone set based on the RU tone set index, the BW, and the response.

15. The apparatus of claim 1, wherein 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 1 ax access point, an IEEE 802.1 lax station, an IEEE 802.11 station, and an IEEE 802.11 access point.

16. The apparatus of claim 1, further comprising: transceiver circuitry coupled to the processing circuitry; and, one or more antennas coupled to the transceiver circuitry, wherein the memory is configured to store the NDP feedback report poll.

17. 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:

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, and

18. The non-transitory computer-readable storage medium of claim 17, wherein the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and wherein the instructions further configure the one or more processors to:

determine the TF indicates the FIE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

19. A method performed by an apparatus of a high-efficiency (HE) station, the method comprising:

decoding a trigger frame (TF) for a null data packet (NDP) feedback report poll, the TF comprising user information fields, wherein the user information fields indicate ranges of association identifications (AIDs), and wherein the TF further comprises 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 based on the range of AIDs indicated by the user information fields;

when the HE station is scheduled for an NDP feedback report response, determining a resource unit (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, and

generating signaling to cause the HE station to transmit on the tones of the RU tone set,

20. The method of claim 19, wherein the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs, and wherein the method further comprises: determining the TF indicates the HE station is scheduled for the NDP feedback report response if an AID of the HE station is between a value of the starting AID field and a value of the ending AID for one of the user information fields.

21. An apparatus of a high-efficiency (HE) access point, the apparatus comprising: 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 comprising user information fields, wherein the user information fields indicate ranges of association identifications (AIDs), the TF indicating resource unit (RU) tone sets for the HE stations indicated by the ranges of AIDs to transmit a NDP feedback report response;

generate signaling to cause the HE access point to transmit the TF to the HE stations; and

decode the NDP feedback report responses from the HE stations in accordance with RU tone sets indicated by the TF.

22. The apparatus of claim 21, wherein the user information fields comprise a starting AID field and an ending AID field to indicate the ranges of AIDs.

23. The apparatus of claim 21, wherein the user information fields comprise a starting AID field and an AID step field to indicate the ranges of AIDs, and the TF further comprises an AID step size field, and wherein the processing circuitry is further configured to:

24. The apparatus of claim 21, wherein the processing circuitry is further configured to:

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.

25. The apparatus of claim 21, further comprising: transceiver circuitry coupled to the processing circuitry; and, one or more antennas coupled to the transceiver circuitry, wherein the memory is configured to store the NDP feedback report poll.